Rout 
Sorcery
You may cast this spell as though it had flash if you pay 
more to cast it. (You may cast it any time you could cast an instant.)
Destroy all creatures. They can't be regenerated.
Legality
standardNOT LEGALpioneerNOT LEGALmodernNOT LEGALlegacyLEGALvintageLEGALcommanderLEGAL