Corpse Eel

Corpse eels are strange eels which call the Swamp of Illisium their home

Corpse Eel CR: 5

Medium abberation, neutral evil

Armor Class: 13

Hit Points: 104 (20d8 + 24)

Speed: 10 ft , swim: 40 ft

STR

16 +3

DEX

16 +3

CON

16 +3

INT

5 -3

WIS

16 +3

CHA

12 +1

Saving Throws: CON +6

Skills: Stealth +6

Damage Resistances: Bludgeoning, Piercing, and Slashing from Nonmagical Attacks

Damage Immunities: Necrotic

Condition Immunities: Grappled

Senses: Darkvision 120 ft., Passive Perception 13

Challenge Rating: 5

Corpse Shelter. The corpse eel can hide within a dead body within 5 feet of it. This body must be medium or larger. It makes a stealth check at advantage. Every round the corpse eel remains hidden it regains 1d6 hit points.
Rejuvenation. When the corpse eel hits with a bite attack, it regains 1d6 hit points at the end of its turn.

Actions

Multiattack. The corpse eel makes one bite attack and one constrict attack a turn.
Bite. Melee Weapon Attack: +5 to hit, reach 5ft., one creature. Hit: 6 (1d6+3) piercing damage. On a hit, rejuvenation is activated.
Constrict. Melee Weapon Attack: +5 to hit, reach 10 ft., one creature. Hit: 13 (3d6 + 3) bludgeoning damage. If the target is Medium or smaller, it is grappled (escape DC 13) and pulled 5 feet toward the corpse eel. Until this grapple ends, the target is restrained, the corpse eel tries to drown it, and the corpse eel can’t constrict another target.

Reactions

Inky Escape. When the corpse eel is below half health it releases an ink cloud. All creatures must make a Constitution saving throw DC 15 or be blinded for one round. It then can use its Corpse Shelter.

A corpse eel is a ten-foot-long eel with black slimy skin and pulsating red veins throughout its body. Four razor fangs line its mouth.