Skuld the Future Seer

Flying, Haste
Whenever Skuld the Future Seer attacks, you
may look at the top card of your library. If it is an instant, you may cast it by paying {w/u} instead of
its mana cost.
Foretell {1}{w} (During your turn, you may pay {2} and exile this card from your hand face down.
Cast it on a later turn for its foretell cost.)