Medium Undead, Any
Undead Fortitude: If damage reduces the undead abomination 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, the undead abomination drops to 1 hit point instead.
Rake. Melee Weapon Attack: +3 + PB to hit, reach 5ft. one target. Hit: 1d6 bludgeoning + PB necrotic damage.
Meat shield. When a friendly creature within 5 feet of the abomination is hit, the abomination can choose to take the hit instead of the intended target. The attack automatically hits the undead abomination.