Text (DI+errata): Exile all cards from your hand face down. At the beginning of the next end step, return those cards to your hand, then draw a card. [Oracle 2009/07/08]
No player may look at the face down cards. [Dissension FAQ 2006/04/13]
If the delayed trigger is countered, the cards cannot be returned to the game. [Dissension FAQ 2006/04/13]
If played during your End of Turn step, the cards won't return until the end of your next turn. [Dissension FAQ 2006/04/13]