Muckbones

Large undead, unaligned

Armor Class 14 (natural armor)
Hit Points 68 (8d10+24)
Speed 5 ft., swim 5 ft.

STR	DEX	CON	INT	WIS	CHA
18 (+4)	15 (+2)	16 (+3)	10 (+0)	12 (+1)	5 (-3)

Skills Perception +3, Stealth +3
Senses passive Perception 13
Languages Common
Challenge 3 (700 XP)

Special Traits

• Undead Fortitude. If damage reduces Muckbones to 0 hit points, it must make a Constitution saving throw with a DC of 5 + the damage taken, unless the damage is radiant or from a critical hit. On a success, it drops to 1 hit point instead.
• Undead Nature. Muckbones doesn’t require air, food, drink, or sleep.

Actions

• Decaying Bite. Melee Weapon Attack: +6 to hit, reach 15 ft., one target. Hit: 14 (3d6+4) piercing damage plus 3 (1d6) necrotic damage. The target must succeed on a DC 12 Constitution saving throw or be cursed with perpetual decay. The cursed target can’t regain hit points until the curse is lifted by the remove curse spell or similar magic, or until it succeeds on a DC 12 Constitution saving throw at the end of a long rest.

About

The mostly skeletal remains of plesiosaurus lay just beneath the surface of the Black Pond’s shallows-having long ago lost its ability to swim, Muckbones has become practically embedded in the mud of the shallows.

It is brought victims on which to feed by the other members of the Wake of Maws in return for tracking the lunar cycle, climate, and which hunting grounds they’ve terrorized most recently.