Ogre Flesh Heap

Undead Fortitude (1/Day). If the zombie is reduced to 0 hit points by damage that isnt radiant or from a critical hit, its instead reduced to 1 hit point, falls prone, and is stunned until the end of its next turn, appearing to be dead.

Undead Nature. A zombie doesnt require air, sustenance, or sleep.

Greatclub. Melee Weapon Attack: +6 to hit, reach 5 ft., one target. Hit: 13 (2d8 + 4) bludgeoning damage and if the target is a Medium or smaller creature it makes a DC 14 Strength saving throw falling prone on a failure.

Sweeping Strike. Melee Weapon Attack: +6 to hit, reach 5 ft. all creatures within 5 feet. Hit: 8 (1d8 + 4) bludgeoning damage and if the target is a Medium or smaller creature it makes a DC 14 Strength saving throw. On a failure it is pushed 10 feet away from the ogre.

Grab. Melee Weapon Attack: +6 to hit, reach 5 ft., one target. Hit: 11 (2d6 + 4) bludgeoning damage and the target is grappled if its Medium or smaller (escape DC 14) and until the grapple ends the zombie can't grab another target.

Bite. Melee Weapon Attack: +6 to hit, reach 5 ft., one target grappled by a zombie. Hit: 15 (2d10 + 4) piercing damage and the zombie regains hit points equal to the damage dealt

Bodyblock. If the ogre flesh heap is grappling a creature when it is hit with a weapon attack by a creature it can see, it uses the creature as a shield, adding 2 to its AC against the attack. If this causes the attack to miss, the attack hits the grappled creature instead.

Corpulent Expulsion (Recharge 6. When it takes damage, the ogre flesh heaps belly splits and releases a torrent of caustic gore in a 30-foot cone. Creatures in this area make a DC 14 Dexterity saving throw, taking 14 (4d6) acid damage on a failure and half damage on a success. The flesh heap then takes 10 (3d6) acid damage.