Mai, Jaded Edge is a uncommon Legendary Creature — Human Noble card from Avatar: The Last Airbender (TLA), collector number 147. Current market price: $0.21 (foil $0.32), TCGplayer market prices via Scryfall.
Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.) Exhaust — {3}: Put a double strike counter on Mai. (Activate each exhaust ability only once.)