Muriel, Angel of Gemini

Lifelink
When Muriel enters the battlefield, you may
reveal the top card of your library. If it is a
Gemini spell, you may exile it. If not, shuffle
your library. Until the end of your next turn
you may cast the spell from exile.
Whenever your library is shuffled, Scry 1.
{1}{p/u}{p/u}, Return this card from the battlefield to
your hand.