Valkyrie Harbinger is a rare Creature — Angel Cleric card from Kaldheim Promos (PKHM), collector number 374★. Current market price: — (foil $3.14), TCGplayer market prices via Scryfall.
Flying Lifelink (Damage dealt by this creature also causes you to gain that much life.) At the beginning of each end step, if you gained 4 or more life this turn, create a 4/4 white Angel creature token with flying and vigilance.