Flash of Insight
{X}{1}{U}
Instant
Look at the top X cards of your library. Put one of them into your hand and the rest on the bottom of your library in any order.
Flashback--{1}{U}, Exile X blue cards from your graveyard. (You may cast ~this~ from your graveyard for its flashback cost, then exile it. You can't exile ~this~ to pay for its own flashback cost.)