Monstrous Appearance. Creatures that start its turn within 30 ft. of the Abomination, have to succeed on a DC 15 Wisdom saving throw or be frightened by the abomination for 1 minute. Frightened creatures can repeat the save at the end of each of their turns. If they succeed on the save they are immune by this ability for 24 hours.

Grasping Arms. The Abominations body is covered in arms. These arms reach out towards anything they can hold onto, including other creatures. Creatures that hit the abomination with a melee weapon attack, have to make a DC 17 Strength Save or lose the Weapon they were using.

Additionally when they end their turn within 5 ft of the Abomination have to succeed on a DC 17 Strength Save or be grappled.

Regeneration. The Abomination regains 10 hit points at the start of its turn. If the Abomination takes acid or fire damage, this trait doesn't function at the start of the Abomination's next turn. The Abomination dies only if it starts its turn with 0 hit points and doesn't regenerate.

Multi attack. The Abomination makes two Slam attacks. It can replace one of those attacks with a bite attack.

Slam. Melee Weapon Attack: +12 to hit, reach 10 ft., one target. Hit: 28 (4d10 + 7) bludgeoning damage and be grappled. While grappled(DC 17) this way the target is also restrained.

Bite. Melee Weapon Attack: +12 to hit, reach 5 ft., one target. Hit: 28 (4d12 + 7) piercing damage, and the target is swallowed if it is a Medium or smaller creature. A swallowed creature is blinded and restrained, has total cover against attacks and other effects outside the Abomination, and takes 17 (5d6) acid damage at the start of each of the Abomination's turns.

The Abomination's gullet can hold up to two creatures at a time. If the Abomination takes 20 damage or more on a single turn from a creature inside it, the Abomination must succeed on a DC 20 Constitution saving throw at the end of that turn or regurgitate all swallowed creatures, each of which falls 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 using 10 feet of movement, exiting prone.

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