Door of Possibilities

When Door of Possibilities enters the battlefield, starting with you, each player chooses two
nonland permanents from your library and puts
them face down then shuffle your library.
Randomly choose half that number of cards and
put them to exile them with Door of Possibilities.
Put the rest on the bottom of your library.
{w}{u}{b}{r}{g}, Sacrifice Door of Possibilities: Put
all cards exiled with this artifact into play.