Jaak'Zon, Haemonculus Adept

Ward {2}
When Jaak'Zon, Haemonculus Adept is cast, reveal cards from the top of your library until you reveal a creature card with greater power or toughness, exile it, then shuffle your library. You
may cast any cards in exile for as long as Jaak'Zon, Haemonculus Adept is on the battlefield.