Tree Skinner

Medium Fiend chaotic evil

STR	DEX	CON	INT	WIS	CHA
10 (+0)	16 (+3)	13 (+1)	14 (+2)	15 (+2)	18 (+4)

Skills: perception +4, stealth +7
Damage Resistances: bludgeoning, piercing, and slashing from nonmagical attacks not made with silvered weapons
Condition Immunities: charmed
Senses: darkvision 60 ft., passive Perception 14
Languages: Abyssal, Elvish, Infernal, Sylvan

False Appearance (Tree Form Only): While the skinner remains motionless, it is indistinguishable from a normal tree.
Inhabit Tree: As a bonus action, the skinner touches a Medium or larger tree that is not a creature and disappears inside it. While inside the tree, the skinner has tremorsense with a radius of 30 feet, has an AC of 15, has a speed of 0, and has vulnerability to fire damage. When the skinner is reduced to 15 hp, the tree dies and the skinner appears within 5 feet of the dead tree or in the nearest unoccupied space. The skinner can exit the tree as a bonus action, appearing within 5 feet of the tree in the nearest unoccupied space, and the tree reverts to being an object. The skinner can inhabit a tree for only 3 days at most before the tree dies, requiring the skinner to seek another vessel.
Magic Resistance: The skinner has advantage on saving throws against spells and other magical effects.

Claw: Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 6 (1d6 + 3) slashing damage. The target must succeed on a DC 13 Constitution saving throw or take 7 (2d6) poison damage and become poisoned until the end of its next turn.
Vine Whip (Tree Form Only): Melee Weapon Attack: +5 to hit, reach 20 ft., one target. Hit: 10 (2d6 + 3) bludgeoning damage, and if the target is a Large or smaller creature, it is grappled (escape DC 13). The skinner can grapple up to two creatures at one time.
Squeeze (Tree Form Only): The tree skinner makes one vine whip attack against a creature it is grappling. If the attack hits, the target is also unable to breathe or cast spells with verbal components until this grapple ends.