A-Knockout Blow 
Instant
This spell costs less to cast if it targets a red creature.
Destroy target tapped creature. You gain 2 life.
Legality
standardNOT LEGALpioneerNOT LEGALmodernNOT LEGALlegacyNOT LEGALvintageNOT LEGALcommanderNOT LEGAL
Instant
This spell costs less to cast if it targets a red creature.
Destroy target tapped creature. You gain 2 life.