Divine the Stars

Relay X (As an additional cost to cast this
spell, exile X nonland permanents you
control. Return them to the battlefield at the
beginning of your next upkeep. Creatures
returned this way gain haste until end of
turn.)
Scry X, where X is the number of cards exiled
with this spell, then reveal the top card of your
library. If the converted mana cost of the revealed
card is equal to X, take an extra turn.