Spell Burst 
Instant
Buyback 
(You may pay an additional as you cast this spell. If you do, put this card into your hand as it resolves.)
Counter target spell with mana value X.
Legality
standardNOT LEGALpioneerNOT LEGALmodernLEGALlegacyLEGALvintageLEGALcommanderLEGAL