Rancor is a uncommon Enchantment — Aura card from Magic 2013 (M13), collector number 185. Current market price: $1.11 (foil $3.25), TCGplayer market prices via Scryfall.
Enchant creature Enchanted creature gets +2/+0 and has trample. When this Aura is put into a graveyard from the battlefield, return it to its owner's hand.