Chimeric Horror

Superior Undead Fortitude. If damage reduces the zombie to 0 hit points, it must make a Constitution saving throw with a DC equal to the damage taken, unless the damage is radiant or from a critical hit. On a success, the zombie drops to 1 hit point instead.

Multiattack. The chimeric horror makes three attacks: one with its bite, one with its Maul attack, and one with its Rake attack. When its Hydrochloric Bile is available, it can use the Bile in place of its bite or maul.

Bite. Melee Weapon Attack: +7 to hit, reach 5 ft., one target. Hit: 11 (2d6 + 4) piercing damage.

Maul. Melee Weapon Attack: +7 to hit, reach 5 ft., one target. Hit: 10 (1d12 + 4) bludgeoning damage.

Rake. Melee Weapon Attack: +7 to hit, reach 5 ft., one target. Hit: 11 (2d6 + 4) slashing damage.

Hydrochloric Bile (Recharge 5–6). All three heads vomit acidic bile in a 15-­-foot cone. Each creature in that area must make a DC 15 Dexterity saving throw, taking 31 (7d8) Acid damage on a failed save, or half as much damage on a successful one.

Hand made Monster. Due to its masterful construction, the Chimeric Horror retains a small amount of the sentience of the victims who comprise it. As a reaction, when it is struck with an attack, it can release one of its minds from its shared conciousness for a breif moment, and one of its heads will let out a bone chilling, human shriek, forcing all creatures within 5ft. to make a DC 13 Intelligence Saving Throw or take 2d4 Psychic damage.