Blade of the Swarm 
Creature — Insect Assassin
When this creature enters, choose one — • Put two +1/+1 counters on this creature. • Put target exiled card with warp on the bottom of its owner's library.
Legality
standardLEGALpioneerLEGALmodernLEGALlegacyLEGALvintageLEGALcommanderLEGAL