Strength of the Coalition is a uncommon Instant card from Dominaria United (DMU), collector number 180. Current market price: $0.16 (foil $0.09), TCGplayer market prices via Scryfall.
Kicker {2}{W} (You may pay an additional {2}{W} as you cast this spell.) Target creature you control gets +2/+2 until end of turn. If this spell was kicked, put a +1/+1 counter on each creature you control.