Avatar of Karkruas (5e Creature)
From D&D Wiki
Avatar of Karkruas
Medium elemental, neutral evil
Damage Immunities Bludgeoning,piercing, and slashing damage from nonmagical attacks, thunder,necrotic,poison, psychic
Living wind The Avatar of Karkruas can fit through any opening or seal that is not airtight.
Mind steal If the Avatar does damage to a humanoid creature with an intelligence score over 12 the target must compete roll a DC25 intelligence saving throw or have it's Charisma score reduced to 0 for 5(1d6+3) hours. If the target is of a Neutral or Evil alignment it is under the control of the Avatar as if under the effect of a Geas spell.
Slam. Melee Weapon Attack: +5 to hit, reach 6 ft., one target. Hit: 5 (1d6 + 2) bludgeoning damage + 4 (1d4) psychic damage
The Avatar of Karkruas is an incorporeal living gust of wind, similar to an invisible stalker. Any touched by the Avatar of Karkruas feels a sudden chill as their mind is ripped out of their body. Although in the case of Good aligned creatures, this effect wears off, to evil or neutral aligned creatures the effect permanently destroys their free will, putting them under the control of Karkruas.