Tanaril (5e Creature)
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Large fiend, chaotic neutral
Senses passive Perception 27, blindsight 300 ft (stays in every form)
Shapeshifter. Tanaril is a form of pure change, able to change form easily. As an action or during a short rest, Tanaril can change into any non unique creature, as though by the Shapechange spell, but also gains legendary actions, and lair actions if in a suitable place, decided by the DM. He can also decide to go back to his true form. Tanaril can also force a creature within 60 ft of him to make a DC 30 Wisdom save or be effected by the True Polymorph spell. Tanaril does not have to concentrate on the spell, ending it as a bonus action.
Action Name. Melee Weapon Attack: +X to hit, reach 5 ft., one target. Hit: X (1dX + X) damtype damage.
The can take 3 legendary actions, choosing from the options below. Only one legendary action option can be used at a time and only at the end of another creature's turn. The regains spent legendary actions at the start of its turn.