Corrupted Bloat. If the zombie takes at least 10 points of slashing or piercing damage in a turn, a gout of toxic gas erupts from it. Each creature within 10 ft. must succeed on a DC 13 Dexterity saving throw or take 7 (2d6) poison damage.

Volatile. If the zombie takes any fire damage, it must succeed on a DC 10 Constitution saving throw or explode. Each creature within 20 ft. must succeed on a DC 13 Dexterity saving throw or take 14 (4d6) fire damage and be knocked prone, or take half as much on a success.

Multiattack. The zombie makes two attacks with its grasp of the dead.

Grasp of the Dead. Melee Weapon Attack: +4 to hit, reach 5 ft., one target. Hit: 6 (1d6 + 2) bludgeoning damage and the target is grappled (escape DC 12)

Festering Bite. Melee Weapon Attack: +4 to hit, reacht 5 ft., targets one grappled creature. Hit: 9 (2d6 + 2) piercing damage and 7 (2d6) necrotic damage.