Valley Rally is a uncommon Instant card from Bloomburrow (BLB), collector number 159. Current market price: $0.20 (foil $0.28), TCGplayer market prices via Scryfall.
Gift a Food (You may promise an opponent a gift as you cast this spell. If you do, they create a Food token before its other effects. It's an artifact with "{2}, {T}, Sacrifice this token: You gain 3 life.") Creatures you control get +2/+0 until end of turn. If the gift was promised, target creature you control gains first strike until end of turn.