Yin, Oni of the Immaterium

Speed: 30ft(30ft fly), Saves-Dex:+3, Con:+6,
Wis:+4, Cha:+5; Darkvision-60ft,
Arcana:+5, Deception:+8, Perception:+4
Signature Atk: Melee Odatchi +7, 10ft reach, Hit 2d10+4 slashing (2 Atks per turn) magical
Innate Spellcasting: DC 13 (At Will) Darkness, Invisibility; (1/Day) Charm Person, Cone of Cold, Gaseous Form, Dominate Person
Troll Mage: Yin regains 1 point of dmg each turn, unless at 0. Can Polymorph into a small/medium humanoid form.