Serra Ascendant is a rare Creature — Human Monk card from Secret Lair Drop (SLD), collector number 1125. Current market price: $41.54 (foil $39.36), TCGplayer market prices via Scryfall.
Lifelink (Damage dealt by this creature also causes you to gain that much life.) As long as you have 30 or more life, this creature gets +5/+5 and has flying.