Effect: The performer deals a group of cards from a complete deck to each of seven spectators and asks them to shuffle their respective packets and think of any one card within the packet. All the cards are then gathered together, thus reassembling a complete deck. The deck is again shuffled by one of the spectators, and the magician takes it for the first time, spreading the cards to himself. After some intense concentration, the performer names each and every selected card, and even revealing who chose which card!

Amazing! This effect is so strong and so simple-looking, that it fries both magicians and laymen!

supermind comes complete with what you'll need to perform this amazing phenomena, but it's not a special deck of cards.