Mystic Missionary

{u}{g}, Exile Mystic Missionary: Exile the top two
cards of target opponent's library. You may cast
those cards for as long as they remain exiled, and
you may spend mana as though it were mana of
any type to cast them.
At the beginning of your end step, scry X, where
X is the number of permanents you control and
don't own. Then if you control a permanent you
don't own, draw a card.