Organic Extinction 
Sorcery
Improvise (Your artifacts can help cast this spell. Each artifact you tap after you're done activating mana abilities pays for 
.)
Destroy all nonartifact creatures.
Legality
standardNOT LEGALpioneerNOT LEGALmodernNOT LEGALlegacyLEGALvintageLEGALcommanderLEGAL