Polliwallop is a common Instant card from Bloomburrow (BLB), collector number 189. Current market price: $0.26 (foil $0.30), TCGplayer market prices via Scryfall.
Affinity for Frogs (This spell costs {1} less to cast for each Frog you control.) Target creature you control deals damage equal to twice its power to target creature you don't control.