Natural Selection 
Instant
Look at the top three cards of target player's library, then put them back in any order. You may have that player shuffle.
Legality
standardNOT LEGALpioneerNOT LEGALmodernNOT LEGALlegacyLEGALvintageLEGALcommanderLEGAL
Instant
Look at the top three cards of target player's library, then put them back in any order. You may have that player shuffle.