Grateful Apparition is a uncommon Creature — Spirit card from Phyrexia: All Will Be One Commander (ONC), collector number 73. Current market price: $0.38, TCGplayer market prices via Scryfall.
Flying Whenever this creature deals combat damage to a player or planeswalker, proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)