Look at the top X cards of your library, where X is the amount of mana spent to cast this spell. Put two of them into your hand and the rest on the bottom of your library in a random order.
Flashback
![5 5](/images/productsymbols/5_icon.gif)
![Blue u](/images/productsymbols/u_icon.gif)
(You may cast this card from your graveyard for its flashback cost. Then exile it.)