Planar Dissolution

At the beginning of your end step, put an entropy counter on Planar Dissolution, then each player exiles X cards from the bottom of his or
her library face down, where X is the number of entropy counters on Planar Dissolution.
(No player may look at face-down cards in exile.)
"The Eldrazi were essential to the life cycle of the Multiverse. Without them, this is the eventual fate of all worlds." -Ugin, the Last Planeswalker