Bleeding Effect is a uncommon Enchantment card from Assassin's Creed (ACR), collector number 51. Current market price: $0.34 (foil $0.32), TCGplayer market prices via Scryfall.
At the beginning of combat on your turn, creatures you control gain flying until end of turn if a creature card in your graveyard has flying. The same is true for first strike, double strike, deathtouch, hexproof, indestructible, lifelink, menace, reach, trample, and vigilance.