Stirring Address is a common Instant card from Modern Horizons (MH1), collector number 32. Current market price: $0.10 (foil $0.55), TCGplayer market prices via Scryfall.
Target creature you control gets +2/+2 until end of turn. Overload {5}{W} (You may cast this spell for its overload cost. If you do, change "target" in its text to "each.")