Lust for War is a uncommon Enchantment — Aura card from Rise of the Eldrazi (ROE), collector number 157. Current market price: $0.16 (foil $0.50), TCGplayer market prices via Scryfall.
Enchant creature Whenever enchanted creature becomes tapped, this Aura deals 3 damage to that creature's controller. Enchanted creature attacks each combat if able.