Rout is a rare Sorcery card from Invasion (INV), collector number 34. Current market price: $0.99 (foil $36.58), TCGplayer market prices via Scryfall.
You may cast this spell as though it had flash if you pay {2} more to cast it. (You may cast it any time you could cast an instant.) Destroy all creatures. They can't be regenerated.