Firestorm 
Instant
As an additional cost to cast this spell, discard X cards. Firestorm deals X damage to each of X targets.
Legality
standardNOT LEGALpioneerNOT LEGALmodernNOT LEGALlegacyLEGALvintageLEGALcommanderLEGAL
Instant
As an additional cost to cast this spell, discard X cards. Firestorm deals X damage to each of X targets.