Venomous Breath 
Instant
Choose target creature. At this turn's next end of combat, destroy all creatures that blocked or were blocked by it this turn.
Legality
standardNOT LEGALpioneerNOT LEGALmodernNOT LEGALlegacyLEGALvintageLEGALcommanderLEGAL
Instant
Choose target creature. At this turn's next end of combat, destroy all creatures that blocked or were blocked by it this turn.