Cradian Warp-Beast

Protection from blue and from black
While an opponent is searching their library, you
may pay {1}{u}{u}{b}. If you do, put Cradian
Warp-Beast from your hand onto the battlefield.
Then that player exiles each card they find.
Whenever Cradian Warp-Beast deals combat
damage to a player, that player exiles the top ten
cards of their library.