The Technomancer

When The Technomancer enters the battlefield, you
may search your library for a card named The Hat
and add it to your hand, then shuffle.

{x}{t}: Fateseal X (To fateseal X, look at the top X
cards of an opponent's library, then put any number
of them on the bottom of that player's library and
the rest on top in any order.)

"You're not winnin', son."