Circle of the Deep

Most of the world is ocean, and the druids of the Circle of the Deeps are among the few air-breathers who are one with its mysteries: crushing pressure, unfathomable creatures, and relics of an ancient past. Even those that dwell primarily above the waves find that their connection to the lightless depths gives them gifts that are frightening and unfamiliar to surface-dwellers.

Some druids of aquatic races also belong to this Circle, often taking a more protective stance toward the Deeps. A third branch of this Circle hides in plain sight: those who have embraced malice against the sunlit lands. They threaten to bring the terrors of the deeps to all of the material plane.

Oceanborn

Starting at 2nd level, you have resistance to cold, you have a swimming speed equal to your walking speed, and you can breathe water. If you normally breathe water, you gain the ability to breathe air instead, and you gain a walking speed equal to your swimming speed. You can withstand pressure to a depth of 1000 ft per druid level.

When you use your Wild Shape feature, you can transform into the shape of a beast with a swimming speed. Starting at 8th level, you can choose the shape of a beast with a swimming speed and a challenge rating of up to 2. 

With noises and gestures you can communicate simple ideas with Small or smaller beasts that have a swimming speed. 

Crushing Pressure

At 2 level, you wield the crushing pressure of the depths. When you hit a creature with a spell attack or a creature fails a saving throw against a spell you cast, you can spend your bonus action to knock the target prone, and its speed is halved until the beginning of your next turn. You can use this feature a number of times equal to your Wisdom modifier (minimum 1), and you regain all expended uses when you finish a long rest.

Circle Spells

Your mystical connection to the land infuses you with the ability to cast certain spells. At 3rd, 5th, 7th, and 9th level you gain access to circle spells connected to the land where you became a druid. Choose that land — arctic, coast, desert, forest, grassland, mountain, swamp, or Underdark — and consult the associated list of spells.

Once you gain access to a circle spell, you always have it prepared, and it doesn’t count against the number of spells you can prepare each day. If you gain access to a spell that doesn’t appear on the druid spell list, the spell is nonetheless a druid spell for you.

Arctic

Druid Level	Spells
3rd	hold person, spike growth
5th	sleet storm, slow
7th	freedom of movement, ice storm
9th	commune with nature, cone of cold

Coast

Druid Level	Spells
3rd	mirror image, misty step
5th	water breathing, water walk
7th	control water, freedom of movement
9th	conjure elemental, scrying

Desert

Druid Level	Spells
3rd	blur, silence
5th	create food and water, protection from energy
7th	blight, hallucinatory terrain
9th	insect plague, wall of stone

Forest

Druid Level	Spells
3rd	barkskin, spider climb
5th	call lightning, plant growth
7th	divination, freedom of movement
9th	commune with nature, tree stride

Grassland

Druid Level	Spells
3rd	invisibility, pass without trace
5th	daylight, haste
7th	divination, freedom of movement
9th	dream, insect plague

Mountain

Druid Level	Spells
3rd	spider climb, spike growth
5th	lightning bolt, meld into stone
7th	stone shape, stoneskin
9th	passwall, wall of stone

Swamp

Druid Level	Spells
3rd	darkness, acid arrow
5th	water walk, stinking cloud
7th	freedom of movement, locate creature
9th	insect plague, scrying

Underdark

Druid Level	Spells
3rd	spider climb, web
5th	gaseous form, stinking cloud
7th	greater invisibility, stone shape
9th	cloudkill, insect plague

Pearl-Diving Charm

Beginning at 6 level, you can help other people venture into the depths. Creatures affected by a water breathing spell that you cast also gain resistance to cold damage, a swimming speed equal to their walking speed, and the ability to withstand pressure to a depth of 6,000 feet. Water breathing spells that you cast can’t be dispelled by anyone other than you, and you gain water breathing as an extra prepared spell.

Where Eyeless Things Dwell

Starting at 10th level, you gain blindsight out to a range of 60 feet.

Furthermore, you can communicate telepathically with any creature you can see within 120 feet. You don’t need to share a language with the creature for it to understand your telepathic messages, but the creature must be able to speak at least one language.

Davy Jones’s Locker

Beginning at 14 level, when you knock a creature prone with your Crushing Pressure feature, you can also force the target to roll a Constitution saving throw. The target suffers 5d10 cold damage and is restrained for 1 minute on a failed saving throw; on a success, it suffers half damage and is not restrained. At the end of each of its turns, the target can attempt a new saving throw; on a success, it is no longer restrained. You can use this part of this feature once, and regain the use of it when you finish a long rest.

Furthermore, you regain all expended uses of Crushing Pressure when you finish a short or long rest.