Backlash 
Instant
Tap target untapped creature. That creature deals damage equal to its power to its controller.
Legality
standardNOT LEGALpioneerNOT LEGALmodernNOT LEGALlegacyLEGALvintageLEGALcommanderLEGAL
Instant
Tap target untapped creature. That creature deals damage equal to its power to its controller.