Sea Devil Swarm

Gargantuan swarm of Large fiends (devil), chaotic evil

Armor Class 11
Hit Points 120 (16d10 + 16)
Speed 10 ft., swim 60 ft.

STR	DEX	CON	INT	WIS	CHA
19 (+4)	13 (+1)	13 (+1)	8 (-1)	10 (+0)	4 (-3)

Skills Perception +3, Stealth +4
Senses darkvision 60 ft., passive Perception 13
Languages Aquan
Challenge 7 (2,900 XP)

SPECIAL TRAITS

• Hold Breath. While out of water, the sea devil can hold its breath for 1 hour.
• Underwater Camouflage. The sea devil has advantage on Dexterity (Stealth) checks made while underwater.
• Water Breathing. The sea devil can breathe only underwater.

ACTIONS

• Tentacles. Melee Weapon Attack: +7 to hit, reach 0 ft., one target in the swarm’s space. Hit: 13 (2d8 + 4) bludgeoning damage or 8 (1d8 + 4) bludgeoning damage if the swarm has half of its hit points or fewer. If the target is a creature, it is grappled (escape DC 15). Until this grapple ends, the target is restrained.
• Ink Cloud (Recharges after a Short or Long Rest). A 40-foot-radius cloud of ink extends all around the sea devil swarm if it is underwater. The area is heavily obscured for 1 minute, although a significant current can disperse the ink. After releasing the ink, the sea devil swarm can use the Dash action as a bonus action.
• Horrible Laughter (Recharge 6). The sea devil laughs horribly in a 90-foot radius. Each creature in that area that isn’t deafened must succeed on a DC 11 Wisdom saving throw or be frightened until the end of the sea devil’s next turn. While a creature is frightened in this way, its speed is halved, and it is incapacitated. A target that successfully saves is immune to the Horrible Laughter of all sea devils for the next 24 hours.

ABOUT

This creature looks like an octopus, only much larger and of a bright scarlet color, striped with black.

Sea devils are aptly named; they are not the smaller creatures that sometimes rise to the surface, go near the shore, or are caught by fisherman. The deep sea devils are monsters who inhabit caves in the rugged, mountainous regions of the ocean. They are evil spirits who delight in injuring all who meet them.

Ink Sacs. They carry big sacks in front of them, where they conceal the ink. Whenever they choose, the sea devils press out this ink, and it colors the water for a great space around them.

Devil’s Net. Sea devils can work together to create a net of sorts, interlacing their arms like the branches of trees in winter, when the leaves have fallen and left them bare.

They have an awful laugh, and they are fond of laughing hideously at those they have trapped.

The most dangerous of all sea devils is their prince, the largest and fiercest of his species. Fortunately sea devil princes are quite lazy, never moving from their position.

Their people bring him food to and take his commands.