Engineer

A gnome sits hunched over a workbench in a room cluttered with every sort of tool, carefully screwing a gear into place amidst a complex maze of clockwork. The device begins to tick and she and watches with a smile of pride as the automaton straightens and stands.

A troll growls in hunger as it looms over a dwarf, who slides a long, brass tube from across his back. With a thundering boom, a gout of fire and shrapnel erupts from the tube, and the troll's growls turn into shrieks of panic as it turns to flee.

With a thunderous crash a figure lands in the middle of the battlefield. As the smoke clears, a towering presence stands amidst the war-torn scene, clad in mechanical plate mail with smoke billowing from a chimney on the back. The glowing visor swivels to inspect the wreckage. It raises a gauntlet, and lightning crackles forth.

Makers of mechanical objects and devices, engineers are defined by their inventive nature. Where a wizard studies magic, they turn to science to unlcok the mysteries of the universe thorough study and investigation.

Every engineer is defined by a specific craft. Engineers see mastering the basic methods of a craft as the first step to true progress, the invention of new methods and approaches. Engineers are students of invention and warfare who craft deadly firearms, ingenious gadgets, steam-powered armour, and mechanical beings that they can augment with additional mechanisms.

All engineers are united by their curious and inventive nature. To an engineer, science is an evolving art with a leading edge of discovery and mastery that pushes further ahead with each passing year. Engineers value novelty and discovery. This penchant pushes them to seek a life of adventure.

Class Features

As an engineer, you gain the following class features.

Expertise

At 2rd level, choose two of your skill or tool proficiencies. Your proficiency bonus is doubled for any ability check you make that uses either of the chosen proficiencies.

At 10th level, you can choose another two skill or tool proficiencies to gain this benefit.

Tinker

At 2nd level, you gain the ability to temporarily enhance a weapon or suit of armour. At the end of a long rest, you can tinker with one weapon or suit of armour. Until the end of your next long rest, or until you die, the object grants a +1 bonus to AC if it's a suit of armour or a +1 bonus to attack and damage rolls if it's a weapon.

Once you've used this feature, you can’t use it again until you finish a long rest.

Engineering Discipline

Starting at 3rd level, you begin to focus on a specific engineering discipline, which is detailed at the end of the class description. Your discipline grants you features at 3rd level and again at 6th, 14th, and 18th level.

Ability Score Improvement

When you reach 4th level, and again at 8th, 12th, 16th, and 19th level, you can increase one ability score of your choice by 2, or you can increase two ability scores of your choice by 1. As normal, you can’t increase an ability score above 20 using this feature. You can forgo taking this feature to take a feat of your choice instead.

Breakthrough

At 11th level, you make a major breakthrough in your experiments. Choose one 6th-level invention. You can use this invention once before it requires maintenance. At higher levels, you gain more inventions of your choice that can be used in this way: one 7th level invention at 13th level, one 8th level invention at 15th level, and one 9th-level invention at 17th level. Each of your breakthrough inventions must undergo maintenance before it can be used again.

Master Crafter

At 20th level, your mastery of engineering is unrivaled. Your Constitution and Intelligence scores increase by 2. Your maximum for those scores increases by 2.

Additionally, when you roll initiative and have no uses of Potent Aptitude left, you regain one use.

Engineering Disciplines

Armourer

Those engineers who choose the Armourer Engineering discipline focus on the ability to work with hard metals and steam power to construct and enhance powered armour.

Bonus Proficiencies

When you choose this discipline at 3rd level, you gain proficiency in leatherworker's tools, heavy armour and shields. Additionally, when you craft armour, the rate at which you craft doubles.

Powered Armour

Also at 3rd level, you learn to upgrade one non-magical suit of armor, utilising your armourer knowledge. Over the course of a long rest, you can expend materials equal to half the cost of the armour in order to transform it into a personalised suit of steam-powered armour. You must have the armour, materials, and both smith's and tinker's tools in order to do this.

The armour weighs an additional 15 lbs, but the armour's total weight does not contribute to your encumbrance. While wearing your powered armour your Strength score is 14 (this has no effect if your Strength score is already 14 or higher). If you are submerged, the steam engine is extinguished and you lose these benefits and suffer disadvantage on athletics checks. If the liquid is flammable, the steam engine explodes, dealing 1d6 fire damage per engineer level. Only you are considered proficient in your powered armour.

Furthermore, over the course of a long rest, you can expend materials equal to half the base value of the armour in order to install additional upgrades. You must have the armour, materials, and both smith's and tinker's tools in order to perform these upgrades. Your powered armour has 1 upgrade slot, and it gains more at higher levels, as shown in the Upgrades column of the engineer class table. Over the course of a long rest, you can replace or remove a number of upgrades up to your Intelligence modifier (minimum of one). Some upgrade effects require saving throws. When you use such an effect from this class, use your invention save DC.

Damage Absorption

Lastly at 3rd level, when you take damage, you can use your reaction and expend one use of your Potent Aptitude to absorb some of that damage. When you do so, the damage you take from the attack is reduced by the amount rolled on the die + your Intelligence modifier (minimum of one).

Mounted Weapon

Beginning at 6th level, when you take the Attack action, you can make one weapon attack as a bonus action.

You can use this feature a number of times equal to your Intelligence modifier (a minimum of once). You regain all expended uses when the armour undergoes maintenance.

Mounted Invention

At 14th level, when you use your action to activate an invention, you can use your Mounted Weapon feature.

Suit Reliability

Starting at 18th level, your suit is like a second skin. Whenever you make an ability check or saving throw that uses Strength, Dexterity, or Constitution, you can treat a d20 roll of 9 or lower as a 10. You must be wearing your steam-powered armour to gain this benefit.

Armour Upgrades

If an upgrade has prerequisites, you must meet them to install it. You can install the upgrade at the same time that you meet its prerequisites.

Reactive Servos

You upgrade your powered armour to better respond to incoming damage. As a bonus action you can activate this ability and gain temporary hit points equal to 1d4 + Intelligence modifier. These hit points last for one hour.

You can use this feature a number of times equal to your Intelligence modifier (a minimum of once). You regain any expended uses when your armour undergoes maintenance.

Resistance

You tune your powered armour against certain forms of damage. Choose acid, cold, fire, lightning, or thunder damage. While wearing your powered armour you have resistance to that type of damage.

You can select this upgrade multiple times. Each time you do so, you must choose a different damage type.

Rocket Boots

You integrate rocket propelled boots into your powered armour. These rockets have 2 uses. As an action, your automaton can use the rocket boots invention, consuming 1 use.

You can choose this upgrade twice. The rockets regain all uses after the armour undergoes maintenance.

Sealed Suit

Prerequisite: 5th level
As a bonus action you can hermetically seal your powered armour, giving you an air supply for up to 1 hour and making you immune to poison (but not curing you of existing poisoned conditions). Your armour regains 1 minute of air for every minute that you are in a breathable environment and the armour is not sealed.

Additionally, while you are wearing your powered armour you are considered adapted to cold and hot climates as well as high altitude, as described in chapter 5 of the Dungeon Master’s Guide.

Shock-Absorbing Underlay

Prerequisite: 5th level
You gain a +1 bonus to physical saving throws. This bonus increases to +2 at 11th level and +3 at 17th level.

Steam Blast

You upgrade your steam engine to emit a wave of steam and hot air. As an action you can force each Large or smaller creature within 5 feet of you to make a Dexterity or Strength saving throw (their choice) against your Invention save DC. On a failed save, they are pushed back 5 feet and knocked prone.

You can use this feature a number of times equal to your Intelligence modifier (a minimum of once). You regain any expended uses when the armour undergoes maintenance.

Weapon Integration

You can integrate a single weapon, which may not have the two-handed property, into your armour. You have advantage on Strength saving throws to avoid being disarmed.

Automaton Engineering

Those engineers who choose the Automaton Engineering discipline focus on crafting and upgrading a mechanical companion.

Automaton Upgrades

If an upgrade has prerequisites, you must meet them to install it. You can install the upgrade at the same time that you meet its prerequisites.

Heavy Plating

Bludgeoning, piercing and slashing damage that your automaton takes from non-magical weapons is reduced by an amount equal to its proficiency bonus.

Invention Protocol

You install two gadgets and one invention on your automaton. Once your automaton uses the invention, your automaton must undergo maintenance before it can use it again.

Jumper Rockets

You install a rockets in your automaton's legs. These rockets have 2 uses. As an action, your automaton can use the rocket boots invention, consuming 1 use.

You can choose this upgrade twice. The rockets regain all uses after the automaton undergoes maintenance.

Light Plating

Your automaton’s speed increases by 5 feet while light armour is integrated.

Medium Plating

The maximum Dexterity bonus that your automaton can add to AC increases to 3 from 2 while medium armour is integrated.

Observant Protocol

Prerequisite: 7th level, Alarm Protocol
You modify the alarm module in your automaton, granting the following benefits:

• If your automaton can see a creature’s mouth while it is speaking a language it understands, your automaton can interpret what it’s saying by reading its lips.
• Your automaton has a +5 bonus to its passive Wisdom (Perception) and passive Intelligence (Investigation) scores.

Proficiency Protocol

You upgrade your automaton, granting it proficiency in a tool or skill. Your automaton gains proficiency in a tool or skill of your choice.

Prototype Steam Engine

You further improve the steam engine of your automaton. Its Hit Die becomes a d10.

Repair Module

Prerequisite: 11th level, Durability Module
Your automaton becomes proficient in a saving throw of your choice. Additionally, whenever your automaton takes the Dodge action in combat, it can spend one Hit Die to heal itself. Roll the die, add its Constitution modifier, and it regains a number of hp equal to the total (minimum of one).

Shockwave

You install defensive countermeasures on the underbelly of your automaton. This upgrade has 2 uses. As an action, your automaton can use the overload invention, consuming 1 use per level. The saving throw is made against your invention save DC.

You can choose this upgrade twice. The countermeasures regain all uses after the automaton undergoes maintenance.

System Redundancy

Prerequisite: 7th level
You install an emergency protocol in your automaton, prompting a quick reboot after critical damage is taken. If your automaton would be reduced to 0 hit points, it instead is reduced to 1.

Once your automaton uses this feature, it must undergo maintenance before it can use it again.

Taser

You install a taser in your automaton. The taser has 2 uses. As an action, your automaton can use the paralyse person invention, consuming 1 use. The saving throw is made against your invention save DC.

You can choose this upgrade twice. The taser regains all uses after the automaton undergoes maintenance.

Weaponsmith Engineering

Those engineers who choose the Weaponsmith Engineeering discipline focus on the skill of constructing and modifying weapons.

Assisted Aim

At 14th level, when you use an invention that allows you to force creatures in an area to make a saving throw, you can instead make an attack roll with your prototype weapon against a single target that would be in the range of the power. On a hit, the target suffers the effects as though they failed their saving throw. If the invention would affect more than one creature, it instead affects only one.

You can use this feature a number of times equal to your Intelligence modifier (a minimum of once). You regain any expended uses when the weapon undergoes maintenance.

Weaponsmith's Salvo

Starting at 18th level, when you use your Assisted Aim feature, and the invention would affect more than one creature, you can instead attack each affected creature that would be in the range of the invention. Make a separate attack roll for each target. On a hit, each target suffers the effects as though they failed their saving throw.

Weaponsmith Upgrades

If an upgrade has prerequisites, you must meet them to install it. You can install the upgrade at the same time that you meet its prerequisites.

Keen Edge

Prerequisite: 11th level, Jagged Edge
Your weapon now scores a critical hit on a roll of 19 or 20.

Lantern

You affix a targeted light to your weapon. As a bonus action, you can toggle the light on or off. While on, your weapon sheds bright light in a 60-foot cone.

Muffled Weapon

You modify your prototype weapon with a muffling system. When you make a weapon attack with your weapon while hidden, Investigation and Perception checks made to locate you that rely on sound have disadvantage.

Optical Scope

Prerequisite: 5th level, Ranged Weapon
You gain a +1 bonus to attack rolls made with this weapon. This bonus increases to +2 at 11th level and +3 at 17th level.

Reduced Recoil

Prerequisite: Ranged Weapon
You install a recoil dampener in your prototype weapon, removing the strength property from it.

Returning Weapon

Prerequisite: Melee Weapon
You install a retractable chain in your prototype weapon. If the weapon does not already have the thrown property, it gains it with a range of 20/60. Additionally, when you throw the weapon, it immediately returns to your hand.

Siege Weapon

You modify your weapon to be more effective against barriers. Your weapon deals double damage against structures.

Shock Absorber

You add mechanical suspension to your prototype weapon to absorb energy from impacts. While wielding your prototype weapon, you can use the absorb energy invention and the invention's extra damage applies to both melee and ranged weapon attacks.

Harpoon Gadget

Prerequisite: 9th level, Harpoon Reel
After hitting a creature with the harpoon fire mode, you can use the connection to deliver a gadget effect. As a bonus action, you can use a gadget on the target as if you were standing in the target's space. If the gadget requires a saving throw, the target has disadvantage.

Once you've used this feature, you can’t use it again until you recover the harpoon.

Shocking Strike

Prerequisite: 9th level, Melee Weapon
When you hit with the weapon, you can create an electric burst. Each creature in a 15-foot cone centered on the creature you hit must make a Dexterity saving throw against your invention save DC, taking 1d8 lightning damage on a failed save or half as much on a successful one.

Once you've used this feature, the weapon must undergo maintenance before you can use it again.

Snap Fire

Prerequisite: 9th level, Ranged Weapon
You modify your prototype weapon for quick shots. You can use your reaction to take a opportunity attack with your prototype weapon if an enemy comes within 10 ft of you. You have disadvantage on this attack.

Staggering Strike

Prerequisite: Melee Weapon
When you hit with the weapon, you can force the target to make a Strength saving throw. On a failed save, the creature is pushed back 10 feet and knocked prone.

Once you've used this feature, the weapon must undergo maintenance before you can use it again.

Venomous Weapon

Prerequisite: 7th level, Melee Weapon
As a bonus action, you can coat your weapon in a thin layer of poison for 1 minute. The next time you hit with the weapon, the creature must make a Constitution saving throw against your invention DC. On a failed save, a creature takes 1d10 poison damage and becomes poisoned for 1 minute.

Once you've used this feature, the weapon must undergo maintenance before you can use it again.

Inventions

Firearm

• Activation Time: 1 Action
• Range: 120 feet
• Duration: Instantaneous

You shoot a blast of fire at a creature or object within range. Make a ranged invention attack against the target. On a hit, the target takes 1d10 fire damage. A flammable object hit by this invention ignites if it isn't being worn or carried.

This invention's damage increases by 1d10 when you reach 5th level (2d10), 11th level (3d10), and 17th level (4d10).

Grappling Cable

• Activation Time: 1 Action
• Range: 30 feet
• Duration: Instantaneous

You create a long, barbed wire cable that lashes out at your command toward a creature in range. Make a melee invention attack against the target. If the attack hits, the creature takes 1d6 piercing damage, and if the creature is Large or smaller, you pull the creature up to 10 feet closer to you.

The invention's damage increases by 1d6 when you reach 5th level (2d6), 11th level (3d6), and 17th level (4d6).

Icy Burst

• Activation Time: 1 Action
• Range: 60 feet
• Duration: Instantaneous

You emit a burst of ice at a creature within range. Make a ranged invention attack against the target. On a hit, it takes 1d8 cold damage, and its speed is reduced by 10 feet until the start of your next turn.

The invention’s damage increases by 1d8 when you reach 5th level (2d8), 11th level (3d8), and 17th level (4d8).

Jet of Flame

• Activation Time: 1 Action
• Range: Self (30-foot sphere)
• Duration: 10 Minutes

A flickering flame appears in your hand. The flame remains there for the duration and harms neither you nor your equipment. The flame sheds bright light in a 10-foot radius and dim light for an additional 10 feet. The effect ends if you dismiss it as an action or if you activate it again.

You can also attack with the flame, although doing so ends the effect. When you use this invention, or as an action on a later turn, you can hurl the flame at a creature within 30 feet of you. Make a ranged invention attack. On a hit, the target takes 1d8 fire damage.

This invention’s damage increases by 1d8 when you reach 5th level (2d8), 11th level (3d8), and 17th level (4d8).

Light

• Activation Time: 1 Action
• Range: Touch
• Duration: 1 Hour

You activate a gadget that is no larger than 10 feet in any dimension. Until the effect ends, the invention sheds bright light in a 20-foot radius and dim light for an additional 20 feet. The light can be colored as you like. Completely covering the object with something opaque blocks the light. The effect ends if you use the invention again or dismiss it as an action.

Mending

• Activation Time: 1 Minute
• Range: Touch
• Duration: Instantaneous

This ability repairs a single break or tear in an object you touch, such as broken chain link, two halves of a broken key, a torn strap, or a leaking cup. As long as the break or tear is no larger than 1 foot in any dimension, you mend it, leaving no trace of the former damage.

Poison Spray

• Activation Time: 1 Action
• Range: 10 Feet
• Duration: Instantaneous

You extend your hand toward a creature you can see within range and project a puff of noxious gas. The creature must succeed on a Constitution saving throw or take 1d12 poison damage.

This invention’s damage increases by 1d12 when you reach 5th level (2d12), 11th level (3d12), and 17th level (4d12).

Rime Shot

• Activation Time: 1 Action
• Range: Varies
• Duration: 1 Round

As part of the action used to activate this invention, you must make a ranged attack with a weapon against one creature within your weapon’s range, otherwise the invention fails. On a hit, the target suffers the attack’s normal effects, and the creature’s movement speed is halved until the end of its turn as the air around it turns frigid.

This invention deals additional damage when you reach higher levels. At 5th level the ranged attack deals an extra 1d6 cold damage. This damage increases by 1d6 again at 11th level and 17th level.

Rime Strike

• Activation Time: 1 Action
• Range: Varies
• Duration: 1 Round

As part of the action used to activate this invention, you must make a melee attack with a weapon against one creature within your weapon’s reach, otherwise the invention fails. On a hit, the target suffers the attack’s normal effects, and its speed is reduced by 10 feet until the start of your next turn, as the cold energy seeps into its being. Additionally, if the target doesn't move at least 5 feet before the start of your next turn, it immediately takes 1d8 cold damage, and the effect ends.

This invention’s damage increases when you reach higher levels. At 5th level, the melee attack deals an extra 1d8 cold damage to the target, and the damage the target takes for not moving increases to 2d8. Both damage rolls increase by 1d8 at 11th level and 17th level.

Shocking Blast

• Activation Time: 1 Action
• Range: 30 feet
• Duration: Instantaneous

You create a blast of lightning. Choose one creature within range, or choose two creatures within range that are within 5 feet of each other. A target must succeed on a Dexterity saving throw or take 1d6 lightning damage. Constructs have disadvantage on this saving throw.

This invention’s damage increases by 1d6 when you reach 5th level (2d6), 11th level (3d6), and 17th level (4d6).

Shocking Burst

• Activation Time: 1 Action
• Range: Self (5-foot sphere)
• Duration: Instantaneous

You emit a burst of electricity. Each creature within range, other than you, must succeed on a Constitution saving throw or take 1d6 lightning damage.

This invention’s damage increases by 1d6 when you reach 5th level (2d6), 11th level (3d6), and 17th level (4d6).

Shocking Strike

• Activation Time: 1 Action
• Range: Varies
• Duration: 1 Round

As part of the action used to activate this invention, you must make a melee attack with a weapon against one creature within your weapon’s reach, otherwise the invention fails. On a hit, the target suffers the attack’s normal effects, and it becomes wreathed in an electrical discharge. If the target willingly takes a reaction before the start of your next turn, it immediately takes 1d8 lightning damage, and the power ends.

This invention’s damage increases when you reach higher levels. At 5th level, the melee attack deals an extra 1d8 lightning damage to the target, and the damage the target takes for taking reactions increases to 2d8. Both damage rolls increase by 1d8 at 11th level and 17th level.

Slingshot

• Activation Time: 1 Bonus Action
• Range: Touch
• Duration: 1 Minute

You gather pebbles for your slingshot. You can make a ranged invention attack with one of the pebbles. It has a range of 60 feet. On a hit, the target takes bludgeoning damage equal to 1d6 + your invention ability modifier.

Sonic Shot

• Activation Time: 1 Action
• Range: Varies
• Duration: 1 Round

As part of the action used to activate this invention, you must make a ranged attack with a weapon against one creature within your weapon’s range, otherwise the invention fails. On a hit, the target suffers the attack’s normal effects, and it becomes wreathed in a sonic barrier until the start of your next turn. If the target willingly moves before then, it immediately takes thunder damage equal to your invention ability modifier, becomes deafened until the start of your next turn, and the effect ends.

This invention’s damage increases when you reach higher levels. At 5th level, the ranged attack deals an extra 1d6 thunder damage to the target, and the damage the target takes for moving increases to 1d6 + your invention ability modifier. Both damage rolls increase by an additional 1d6 at 11th and 17th level.

Sonic Strike

• Activation Time: 1 Action
• Range: Varies
• Duration: 1 Round

As part of the action used to activate this invention, you must make a melee attack with a weapon against one creature within your weapon’s reach, otherwise the invention fails. On a hit, the target suffers the attack’s normal effects, and you begin to emanate a disturbing hum. If a hostile creature ends its turn within 5 feet of you before the start of your next turn, it takes 1d4 thunder damage.

This invention’s damage increases when you reach higher levels. At 5th level, the melee attack deals an extra 1d8 thunder damage to the target, and the secondary damage increases by 1d4. Both damage rolls increase by 1d8 and 1d4, respectively, at 11th level and 17th level.

Sonic Wave

• Activation Time: 1 Action
• Range: 5 Feet
• Duration: 1 Instantaneous

You create a burst of thunderous sound that can be heard up to 100 feet away. Each creature within range, other than you, must succeed on a Constitution saving throw or take 1d6 thunder damage.

The invention’s damage increases by 1d6 when you reach 5th level (2d6), 11th level (3d6), and 17th level (4d6).

Storm Shot

• Activation Time: 1 Action
• Range: Varies
• Duration: 1 Round

As a part of the action used to activate this invention, you must make a ranged attack with a weapon against one creature within your weapon’s range, otherwise the invention fails. On a hit, the target suffers the attack’s normal effects and gains the lightning rod debuff until the end of your next turn, as energy begins to course through them. When this power hits a target, if there is a creature within 30 feet who has the lightning rod debuff, then the energy discharges, creating an arc of lightning between them which removes the debuff and deals 1d6 lightning damage to each of them.

The invention’s damage increases when you reach higher levels. At 5th level, the effects of both the ranged weapon attack and discharge deal an extra 1d6 lightning damage. Both damage rolls increase by an additional 1d6 at 11th and 17th level.

Level 1

Expeditious Retreat

• Activation Time: 1 Bonus Action
• Range: Self
• Duration: 10 Minutes

This invention gives you a burst of adrenaline that allows you to move at an incredible pace. When you use this invention, and then as a bonus action on each of your turns until the effect ends, you can take the Dash action.

Flame Sweep

• Activation Time: 1 Action
• Range: Self (15-foot cone)
• Duration: Instantaneous

A thin sheet of flames shoots forth from you. Each creature in a 15-foot cone must make a Dexterity saving throw. A creature takes 3d6 fire damage on a failed save, or half as much damage on a successful one. The fire ignites any flammable objects in the area not worn or carried.

When you use an invention of 2nd level or higher, the damage increases by 1d6 for each invention level above 1st.

Flash

• Activation Time: 1 Action
• Range: Self
• Duration: 1 Round

You create a massive flash of light at a point within range. Roll 6d10; the total is how many hit points of creatures this invention can affect. Creatures in a 15-foot cone originating from you are affected in ascending order of their current hit points (ignoring unconscious creatures and creatures that can't see). Starting with the creature that has the lowest current hit points, each creature affected by this invention is blinded until the end of your next turn. Subtract each creature's hit points from the total before moving on to the creature with the next lowest hit points. A creature's hit points must be equal to or less than the remaining total for that creature to be affected.

When you use an invention of 2nd level or higher, roll an additional 2d10 for each invention level above 1st.

Gleaming Outline

• Activation Time: 1 Action
• Range: 60 Feet
• Duration: 1 Minute

Each object in a 20-foot cube within range is outlined in blue, green, or violet light (your choice). Any creature in the area when the invention is activated is also outlined in light if it fails a Dexterity saving throw. For the duration, objects and affected creatures shed dim light in a 10-foot radius.

Any attack roll against an affected creature or object has advantage if the attacker can see it, and the affected creature or object can’t benefit from being invisible.

Heavy Cannon

• Activation Time: 1 Action
• Range: 120 Feet
• Duration: Instantaneous

Make a ranged invention attack against the target. On a hit, the target takes 2d8 fire damage + 1d6 bludgeoning damage. If you roll the same number on both d8s, the blast engulfs the nearest creature, which may not be further than 30 feet from the original target. If two creatures are equally near, you choose which is the new target. Make a new attack roll against the new target, and make a new damage roll, which could cause the blast to engulf yet another creature, which also may not be further than 30 feet from the original target. A creature can only be targeted once by each use.

When you use an invention of 2nd level or higher, each target takes 1d6 extra fire damage for each slot level above 1st.

Icy Blast

• Activation Time: 1 Action
• Range: 60 Feet
• Duration: Instantaneous

You release a shard of icy energy at one creature within range. Make a ranged invention attack against the target. On a hit, the target takes 1d10 piercing damage. Hit or miss, the shard then explodes. The target and each creature within 5 feet of it must succeed on a Dexterity saving throw or take 2d6 cold damage.

When you use an invention of 2nd level or higher, the cold damage increases by 1d6 for each invention level above 1st.

Knockout Gas

• Activation Time: 1 Action
• Range: 90 Feet
• Duration: 1 Minute

This invention sends creatures into a deep slumber. Roll 5d8; the total is how many hit points of creatures this invention can affect. Creatures within 20 feet of a point you choose within range are affected in ascending order of their current hit points (ignoring unconscious creatures).

Starting with the creature that has the lowest current hit points, each creature affected by this invention falls unconscious until the effect ends, the sleeper takes damage, or someone uses an action to shake or slap the sleeper awake. Subtract each creature's hit points from the total before moving on to the creature with the next lowest hit points. A creature's hit points must be equal to or less than the remaining total for that creature to be affected. Undead and creatures immune to being charmed aren't affected by this invention.

When you use an invention of 2nd level or higher, roll an additional 2d8 for each invention level above 1st.

Laughing Gas

• Activation Time: 1 Action
• Range: 30 Feet
• Duration: 1 Minute

A creature of your choice that you can see within range perceives everything as hilariously funny and falls into fits of laughter if this invention affects it. The target must succeed on a Wisdom saving throw or fall prone, becoming incapacitated and unable to stand up for the duration. A creature with an Intelligence score of 4 or less isn't affected. At the end of each of its turns, and each time it takes damage, the target can make another Wisdom saving throw. The target has advantage on the saving throw if it's triggered by damage. On a success, the effect ends.

Light Cannon

• Activation Time: 1 Action
• Range: 90 Feet
• Duration: Instantaneous

You hurl a 4-inch-diameter cannonball at a creature that you can see within range. Make a ranged invention attack against the target. If the attack hits, the creature takes 2d8 bludgeoning damage and 1d8 fire damage.

When you use an invention of 2nd level or higher, the fire damage increases by 1d8 for each invention level above 1st.

Net Launcher

• Activation Time: 1 Action
• Range: 90 Feet
• Duration: 1 Minute

A net covers a 20-foot square starting from a point within range. For the duration, this area is difficult terrain. A creature in the area when you use the invention must succeed on a Strength saving throw or be restrained until the effect ends. A creature restrained by the net can use its action to make a Strength check against your invention save DC. On a success, it frees itself.

Noxious Fumes

• Activation Time: 1 Action
• Range: 5 Feet
• Duration: Instantaneous

You emit a cloud of poisonous fumes. Each creature within range, other than you, must make a Constitution saving throw. On a failed save, a creature takes 2d8 poison damage and is poisoned. On a successful save, the creature takes half as much damage and isn't poisoned.

When you use an invention of 2nd level or higher, the damage increases by 1d8 for each invention level above 1st.

Oil Slick

• Activation Time: 1 Action
• Range: 60 Feet
• Duration: 1 Minute

You cover the ground in a 10-foot square within range in oil. For the duration, it is difficult terrain.

When the oil appears, each creature standing in its area must succeed on a Dexterity saving throw or fall prone. A creature that enters the area or ends its turn there must also succeed on a Dexterity saving throw.

The oil is flammable. Any 5 foot square of the oil exposed to fire burns away in one round. Each creature who enters the fire or starts it turn there must make a Dexterity saving throw, taking 3d6 fire damage on a failed save, or half as much on a successful one. The fire ignites any flammable objects in the area that aren’t being worn or carried.

Overload

• Activation Time: 1 Action
• Range: Self (15-foot cube)
• Duration: Instantaneous

You expel a burst of power. Each creature in a 15-foot cube originating from you must make a Dexterity saving throw. On a failed save, a creature takes 2d8 lightning damage and is pushed 10 feet away from you. On a successful save, the creature takes half as much damage and isn’t pushed.

When you use an invention of 2nd level or higher, the damage increases by 1d8 for each invention level above 1st.

Parachute

• Activation Time: 1 Reaction, which you take when you fall.
• Range: Self
• Duration: 1 Minute

Your rate of descent slows to 60 feet per round until the invention ends. If the you land before the invention ends, you take no falling damage and can land on your feet, and the effect ends.

Repair Construct

• Activation Time: 1 Action
• Range: Touch
• Duration: Instantaneous

A construct you touch regains a number of hit points equal to 1d8 + your invention ability modifier.

When you use an invention of 2nd level or higher, the healing increases by 1d8 for each invention level above 1st.

Ring of Fire

• Activation Time: 1 Action
• Range: Self
• Duration: 1 Minute

A wall of flames erupts out of the ground in a ring around you with a radius of 15 feet and a height of 10 feet. Creatures who start their turn in the ring of fire or pass through it on their turn take 1d6 fire damage. Creatures within the ring of fire who willingly try to move through the fire to escape must succeed on a Wisdom saving throw to do so. Creatures who are immune to fear or fire automatically succeed on this saving throw.

When you use an invention of 2nd level or higher, the damage of the ring of fire increases by 1d6 for each invention level above 1st.

Rocket Boots

• Activation Time: 1 Action
• Range: Touch
• Duration: 1 Minute

You touch a creature. The creature's jump distance is tripled until the effect ends.

Rocket Pod

• Activation Time: 1 Action
• Range: 120 Feet
• Duration: Instantaneous

You expel a series of three small explosives. Each explosive hits a creature of your choice that you can see within range. An explosive deals 1d4 + 1 fire damage to its target. The explosives all strike simultaneously, and you can direct them to hit one creature or several.

When you use an invention of 2nd level or higher, the invention contains one more explosive for each invention level above 1st.

Scatter Shot

• Activation Time: 1 Bonus Action
• Range: Self
• Duration: 1 Minute

The next time you hit a creature with a ranged weapon attack before the effect ends, this invention creates a burst of many smaller projectiles. In addition to the normal effect of the attack, the target of the attack and each creature within 5 feet of it must make a Dexterity saving throw. A creature takes 1d10 piercing damage on a failed save, or half as much damage on a successful one.

If you use an invention of 2nd level or higher, the damage increases by 1d10 for each invention level above 1st.

Smoke Bomb

• Activation Time: 1 Action
• Range: 120 Feet
• Duration: 1 Hour

You cause thick smoke to erupt from a point within range, filling a 20-foot-radius sphere. The sphere spreads around corners, and its area is heavily obscured. It lasts for the duration or until a wind of moderate or greater speed (at least 10 miles per hour) disperses it.

When you use an invention of 2nd level or higher, the radius of the smoke cloud increases by 20 feet for each invention level above 1st.

Snap Shot

• Activation Time: 1 Reaction that you take in response to being damaged by a creature within 60 feet of you that you can see.
• Range: 60 Feet
• Duration: Instantaneous

You expel a sabotage charge at the creature that attacked you. The creature must make a Dexterity saving throw. It takes 2d10 fire damage on a failed save, or half as much damage on a successful one.

When you use an invention of 2nd level or higher, the damage increases by 1d10 for each invention level above 1st.

Snare

• Activation Time: 1 Minute
• Range: Touch
• Duration: 8 Hours

As you activate this invention, you use a rope to create a circle with a 5-foot radius on the ground or the floor. When you finish, the circle becomes a trap. This trap is nearly invisible, requiring a successful Intelligence (Investigation) check against your invention save DC to be discerned. The trap triggers when a Small, Medium, or Large creature moves onto the ground or the floor in the invention’s radius. That creature must succeed on a Dexterity saving throw or be hoisted into the air, leaving it hanging upside down 3 feet above the ground or the floor. The creature is restrained there until the effect ends. A restrained creature can make a Dexterity saving throw at the end of each of its turns, ending the effect on itself on a success. Alternatively, the creature or someone else who can reach it can use an action to make an Intelligence (Investigation) check against your invention save DC. On a success, the restrained effect ends. After the trap is triggered, the invention ends when no creature is restrained by it.

Spring Stilts

• Activation Time: 1 Action
• Range: Touch
• Duration: 1 Hour

You touch a creature. The target's speed increases by 10 feet until the effect ends.

Level 2

Lock

• Activation Time: 1 Action
• Range: Touch
• Duration: Until Removed

You touch a closed door, window, gate, chest, or other entryway, and it becomes locked for the duration. You and the creatures you designate when you use this invention can open the object normally with a key you give them. Otherwise, it is impassable until it is broken or the invention is removed. Casting knock on the object suppresses lock for 10 minutes.

While affected by this power, the object is more difficult to break or force open; the DC to break it or pick any previously existing lock increases by 10.

Magnetic Field

• Activation Time: 1 Action
• Range: Self
• Duration: 1 Hour

You create a strong magnetic field around you in a 10-foot radius which moves with you, remaining centered on you. The field lasts for the invention’s duration and has the following effects:

Pyrotechnics

• Activation Time: 1 Action
• Range: 60 Feet
• Duration: Instantaneous

Choose an area of flame that you can see and that fits within a 5-foot cube within range. You can extinguish the fire in that area, and create either fireworks or smoke when you do so.

Fireworks. The target explodes with a dazzling display of colors. Each creature within 10 feet of the target must succeed on a Constitution saving throw or become blinded until the end of your next turn.

Smoke. Thick black smoke spreads out from the target in a 20-foot radius, moving around corners. The area of the smoke is heavily obscured. The smoke persists for 1 minute or until a strong wind disperses it.

Repeater

• Activation Time: 1 Bonus Action
• Range: Touch
• Duration: 1 Minute

You attach a repeater magazine to your weapon. For the duration, when you make a ranged attack with the weapon, it consumes no ammunition, and as a bonus action on each of your turns you can make one attack with the weapon loaded with the repeater. When this effect ends, the magazine is expended.

When you use an invention of 5th level, you can make two attacks with your bonus action, instead of one.

Shatter

• Activation Time: 1 Action
• Range: 60 Feet
• Duration: Instantaneous

A sudden loud ringing noise, painfully intense, erupts from a point of your choice within range. Each creature in a 10-foot-radius sphere centered on that point must make a Constitution saving throw. A creature takes 3d8 thunder damage on a failed save, or half as much damage on a successful one. A creature made of inorganic material such as stone, crystal, or metal has disadvantage on this saving throw.

A non-magical object that isn’t being worn or carried also takes the damage if it’s in the power’s area.

When you use an invention of 3rd level or higher, the damage increases by 1d8 for each slot level above 2nd.

Level 3

Freeze Ray

• Activation Time: 1 Action
• Range: 30 Feet
• Duration: 1 Minute

Choose up to six creatures of your choice in a 40-foot cube within range. Each target must succeed on a Dexterity saving throw or be affected by this invention for the duration.

An affected target’s speed is halved, it takes a -2 penalty to AC and Dexterity saving throws, and it can’t use reactions. On its turn, it can use either an action or a bonus action, not both. Regardless of the creature’s abilities or items, it can’t make more than one melee or ranged attack during its turn.

If the creature attempts to cast a spell with a casting time of 1 action, roll a d20. On an 11 or higher, the spell doesn’t take effect until the creature’s next turn, and the creature must use its action on that turn to complete the spell. If it can’t, the spell is wasted.

A creature affected by this invention makes another Dexterity saving throw at the end of its turn. On a successful save, the effect ends for it.

Landmine

• Activation Time: 1 Action
• Range: 150 Feet
• Duration: Instantaneous

Choose a point you can see on the ground within range. A fountain of churned earth and stone erupts in a 20-foot cube centered on that point. Each creature in that area must make a Dexterity saving throw. A creature takes 3d12 bludgeoning damage on a failed save, or half as much damage on a successful one. Additionally, the ground in that area becomes difficult terrain until cleared. Each 5-foot-square portion of the area requires at least 1 minute to clear by hand.

When you use an invention of 4th level or higher, the damage increases by 1d12 for each invention level above 3rd.

Protection from Energy

• Activation Time: 1 Action
• Range: Touch
• Duration: 1 Hour

A willing creature you touch has resistance to one damage type of your choice: acid, cold, fire, lightning, or thunder.

Mortar

• Activation Time: 1 Action
• Range: 120 Feet
• Duration: Instantaneous

You create an explosion at a point within range. Each creature in a 20-foot-radius sphere centered on that point must make a Dexterity saving throw. A target takes 8d6 fire damage on a failed save, or half as much damage on a successful one. The fire spreads around corners. It ignites unattended flammable objects in the area.

When you use an invention of 4th level or higher, the damage increases by 1d6 for each invention level above 3rd.

Sabotage Charges

• Activation Time: 1 Action
• Range: Self
• Duration: 10 Minutes

You create six sabotage charges that last for the invention’s duration. When you use the invention, and as a bonus action on subsequent turns, you can hurl up to two of the charges to points you choose within 120 feet. Each charge explodes if it reaches the point or hits a solid surface. Each creature within 5 feet of the explosion must make a Dexterity save. The explosion deals 2d6 fire damage on a failure, or half damage on a success.

The number of charges created increases by two for each invention level above 3rd.

Scuba Gear

• Activation Time: 1 Action
• Range: Touch
• Duration: 24 Hours

This invention grants up to ten willing creatures you can see within range the ability to breathe underwater until the effect ends. Affected creatures also retain their normal mode of respiration.

Stimulant

• Activation Time: 1 Action
• Range: Touch
• Duration: 1 Minute

Choose a willing creature that you can see within range. Until the effect ends, the target’s speed is doubled, it gains a +2 bonus to AC, it has advantage on Dexterity saving throws, and it gains an additional action on each of its turns. That action can be used only to take the Attack (one weapon attack only), Dash, Disengage, Hide, or Use an Object action. When the effect ends, the target can’t move or take actions until after its next turn, as a wave of lethargy sweeps over it.

Trap

• Activation Time: 1 Hour
• Range: Touch
• Duration: Until disabled or triggered

When you use this invention, you create a trap that will later trigger in response to a certain condition. You must attach it either to a surface (such as a table or a section of floor or wall) or within an object that can be closed or turned on (such as a book, door, or computer terminal) to conceal the trap. The trap can cover an area no larger than 10 feet in diameter. At the GM’s discretion, certain actions may cause the trap to break or be rendered inoperative. The trap is well disguised, and requires a successful Intelligence (Investigation) check against your invention save DC to be found. You decide what triggers the trap when you use the invention, such as entering a certain area or taking an object. You can further refine the trigger so the trap activates only under certain circumstances or according to physical characteristics (such as height or weight) or creature kind. You can also set conditions that don't trigger the trap.

When you create the trap, choose a trap type:

Explosive Trap. When triggered, the trap erupts in a 20-foot-radius sphere centered on the trap. The explosion spreads around corners. Each creature in the area must make a Dexterity saving throw. A creature takes 5d8 acid, cold, fire, lightning, or sonic damage on a failed saving throw (your choice when you create the trap), or half as much damage on a successful one.

Invention Trap. You can store a prepared invention of 3rd level or lower in the trap by using it as part of creating the trap. The trap must target a single creature or an area. The invention being stored has no immediate effect when used in this way. When the trap is triggered, the stored invention is used. If the trap has a target, it targets the creature that triggered the trap. If the invention affects an area, the area is centered on that creature.

When you use an invention of 4th level or higher, the damage of an explosive trap increases by 1d8 for each invention level above 3rd. If you create an invention trap, you can store any invention of up to the same level as the trap level.

Upgrade Weapon

• Activation Time: 1 Action
• Range: Touch
• Duration: 1 Hour

A non-magical weapon you touch becomes an upgraded weapon. Choose one of these damage types: acid, cold, fire, or lightning. For the duration, a non-magical weapon you touch has a +1 to attack rolls and deals an extra 1d4 damage of the chosen type.

When you use an invention of 5th level, the bonus to attack rolls increases to +2 and the extra damage increases to 2d4.

Alpha Radiation

• Activation Time: 1 Action
• Range: 120 Feet
• Duration: 10 Minutes

Dim, greenish light spreads within a 30-foot-radius sphere centered on a point you choose within range. The light spreads around corners, and it lasts until the effect ends. When a creature moves into the invention’s area for the first time on a turn or starts its turn there, that creature must succeed on a Constitution saving throw or take 4d10 radiant damage, and it suffers one level of exhaustion and emits a dim, greenish light in a 5-foot radius. This light makes it impossible for the creature to benefit from being invisible. The light and any levels of exhaustion caused by this invention go away when the effect ends.

Ballistic Armour

• Activation Time: 1 Action
• Range: Touch
• Duration: 1 Hour

Until the effect ends, the target has resistance to nonmagical bludgeoning, piercing, and slashing damage.

Corrosive Sphere

• Activation Time: 1 Action
• Range: 150 Feet
• Duration: Instantaneous

You create a globule of acid and hurl it at a point within range, where it explodes in a 20-foot-radius sphere. Each creature in that area must make a Dexterity saving throw. On a failed save, a creature takes 10d4 acid damage and another 5d4 acid damage at the end of its next turn. On a successful save, a creature takes half the initial damage and no damage at the end of its next turn.

When you use an invention of 5th level, the initial damage increases by 2d4.

Curtain of Napalm

• Activation Time: 1 Action
• Range: 120 Feet
• Duration: 1 Minute

You create a wall of fire on a solid surface within range. You can make the wall up to 60 feet long, 20 feet high, and 1 foot thick, or a ringed wall up to 20 feet in diameter, 20 feet high, and 1 foot thick. The wall is opaque and lasts for the duration. When the wall appears, each creature within its area must make a Dexterity saving throw. On a failed save, a creature takes 5d8 fire damage, or half as much damage on a successful save. One side of the wall, selected by you when you cast this spell, deals 5d8 fire damage to each creature that ends its turn within 10 feet of that side or inside the wall. A creature takes the same damage when it enters the wall for the first time on a turn or ends its turn there. The other side of the wall deals no damage.

When you use an invention of 5th level, the damage increases by 1d8.

Elemental Accelerant

• Activation Time: 1 Action
• Range: 90 Feet
• Duration: 1 Minute

Choose one creature you can see and one damage type: acid, cold, fire, lightning, or thunder. The target must make a Constitution saving throw. If it fails, the first time on each turn when it takes damage of the chosen type, it takes an extra 2d6 damage of it. The target also loses resistance to the type until the power ends.

When you use an invention of 5th level, you can target one additional creature. The creatures must be within 30 feet of each other when you target them.

Fabricate

• Activation Time: 10 Minutes
• Range: Touch
• Duration: Instantaneous

You convert raw materials into products of the same material. For example, you can fabricate a wooden bridge from a clump of trees, a rope from a patch of hemp, and clothes from flax or wool. Choose raw materials that you can see within range. You can fabricate a Large or smaller object (contained within a 10-foot cube, or eight connected 5-foot cubes), given a sufficient quantity of raw material. If you are working with metal, stone, or another mineral substance, however, the fabricated object can be no larger than Medium (contained within a single 5-foot cube). The quality of objects made by the invention is commensurate with the quality of the raw materials. Creatures or magic items can't be created or transmuted by this invention. You also can't use it to create items that ordinarily require a high degree of craftsmanship, such as jewelry, weapons, glass, or armor, unless you have proficiency with the appropriate type of artisan's tools.

Ice Storm

• Activation Time: 1 Action
• Range: 120 Feet
• Duration: Instantaneous

A storm of cold encompasses the ground in a 20-foot-radius, 40-foot-high cylinder centered on a point within range. Each creature in the cylinder must make a Dexterity saving throw. A creature takes 2d8 bludgeoning damage and 4d6 cold damage on a failed save, or half as much damage on a successful one. The storm’s area of effect becomes difficult terrain until the end of your next turn.

When you use an invention of 5th level, the bludgeoning damage increases by 1d8.

Sickening Radiation

• Activation Time: 1 Action
• Range: 60 Feet
• Duration: Instantaneous

You launch three projectiles at points you can see within range. Each creature within a 10-foot radius sphere of each point must make a Dexterity saving throw. A creature takes 3d6 fire and 3d6 bludgeoning damage on a failed save, or half as much damage on a successful one. A creature in the area of more than one sphere is affected only once. The power damages objects in the area and ignites flammable objects that aren’t being worn or carried.

Level 5

Volley

• Activation Time: 1 Action
• Range: 150 Feet
• Duration: Instantaneous

You fire a piece of ammunition from a ranged weapon or throw a weapon into the air and choose a point within range. Hundreds of duplicates of the ammunition or weapon fall in a volley from above and then disappear. Each creature in a 40-foot-radius. 20-foot-high cylinder centered on that point must make a Dexterity saving throw. A creature takes 8d8 damage on a failed save, or half as much damage on a successful one. The damage type is the same as that of the ammunition or weapon.

Level 6

UV Beam

• Activation Time: 1 Action
• Range: Self
• Duration: 1 Minute

You produce a beam of brilliant light in a 5-foot-wide, 60-foot-long line. Each creature in the line must make a Constitution saving throw. On a failed save, a creature takes 6d8 radiant damage and is blinded until your next turn. On a successful save, it takes half as much damage and isn't blinded by this invention. Undead and oozes have disadvantage on this saving throw. You can create a new line of radiance as your action on any turn until the effect ends. You are surrounded by bright light in a 30-foot radius and dim light for an additional 30 feet. This light is sunlight.

Level 7

Level 8

Stun

• Activation Time: 1 Action
• Range: 60 Feet
• Duration: Instantaneous

You emit a tiny crippling dart at a target within range. If the target has 150 hit points or fewer, it is stunned. Otherwise, the invention has no effect. The stunned target must make a Constitution saving throw at the end of each of its turns. On a successful save, this stunning effect ends.

Weather Machine

• Activation Time: 10 Minutes
• Range: Self
• Duration: 8 Hours

You take control of the weather within 5 miles of you for the duration. You must be outdoors to use this invention. Moving to a place where you don’t have a clear path to the sky ends the effect early. When you use the invention, you change the current weather conditions, which are determined by the DM based on the climate and season. You can change precipitation, temperature, and wind. It takes 1d4 × 10 minutes for the new conditions to take effect. Once they do so, you can change the conditions again. When the effect ends, the weather gradually returns to normal. When you change the weather conditions, find a current condition and change its stage by one, up or down. When changing the wind, you can change its direction.

UV Flash

• Activation Time: 1 Action
• Range: 150 Feet
• Duration: Instantaneous

Brilliant sunlight flashes in a 60-foot radius centered on a point you choose within range. Each creature in that light must make a Constitution saving throw. On a failed save, a creature takes 12d6 radiant damage and is blinded for 1 minute. On a successful save, it takes half as much damage and isn't blinded by this invention. Undead and oozes have disadvantage on this saving throw.

A creature blinded by this invention makes another Constitution saving throw at the end of each of its turns. On a successful save, it is no longer blinded.

This invention dispels any darkness in its area that was created by a spell.

Level 9