Ghoulish Impetus is a rare Enchantment — Aura card from Commander Masters (CMM), collector number 763. Current market price: $4.41 (foil $11.42), TCGplayer market prices via Scryfall.
Enchant creature Enchanted creature gets +1/+1, has deathtouch, and is goaded. (It attacks each combat if able and attacks a player other than you if able.) When enchanted creature dies, return this card to the battlefield at the beginning of the next end step.