Small Traps

When you choose this archetype at 3rd level you learn to create 2 small traps, detailed in the list at the end of this section. You can prepare up to 3 small traps when you complete a short or long rest by constructing them with bits and bobs you have on your person and any materials you can find nearby.

Small Traps can be deployed as an action on your turn or disarmed as a bonus action. When you disarm one of your traps, you can choose to automatically succeed on any checks associated with doing so.

Some traps can be deployed from a distance, which is noted in each trap's description. All small traps take up one 5-foot by 5-foot space.

You learn to create 1 additional small trap when you reach 9th, 13th, and 17th level. Each time you learn to create a new trap, you can replace one trap you know with a different one.

Large Traps

Large traps are those that require time to create, and cannot be prepared in advance. At 3rd level you learn to create 1 large trap. Each large trap requires some time to set up, and some can benefit from additional time as well.

You learn to create one additional large trap when you reach 9th level, and another at 17th level. Each time you learn to create a new trap, you can replace one trap you know with a different one.

Trapmaking Skills

Your skills grow as you do, and your traps grow more potent as well. Most of your traps deal damage equal to your sneak attack dice + your Intelligence modifier. For example, a trap set by a 5th level trapper with a +3 to Intelligence would deal 3d6 + 3 damage.

Additionally, most traps require your targets to make a saving throw to resist their effects. The saving throw DC is calculated as follows:

Adhesive Weight

This trap consists of an abnormally heavy metal plate, coated with a very sticky substance. Normally it would be carried in a container slick enough to resist sticking.

• Deployment. This heavy trap can be removed from its casing and thrown up to 10 feet away.
• Trigger. When the adhesive side of this plate comes into contact with anything, such as a foot, it sticks.
• Effect. Once this weight is stuck to the leg of a creature, its awkward weight and size reduce their movement speed by half. If the weight becomes stuck to a creature's arm, it hinders their movements and causes them to make attack rolls at disadvantage. To remove this weight, the creature must spend an action to make a Strength saving throw, removing it and ending its effects on a success. On a failure, the creature fumbles in its attempt to remove the sticky weight and falls prone.
• Countermeasures. Any form of alcohol dissolves the adhesive, rendering the trap essentially useless.

Blastbag

This thin bag is filled with a seemingly harmless liquid, however, when the right ingredient is added, it becomes a volatile concoction.

• Deployment. You add the catalyst ingredient and safely toss or slide the bag up to 20 feet before the components fully mix.
• Trigger. When the bag is impacted by a rapid force, such as that of being stepped on or hit by an arrow, the volatile mixture bursts into a ball of sticky burning liquid.
• Effect. A 5-foot sphere erupts in flaming liquid centered on the blastbag. Each creature within the sphere must make a Dexterity saving throw , taking fire damage equal to your Sneak Attack bonus + your Intelligence modifier on a failed save or half as much on a successful one. Creatures who fail this saving throw are covered in a sticky burning compound, and take an additional 1d4 fire damage at the beginning of their next turn.
• Countermeasures. On a successful Dexterity (Sleight of Hand) check versus your trap save DC, the bag can be disarmed by carefully opening it with a blade and allowing the fluid to drain slowly. On a failed check the bag explodes as if it were triggered normally.

Clamping Jaws

This tried and true trap is simply a spring-loaded set of jaws attached to a pressure plate

• Deployment. You lock the trap open and toss it up to 20 feet away.
• Trigger. When the pressure plate is stepped on or has any weight greater than 1 pound placed upon it, the trap snaps shut.
• Effect. If a medium or smaller creature's limb is caught in the trap, it receives piercing damage equal to your Sneak Attack bonus + your Intelligence modifier and has its speed reduced to 0. The creature can make a Strength saving throw at the beginning of each of its turns, breaking out of the trap and ending the effect on a success.
• Countermeasures. The trap can be triggered by any force other than a creature's limb in order to disable it. If this trap is disabled without capturing a creature, it can be collected and re-used.

Dazzle-Dust

This flat cylindrical plate is staggeringly simple in its operation. A shallow pan filled with powder and a primer in the center that, when activated, bursts the dust outward and burns it in a dazzlingly bright flash of light and sound.

• Deployment. A pin on the side can be pulled to arm the trap before it is thrown or slid across the floor up to 15 feet away.
• Trigger. When the plate is pressed down with more than 1 pound of force, the pin impacts the primer and tosses flashing dust outward.
• Effect. The dust burns and flashes a bright white, creating a loud crack that can be heard from up to 100 feet away. All creatures within a 30-foot sphere who can see or hear the blast at its center must make a Constitution saving throw, becoming blinded and deafened for up to 1 minute on a failed save. An affected creature can repeat this saving throw at the end of each of their turns, ending the effect on a success.
• Countermeasures. On a successful Dexterity (Sleight of Hand) check versus your trap save DC, the pressure plate can be carefully removed along with the primer, disarming the trap.

Frustrating Flight

This complex pressure plate trap is rigged to a large spring-like device. The large plate has a smaller pressure plate in its center, which acts as the trigger. When depressed it severs a rope that allows the spring to extend and launch the plate.

• Deployment. This trap takes 30 minutes to set up and consists of a plate that can be up to 15 feet by 15 feet large. When you set the trap, you can choose the distance and direction of the throw. The trap can throw large or smaller creatures up to a distance equal to half your rogue level x 5 feet.
• Trigger. The pressure plate is triggered when a force of more than 10 pounds acts upon it.
• Effect. The pressure plate clicks just before the spring takes effect and attempts to toss its targets. All targets on top of the plate must make a Dexterity saving throw, being launched its full distance and direction on a failed save.
• Countermeasures. On a successful Dexterity (Sleight of Hand) check versus your trap save DC, the pressure plate can be carefully removed and the trap can be prematurely triggered, disarming it. Additionally, any huge or bigger creature that would trigger this trap instead crushes it and renders it useless.

Projectile Trap

This simple tripwire is attached to the trigger or release of a crossbow, sling, or other launching device, bombarding intruding parties with projectiles.

• Deployment. The simplest form of this trap requires 15 minutes to set up, which includes the tripwire itself and the projectile launcher it triggers. The tripwire can be up to 15 feet long, and must be uninterrupted for its full length. With additional setup time, you can add extra projectile launchers to the trap. Each projectile launcher takes an additional 5 minutes to set up. You can have a maximum number of launchers equal to half your rogue level.
• Trigger. The tripwire is triggered when any force pulls it more than 1 inch in any direction.
• Effect. The tripwire pulls and activates the projectile launchers. Any creature adjacent to the tripwire must make a Dexterity saving throw or take bludgeoning damage equal to your sneak attack bonus + your Intelligence modifier + an additional 1d8 per extra launcher. The target takes no damage on a successful save.
• Countermeasures. If the tripwire is cut, the trap is rendered useless.

Pitfall Trap

A classic of trapmakers everywhere, sometimes a simple hole in the ground is all that's needed.

• Deployment. This trap must be deployed upon an already existing hole, or on ground that can be easily dug up. The hole can be up to 15 feet in diameter, and it takes two minutes to dig each foot of depth. To create the facade atop the hole takes an additional 10 minutes. The hole can be filled with any number of things such as spikes, water, or creatures, but the availability and speed of these options is up to the DM.
• Trigger. The facade atop the hole is meant to hold some weight to appear as solid ground from a distance. The trap activates when a force greater than 10 pounds is placed on top of the facade.
• Effect. The facade gives way dropping all creatures on top of the hole into it. All affected creatures must make a Dexterity saving throw, falling into the hole on a failed save, or catching themselves on the edge on a success.
• Countermeasures. While a hole cannot be 'disarmed', this trap is rendered useless if it is bridged or simply noticed and avoided.