Combust 
Instant
This spell can't be countered. Combust deals 5 damage to target white or blue creature. The damage can't be prevented.
Legality
standardNOT LEGALpioneerNOT LEGALmodernLEGALlegacyLEGALvintageLEGALcommanderLEGAL
Instant
This spell can't be countered. Combust deals 5 damage to target white or blue creature. The damage can't be prevented.