Ulamog's Nullifier 
Creature — Eldrazi Processor
Devoid (This card has no color.) Flash Flying When this creature enters, you may put two cards your opponents own from exile into their owners' graveyards. If you do, counter target spell.
Legality
standardNOT LEGALpioneerLEGALmodernLEGALlegacyLEGALvintageLEGALcommanderLEGAL