Endless Hunger. The abomination seeks to consume corpses of humanoids, beasts, monstrosities, and other undead to maintain its grotesque mass. For every 50 pounds of flesh or 20 pounds of bone the abomination consumes, it regains 9 (1d6+6) hit points.

Immutable Form. The abomination is immune to any spell or effect that would alter its form.

Multiattack. The golem makes two meat cleaver attacks and one meat hook attack.

Meat Cleaver. Melee Weapon Attack: +10 to hit, reach 5 ft., one target. Hit: 15 (2d8 + 6) slashing damage.

Meat Hook. Ranged Weapon Attack: +10 to hit, reach 30 ft., one target. Hit: 9 (1d6 + 6) piercing damage. If the target is a Large or smaller creature, it must succeed a grapple contest with the abomination. On a failure, the creature is grappled by the abomination's meat hook. If the meat hook currently has a creature grappled, the abomination instead uses its Reel In Prey action in place of this attack.

Reel In Prey. The abomination pulls on the chains of its meat hook, pulling a grappled creature that is Large or smaller up to 15 ft. towards it. If Large or smaller creature is grappled by the abomination within 5 ft., the abomination instead uses its Devour action instead of its Multiattack action.

Devour. Melee Weapon Attack: +10 to hit, reach 5 ft., one target. Hit: 15 (2d8 + 6) bludgeoning damage. If the target is a Large or smaller creature, it must succeed on a DC 20 Dexterity saving throw or be swallowed by the abomination. A swallowed creature is blinded and restrained, it has total cover against attacks and other effects outside the abomination, and it takes 16 (3d10) acid damage at the start of each of the abomination's turns.

If the abomination takes 20 damage or more on a single turn from a creature inside it, the abomination must succeed on a DC 21 Constitution saving throw at the end of that turn or regurgitate all swallowed creatures, which fall prone in a space within 10 feet of the abomination. If the abomination dies, a swallowed creature is no longer restrained by it and can escape from the corpse by using 10 feet of movement, exiting prone.