Markov Waltzer is a uncommon Creature — Vampire card from Innistrad: Crimson Vow (VOW), collector number 242. Current market price: $0.05 (foil $0.28), TCGplayer market prices via Scryfall.
Flying, haste At the beginning of combat on your turn, up to two target creatures you control each get +1/+0 until end of turn.