%%
```statblock
monster: Chuul
```
%%
*Large aberration, chaotic evil*
**Armor Class** 16 (natural armor)
**Hit Points** 93 (11d10+33)
**Speed** 30 ft., swim 30 ft.
| STR | DEX | CON | INT | WIS | CHA |
|---------|---------|---------|--------|---------|--------|
| 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.
***Pincer***. *Melee 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.