Armor Class 11
Hit Points 18 (4d6 + 4)
Speed 20 ft.
Damage Resistances cold, fire, lightning
Damage Immunities poison
Condition Immunities poisoned
Senses Darkvision 60 ft., passive Perception 9
Languages Abyssal; telepathy 60 ft. (works only with creatures that understand Abyssal)
Challenge 1/4
Rend. m +3, reach 5 ft. Hit: 4 (1d6 + 1) Slashing damage.
Fetid Cloud (1/Day). con DC 11, each creature in a 10-foot Emanation originating from the dretch. The target has the Poisoned condition until the end of its next turn. While Poisoned, the creature can take either an action or a Bonus Action on its turn, not both, and it can't take Reactions.
Monster Manual (2024), p. 103