Undying Rage is a common Enchantment — Aura card from Ultimate Masters (UMA), collector number 153. Current market price: $0.17 (foil $0.20), TCGplayer market prices via Scryfall.
Enchant creature Enchanted creature gets +2/+2 and can't block. When this Aura is put into a graveyard from the battlefield, return it to its owner's hand.