Undead Construct: When rolling Hit-Points re-roll any any score below 50. Roll 1D4+1 to determine the number of arms possessed by the Undead Monstrosity.

Corpse consumption: The Undead Monstrosity can consume a corpse to regain hitpoints equal to 7(1d6+4). Consumption takes two combat turns.

Multi-Attack. Melee Attack: One Swipe attack per arm.

Swipe. Melee Attack. +4 to hit, range 10 ft. 1 target. Hit: 8 (1d8+4) bludgeoning damage.

Smash. Melee  Attack: Dex. 15 to save, reach 10 ft., 10 foot cone. Hit: 10 (1d12+4) bludgeoning damage and fall prone or half has much on a successful save and no other effects.

Fling. Ranged Attack: +4 to hit, range 45/90 ft., 1 target. Hit: 8 (1d8+ 4) bludgeoning damage. If no other ammunition is available the Undead Monstrosity may fling it's own body parts at the cost of 5 HP.

Stunning Roar. As a reaction when provoked by an enemy leaving its reach the Undead Monstrosity can release a stunning roar. All creatures within 5ft of it must make an Con 13 saving throw it be stunned for until the end of the Undead Monstrosity's next turn. Undead and constructs are immune and elves make the saving throw with advantage.