Otyugh
Large aberration, neutral
Armor Class 14 (natural armor)
Hit Points 104 (11d10 + 44)
Speed 30 ft., swim 15 ft., climb 15 ft.
str
16 (+3)
dex
11 (+0)
con
19 (+4)
int
6 (-2)
wis
13 (+1)
cha
6 (-2)
Saving Throws Con +7
Senses darkvision 120 ft., passive Perception 11
Languages Otyugh; telepathy 120 ft. (doesn't allow the receiving creature to respond telepathically)
Challenge 5 (1,800 XP)
Actions
Bite. Melee Attack Roll: +6, reach 5 ft. 12 (2d8 + 3) Piercing damage, and the target has the Poisoned condition. Whenever the Poisoned target finishes a Long Rest, it is subjected to the following effect. Constitution Saving Throw: DC 15. Failure: The target's Hit Point maximum decreases by 5 (1d10) and doesn't return to normal until the Poisoned condition ends on the target. Success: The Poisoned condition ends.
Multiattack. The otyugh makes one Bite attack and two Tentacle attacks.
Tentacle. Melee Attack Roll: +6, reach 10 ft. 12 (2d8 + 3) Piercing damage. If the target is a Medium or smaller creature, it has the Grappled condition (escape DC 13) from one of two tentacles.
Tentacle Slam. Constitution Saving Throw: DC 14, each creature Grappled by the otyugh. Failure: 16 (3d8 + 3) Bludgeoning damage, and the target has the Stunned condition until the start of the otyugh's next turn. Success: Half damage only.