Chase The Sky

At the beginning of your upkeep, scry 1.
{2}{u}{t}: Draw a card.
{2}{u}{u}, Sacrifice Chase The Sky: Search your library for a card with converted mana cost X, where X is the number of cards in your hand, then, exile it. while exiled, you can cast this card as if it had flash, or without paying its mana cost. If a card cast this way would be put into a graveyard this turn, exile it instead.