Serra Paragon is a mythic Creature — Angel card from Dominaria United (DMU), collector number 388. Current market price: $6.79 (foil $9.55), TCGplayer market prices via Scryfall.
Flying Once during each of your turns, you may play a land from your graveyard or cast a permanent spell with mana value 3 or less from your graveyard. If you do, it gains "When this permanent is put into a graveyard from the battlefield, exile it and you gain 2 life."