Tifa, Martial Artist is a mythic Legendary Creature — Human Monk card from Final Fantasy Commander (FIC), collector number 6. Current market price: $2.80 (foil $0.39), TCGplayer market prices via Scryfall.
Melee (Whenever this creature attacks, it gets +1/+1 until end of turn for each opponent you attacked this combat.) Whenever one or more creatures you control with power 7 or greater deal combat damage to a player, untap all creatures you control. If it's the first combat phase of your turn, there is an additional combat phase after this phase.