Spoils of the Hunt is a common Instant card from Adventures in the Forgotten Realms (AFR), collector number 205. Current market price: $0.07 (foil $0.12), TCGplayer market prices via Scryfall.
Target creature you control gets +1/+0 until end of turn for each mana from a Treasure that was spent to cast this spell. Then that creature deals damage equal to its power to target creature an opponent controls.