Transcendent Master is a mythic Creature — Human Cleric Avatar card from Rise of the Eldrazi (ROE), collector number 51. Current market price: $2.70 (foil $17.00), TCGplayer market prices via Scryfall.
Level up {1} ({1}: Put a level counter on this. Level up only as a sorcery.) LEVEL 6-11 6/6 Lifelink LEVEL 12+ 9/9 Lifelink, indestructible