Spellshift | Magic: The Gathering
Formats Spellshift is Legal in
Official Oracle Text for Spellshift
Official Rulings for Spellshift
2/1/2007 : If the revealed instant or sorcery card isn't cast, it gets shuffled back into the library.
2/1/2007 : If there are no instant or sorcery cards in the player's library, the entire library is revealed and then shuffled.