Protect the Negotiators is a uncommon Instant card from Dominaria United (DMU), collector number 62. Current market price: $0.27 (foil $0.27), TCGplayer market prices via Scryfall.
Kicker {W} (You may pay an additional {W} as you cast this spell.) If this spell was kicked, create a 1/1 white Soldier creature token. Counter target spell unless its controller pays {1} for each creature you control.