Oros, the Avenger is a rare Legendary Creature — Dragon card from Commander 2011 Oversized (OCMD), collector number 216. Current market price: — (foil $3.59), TCGplayer market prices via Scryfall.
Flying Whenever Oros deals combat damage to a player, you may pay {2}{W}. If you do, Oros deals 3 damage to each nonwhite creature.