Ty Lee, Chi Blocker is a rare Legendary Creature — Human Performer Ally card from Avatar: The Last Airbender Promos (PTLA), collector number 76s. Current market price: — (foil $6.17), TCGplayer market prices via Scryfall.
Flash Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.) When Ty Lee enters, tap up to one target creature. It doesn't untap during its controller's untap step for as long as you control Ty Lee.