Butcher's Glee is a common Instant card from Iconic Masters (IMA), collector number 84. Current market price: $0.13 (foil $0.34), TCGplayer market prices via Scryfall.
Target creature gets +3/+0 and gains lifelink until end of turn. Regenerate it. (Damage dealt by a creature with lifelink also causes its controller to gain that much life.)