One of the Winners from the first Magic: The Creations Contest
Card Text:
Time Interruption
Play only before your untap phase. Change places with your opponent. Each player takes control of his opponent's hand, cards in play, library, and graveyard. Turn is played as normal, beginning with the untap phase. Any player may cast spells or use special abilities of the cards he or she controls and you may attack if desired. At the end of turn exchange places and card control with your opponent.