Brute. A melee weapon deals one extra die of its damage when the Abomination hits with it (included in attack). 

Stench. Any creature that starts its turn within 5 ft make a DC Con save or be poisoned until the start of their next turn. On a successful save, the creature is immune for 24 hours.

Multiattack. The Abomination makes 2 attacks; one with its hook and one with its cleaver.

Cleaver. Melee Weapon Attack: [roll]1d20+6[/roll] to hit, reach 5 ft., # target. Hit: [roll]3d6+4[/roll] slashing damage.

Hook. Melee Weapon Attack: [roll]1d20+6[/roll] to hit, reach 5 ft., 1 target. Hit: [roll]3d8+4[/roll] piercing damage.

Hook (Thrown). Ranged Weapon Attack: [roll]1d20+6[/roll] to hit, range 15 ft., 1 target. Hit: [roll]2d8+4[/roll] piercing damage. Target grappled and restrained, action Strength save DC 14, pulled 10 ft towards Abomination.