Thassa's Oracle

When this creature enters, look at the top X cards
of your library, where X is your devotion to blue.
Put up to one of them on top of your library and
the rest on the bottom of your library in a random
order. If X is greater than or equal to the number
of cards in your library, you win the game.

(Each {u} in the mana costs of permanents you
control counts toward your devotion to blue.)