Supermind - Henry Evans

The magician hands a group of cards to each of the seven spectators* and asks them to shuffle the cards and think of any one. All the cards are then put together and shuffled. Handling the deck for the first time, the magician spreads the cards for himself. After some concentration, he names some cards at random, guessing the chosen cards and who chose which!

Effect Includes specially made gaff and instructions.

*Can be easily modified to perform for one spectator.