Cascading Dreams

Search your library for up to three cards and exile them, then shuffle your library. An opponent may have you put any of those cards in your hand, for each card the do not put in your hand, cascade. (When you cast this spell, exile cards from the top of your library until you exile a nonland card whose converted mana cost is less than this spell's converted mana cost. You may cast that card without paying its mana cost. Then put all cards exiled this way that weren't cast on the bottom of your library