Sentinel Totem 
Artifact
When this artifact enters, scry 1. (Look at the top card of your library. You may put that card on the bottom.)
, Exile this artifact: Exile all graveyards.
Legality
standardNOT LEGALpioneerLEGALmodernLEGALlegacyLEGALvintageLEGALcommanderLEGAL