Armor Class 13
Hit Points 19 (3d8 + 6)
Speed 30 ft.
Damage Resistances cold, fire, lightning
Damage Immunities poison
Condition Immunities charmed, exhaustion, frightened, grappled, poisoned, restrained
Senses Darkvision 60 ft., passive Perception 9
Languages understands Abyssal but can't speak
Challenge 1
Contortionist. The manes can move through a space as narrow as 1 inch without expending extra movement to do so.
Sickening Vapors. con DC 12, each creature in a 5-foot Emanation originating from the manes at the end of the manes's turn. The target has the Incapacitated condition until the end of its next turn. The target is immune to this manes's Sickening Vapors for 24 hours.
Claw. m +4, reach 5 ft. Hit: 5 (1d6 + 2) Slashing damage plus 5 (2d4) Necrotic damage.
Shadow Stealth. While in Dim Light or Darkness, the manes takes the Hide action.
Monster Manual (2024), p. 201