Bloated Corpse

Undead Fortitude. If damage reduces the bloated corpse to 0 hit points, it must make a constitution saving throw DC of 5 + the damage taken, unless the damage is from radiant or a critical hit, it returns to 1 hit point.

Bloated Regeneration. At the beginning of the bloated corpses turn, it regains 10 health if it has at least 1 hit point. If the bloated corpse takes radiant damage, if does not regenerate at the start of its next turn.

The Revenge. If the bloated corpse has not been killed within 3 rounds of entering combat, it explodes and each creature within a 20 foot radius must make a DC 16 Dexterity saving throw, taking (8d6) [acid] damage on a failed saving throw, or half as much on a pass. Creatures that are still within the bloated corpses stomach have disadvantage on the save and take (16d6) [acid] damage on a fail, and half as much damage on a pass.

Multi-Attack. The bloated corpse makes 2 bloated grasp attacks.

Bloated Grasp. Melee Weapon Attack: +7 to hit, reach 5 ft., 1 target. Hit: (2d6 + 3) [Bludgeoning] damage plus (2d6) [necrotic] damage. A creature hit by bloated grasp must make a DC 16 strength save or be grappled. 

Consume. A creature grappled by the bloated corpse must make a DC 16 strength save at the end of their turn, on a failure the creature is brought close to its stomach while it widens, and they are merged into it. On a pass the creature is no longer grappled and free. Creatures who start their turn within the corpses stomach take (4d6) [acid] damage on the start of their turn and are blinded and restrained. A creature inside of the corpses stomach, or any other enemy towards the corpse must deal 30 damage or more to the corpse in 1 hit for the consumed creature to get ejected out of the stomach. A creature falls prone 10 feet Infront of the bloated corpse when ejected.

Acid Lob. Ranged Weapon Attack: +7 to hit, range 20/40 ft., 1 target. Hit: (3d6 + 7) [Acid] damage.

Guttural Screech. Each enemy within a 20 foot radius must make a DC 16 Wisdom saving throw, on a failed save the creature is frightened for 1 minute and may remake the save at the end of their turn. On a pass nothing happens to the creature, and they are immune to its effect until the next day.

Enticing Stench. Each enemy within a 20 foot radius must make a DC 16 intelligence saving throw, on a fail the creature is charmed and must use their action and full movement to get as close to the bloated corpse as possible. If a creature passes there is no effect, and the creature cannot be effected by this again until the next day

Acidic Hunger. When a creature becomes consumed in the corpses body, the corpse may use its bonus action to move 15 feet in any direction.