Oketra the True is a mythic Legendary Creature — God card from Amonkhet (AKH), collector number 21. Current market price: $3.04 (foil $10.85), TCGplayer market prices via Scryfall.
Double strike, indestructible Oketra can't attack or block unless you control at least three other creatures. {3}{W}: Create a 1/1 white Warrior creature token with vigilance.