Large aberration, chaotic evil

Armor Class 16 (natural armor)

Hit Points 93 (11d10 + 33)

Speed 30 ft., swim 30 ft.

19 (+4) 10 (+0) 16 (+3) 5 (-3) 11 (+0) 5 (-3)

Skills Perception +4

Damage Immunities poison

Condition Immunities poisoned

Senses darkvision 60 ft., passive Perception 14

Languages understands Deep Speech but can’t speak

Challenge 4 (1,100 XP)

Amphibious: The chuul can breathe air and water.

Sense Magic: The chuul senses magic within 120 feet of it at will. This trait otherwise works like the detect magic spell but isn’t itself magical.


Multiattack: The chuul makes two pincer attacks. If the chuul is grappling a creature, the chuul can also use its tentacles once.

PincerMelee Weapon Attack: +6 to hit, reach 10 ft., one target. Hit: 11 (2d6 + 4) bludgeoning damage. The target is grappled (escape DC 14) if it is a Large or smaller creature and the chuul doesn’t have two other creatures grappled.

Tentacles: One creature grappled by the chuul must succeed on a DC 13 Constitution saving throw or be poisoned for 1 minute. Until this poison ends, the target is paralyzed. The target can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success.