Parallectric Feedback 
Instant
Parallectric Feedback deals damage to target spell's controller equal to that spell's mana value.
Legality
standardNOT LEGALpioneerNOT LEGALmodernLEGALlegacyLEGALvintageLEGALcommanderLEGAL
Instant
Parallectric Feedback deals damage to target spell's controller equal to that spell's mana value.