Markov Blademaster is a rare Creature — Vampire Warrior card from Dark Ascension (DKA), collector number 96. Current market price: $0.31 (foil $1.10), TCGplayer market prices via Scryfall.
Double strike (This creature deals both first-strike and regular combat damage.) Whenever this creature deals combat damage to a player, put a +1/+1 counter on it.