A-Galvanic Discharge 
Instant
Choose target creature or planeswalker. You get 
, then you may pay any amount of . Galvanic Discharge deals that much damage to that permanent.
Legality
standardNOT LEGALpioneerNOT LEGALmodernNOT LEGALlegacyNOT LEGALvintageNOT LEGALcommanderNOT LEGAL