Singularity Rupture 
Sorcery
Destroy all creatures, then any number of target players each mill half their library, rounded down.
Legality
standardLEGALpioneerLEGALmodernLEGALlegacyLEGALvintageLEGALcommanderLEGAL
Sorcery
Destroy all creatures, then any number of target players each mill half their library, rounded down.