Markov Waltzer is a uncommon Creature — Vampire card from Innistrad: Crimson Vow (VOW), collector number 313. Current market price: $0.13 (foil $0.27), 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.