Dellorath the Polymorph

At the beginning of combat on your turn, you
may exile the top cards of your library until you
exile a creature card. You may have Dellorath
the Polymorph become a copy of that creature
until end of turn. Put all cards exiled this way on
the bottom of your library in a random order.
"Oh, please, excuse the mess. I was a bird for the
last eight years."