You may look at the top card of your library any time.
You may cast instant and sorcery spells from the top of your library.
: Exile the top card of your library.
You may look at the top card of your library. (You may do this at any time.)
You may cast the top card of your library if it's an instant or sorcery card.
: Exile the top card of your library.
--This card has no flavor text --