Nighthawk Scavenger is a rare Creature — Vampire Rogue card from Outlaws of Thunder Junction Commander (OTC), collector number 144. Current market price: $0.94, TCGplayer market prices via Scryfall.
Flying, deathtouch, lifelink Nighthawk Scavenger's power is equal to 1 plus the number of card types among cards in your opponents' graveyards.