Temporal Aperture | Magic: The Gathering
Formats Temporal Aperture is Legal in
Official Oracle Text for Temporal Aperture
Official Rulings for Temporal Aperture
10/4/2004 : If your library is shuffled or that card otherwise leaves the top of your library, the effect ends.
10/4/2004 : The card is removed from the top of the library when you play it, just like a card is removed from your hand when you play it.