Atlantean Magic

  Deep underneath the waves, where the light of the sun is filtered from the deep sea, Triton, Sea Elves, and other waterborne lineages gather together to protect the overworld from the deep sea monstrosities, aberrations, and elementals that seek to wreak havoc and destruction upon the material plane. After generations of fighting these creatures and protecting themselves, these deep sea protectors have developed a special kind of magic to be used deep within the waves, inspired by the deep sea creatures that they fight alongside with.

How to Learn Atlantean Magic

  Atlantean spells are inherently more powerful spells than most. Due to their innate ability of becoming empowered underwater and in the sea, Atlantean spells are made with the intention that they have the possibility of becoming more powerful than traditional spells given to characters. Because of this, Atlantean spells cannot be chosen normally and can only be taught from those who know Atlantean magic, or found via scroll or spellbook. Although it is possible for a divine or primordial entity to bless a spellcaster with the knowledge of one such Atlantean spell, the traditional way to learn these Atlantean spells would be through an Atlantean NPC or scroll/spellbook.

If a character wants to learn a Atlantean spell from an NPC, the character must take the downtime activity ‘Training’ as mentioned in Xanathar’s Guide to Everything Downtime Revisited, spending 50gp per week as opposed to 25. The character must have a friendly contact or favor with someone who knows a Atlantean spell of at least 3rd level. At the end of the Training, the character may then add one Atlantean spell that the contact knows to their list of Spells Known, provided it is of spell level that the character can cast.

Furthermore, if a character wishes to learn a Atlantean spell of 5th level or higher, the time spent in training is doubled, and the price per keep in costs of arcane supplies is 200gp per week.

Prepared vs Known Casters

  When it comes to Atlantean spells, if a character learns a Atlantean spell it is either, added to their spellbook as normal if they are a wizard, it is added to their number of spells known if they are a Bard, Sorcerer, Ranger, or Warlock, and if they are a Artificer, Druid, or Cleric; it is added to their spell list and is automatically prepared without counting against the number of prepared spells that the caster can prepare.

Submerged in Seawater

  As you begin to read through these Atlantean Magic spells, you may notice that many of which contain an addendum that states, ‘When submerged in seawater.’ Since Atlantean spells were created to be used in oceanic environments, they are heightened when casted underwater, and as such, gain additional effects when the caster is fully submerged in Seawater, or when thet target of the spell is fully submerged in Seawater. If the effect of the spell has a duration that is longer than instantaneous, if the caster is no longer submerged in seawater during the duration of the spell, any amplified effects end as they are no longer being bolstered by the sea.

Bioluminescence

Evocation cantrip

• Casting Time: 1 action
• Range: 15 feet
• Components: V, S, M (Bioluminescence)
• Duration: 1 minute

You create a shower of magical bioluminescence in a 10 foot cube within range. This bioluminescence gives off 30 feet of dim light. Alternatively, you can coat an object no larger than 5 feet on one side that is neither worn nor carried, or a willing medium or smaller creature with bioluminescence; where they give off 30 feet of dim light. This light is usually a light cyan blue, but you can determine the color of the light.

If you cast this spell while submerged in seawater, the duration increases to 1 hour.

Classes: Bard, Cleric, Druid, Sorcerer, Warlock, Wizard

Coral Wreath

1st-level conjuration

• Casting Time: 1 action
• Range: Self
• Components: S, M (A coral polyp)
• Duration: 1 minute

You wave your hand and cause growths of spiny, protective coral or wreath your body. For the duration you gain 2d6 temporary hit points, and while you have these temporary hit points, any creature you are grappling or any creature who is grappling you takes 1d8 piercing damage at the start of each of your turns.

If you cast this spell while submerged in seawater, the seawater magically accelerates this growth and the casting time of the spell is a bonus action and you gain 2d8 temporary hit points as opposed to 2d6.

At higher levels: When you cast this spell using a spell slot of 2nd level or higher, you gain 1d6 (1d8 while submerged) more temporary hit points per spell level above 1st.

Classes: Druid, Ranger, Sorcerer, Wizard

Upwell

1st-level evocation

• Casting Time: 1 action
• Range: 30 feet
• Components: S, M (A drop of water)
• Duration: Instantaneous

You cause a sudden surge of water that launches a target within range up to 30 feet up in the air. If the target is an unwilling creature, they must succeed on a Strength saving throw, taking 2d6 bludgeoning damage upon failure in addition to being launched 30 feet in the air, and suffering no ill effects upon success.

If you cast this spell while submerged in seawater, you can push the target up to 60 feet in any direction; where you can control if it twists, turns, circles, or moves straight as the spell becomes a momentary magical current.

At higher levels: When you cast this spell using a spell slot of 2nd level or higher, the target is propelled an additional 10 feet in the air per spell level above 1st.

Classes: Bard, Druid, Ranger, Sorcerer, Wizard

Mass Boil

2nd-level transmutation

• Casting Time: 1 action
• Range: 120 feet
• Components: V, S, M (A drop of water)
• Duration: Instantaneous

You cause all water in a 30 foot cube centered at a point within range to instantly boil and evaporate. Each creature within this area must succeed on a Constitution saving throw or take 7d6 fire damage, halved on success. Additionally, the accompanying steam lightly obscures the cube until the start of your next turn.

At higher levels: When you cast this spell using a spell slot of 3rd level or higher, the damage increases by 1d6 and the cube's radius increases by 5 feet per spell level above 2nd.

Classes: Artificer, Bard, Druid, Sorcerer

Ink Blast

2nd-level evocation

• Casting Time: 1 action
• Range: Self (30 foot cone)
• Components: V, S, M (An octopus tentacle or a vial of ink)
• Duration: Instantaneous

You extend your hands outwards and cause a blast of thick, blackened ink to erupt from your palms in a 30 foot cone. Each creature caught within this area must succeed on a Dexterity saving throw or be Blinded for 1 minute. A creature can use their Action to wipe the ink from their eyes, ending the effect early.

If the area you cast this spell in is submerged in seawater, the thick ink lingers in the 30 foot cone and heavily obscures the area for 1 minute or until the water is displaced with a moderate or strong current.

Classes: Artificer, Bard, Druid, Sorcerer, Warlock, Wizard

Aqueous Form

3rd-level transmutation

• Casting Time: 1 action (ritual)
• Range: Touch
• Components: V, S, M (A drop of water)
• Duration: Concentration, up to 1 hour

When you begin casting this spell, the target must be submerged in water for the entirety of the casting time, otherwise the spell fails.

For the duration, the target takes on a watery form. The target and their equipment becomes aqueous and translucent, as if made by water. While in this aqueous form they cannot take any actions, they have a swimming speed equal to twice their walking speed or swimming speed, they can breathe underwater, they have resistance to acid, bludgeoning, piercing, and slashing damage, and if they are not moving, they have advantage on Dexterity (Stealth) checks made to remain hidden and creatures have disadvantage on Wisdom (Perception) checks made to spot them.

At higher levels: When you cast this spell using a spell slot of 4th level or higher, you can target one additional creature per spell level above 3rd provided each creature is submerged in water and within 20 feet of each other.

Classes: Druid, Sorcerer, Warlock

Utaeli’s Shockwave Punch

3rd-level evocation

• Casting Time: 1 action
• Range: 10 feet
• Components: S
• Duration: Instantaneous

As you pull your fish back in the casting of this spell, you imbue your fist with intense magical energy and strike with such force it creates a momentary shockwave, akin to the strike of a mantis shrimp. You make a melee spell attack against a creature you can see within range, dealing 6d8 bludgeoning on hit. If you hit the target, they must also succeed on a Constitution saving throw or be stunned until the end of your next turn.

If you cast this spell while submerged in seawater, the range of this spell is tripled.

At higher levels: When you cast this spell using a spell slot of 4th level or higher, you deal an additional 1d8 bludgeoning damage per spell level above 3rd.

Classes: Artificer, Druid, Ranger, Sorcerer, Warlock, Wizard

Angler's Charm

4th-level enchantment

• Casting Time: 1 action
• Range: Self (60 foot radius)
• Components: S, M (A shard of glowstone or an angler fish’s stalk)
• Duration: Concentration, up to 1 minute

You hold your hand up and cause a warm but brilliant light to shine from your palm, which provides 60 feet of dim light. Each creature that can see you and this light within 60 feet of you must succeed on a Wisdom saving throw or become Charmed for the duration.

While Charmed in this way, they must use their action on each of their turns to take the Dash action to move to a space within 5 feet of you. If they are already within 5 feet of you, they must use their action to sit down, and do nothing else. While a creature is charmed in this way, all attack rolls against them have advantage, and a creature remakes their initial saving throw every time they take damage, or at the end of each of their turns, ending this effect upon success.

Classes: Bard, Druid, Sorcerer, Warlock

Spectral Urchin

6th-level conjuration

• Casting Time: 1 action
• Range: 30 feet
• Components: V, S, M (A sea cucumber trapped in blue resin)
• Duration: 1 hour

You cause a 5 foot radius growth of spectral urchins to sprout on a surface within range. Any creature that moves into this space for the first time on a turn or starts their turn within it must succeed on a Constitution saving throw or take 3d6 piercing damage and become poisoned for 1 minute, only taking half damage on success. While Poisoned in this way, their speed is halved, they take 1d8 poison damage at the start of each of their turns, and at the end of each of their turns they can remake the initial saving throw, ending this effect upon success.

If the area you are casting this spell in is submerged in seawater, it magically accelerates the growth of these urchins and becomes a 10 foot radius growth instead.

Classes: Druid, Ranger, Sorcerer, Wizard

Drown

5th-level evocation

• Casting Time: 1 action
• Range: 60 feet
• Components: V, S, M (A vial of seawater which the spell consumes)
• Duration: Concentration, up to 1 minute

Choose a creature within range. If the creature can breathe underwater, does not breathe at all, or is an undead or construct, the spell fails. Otherwise the creature must succeed on a Constitution saving or have their lungs magically fill with seawater and begin drowning.

For the duration, the target is suffocating and cannot speak nor cast spells that require a vocal component as they gurgle endless seawater. At the end of each of their turns, they can make a Constitution saving throw. Upon two successes, which do not need to be consecutive, the spell ends.

At higher levels: When you cast this spell using a spell slot of 6th level or higher, you can target one additional creature within range provided each affected creature is within 30 feet of each other per spell level above 5th.

Classes: Druid, Warlock

Utaeli’s Glaucus Wings

5th-level transmutation

• Casting Time: 1 action
• Range: Self
• Components: V, S, M (A glass glaucus worth 200gp)
• Duration: Concentration, up to 1 hour

You sprout a pair of venomous and finned blue and white wings akin to that of a Glaucus. While you have these wings you gain a flying speed of 60 feet and a swimming speed of 100 feet, and as an action, you can make a melee spell attack with the wings against a target you can see within 10 feet of you, dealing 1d4 piercing damage and 2d6 poison damage on hit.

If you cast this spell while submerged in seawater, the spell does not require concentration.

Classes: Druid, Ranger, Sorcerer, Warlock

Changelog

• Version 1.4
  • Echolocate changed to bonus action
  • Added art
• Version 1.3
  • Removed concentration from Undertow
  • Drown can now be saved against in subsequent turns
  • Coral Wreath casted in seawater now ups the temporary hit points gained
  • Water Wave’s range reduced to 20 feet
  • Water Wave casted underwater no longer doubles its range and instead adds 5 feet to the range and width of the wave
  • Coral Shard now fires 2 shards to start, and 2 additional shards as a bonus action
  • Spectral Anemone’s radius reduced to 10 feet
• Version 1.2
  • Added Pressurized Bubble Blast, Bioluminescence, Bloodsense, Weight of the Depths, Echolocate, Utaeli’s Serrated Chomp, Regeneration of the Starfish, Utaeil’s Glaucus Wings, Wrath of Zhragthonu, and Utaeli’s Eels
• Version 1.1
  • Upwell distance traveled increased as well as having its distance doubled while submerged in seawater
  • Mass Boil damage increased
  • Roaring Ring now grants disadvantage on saving throws against targets submerged in seawater
  • Increased radius for Undertow and now grants disadvantage on creatures who are submerged in seawater
  • Added the spells Water Wave, Coral Shard, Rampant Coral Growth, Spectral Anemone, Ink Blast, Angler’s Charm, Mantis Shrimp Punch, Sea Spine, Spectral Urchin, Spectral Jellyfish, Utaeli’s Crab Claw, Lobster’s Flight, Dive of the Barracuda, and Utaeli’s Crab Carapace
• Version 1.0
  • Initial release

More!

  This homebrew was made by KoatheDM, and you can find more homebrew content on Patreon! I also have an Instagram account, Reddit account where I post and tease other homebrew content by the name of KoatheDM, and a Twitter where I also tease upcoming content! This document was made through GMBinder. Art generated by wombo.art and art made by Grandfailure and Warmtail.