Disallow 
Instant
Counter target spell, activated ability, or triggered ability. (Mana abilities can't be targeted.)
Legality
standardNOT LEGALpioneerLEGALmodernLEGALlegacyLEGALvintageLEGALcommanderLEGAL
Instant
Counter target spell, activated ability, or triggered ability. (Mana abilities can't be targeted.)