Ghast

Constitution Saving Throw: DC 10, any creature (other than a Ghast) that starts its turn in a 5-foot Emanation originating from the Ghast. Failure: The target has the Poisoned condition until the start of its next turn. Success: The target is immune to the Stench of all Ghasts for 1 hour.

Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 7 (2d4 + 3) piercing damage plus 9 (2d8) necrotic damage.

Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 10 (2d6 + 3) slashing damage. If the target is a non-Undead creature, it is subjected to the following effect. Constitution Saving Throw: DC 10. Failure: The target has the Paralyzed condition until the end of its next turn.