This prop was inspired by Ed Mellon's Quantimental Stand, which used 4 different colored balls. While this prop uses the same basic modus-operandi, it doubles the scope of the effect. You can use this with eight spectators, or with a single spectator, who can select playing cards, design cards, number cards, etc. The ideal effect which apparently doubles the probabilities against a random guess is with four cards and four envelopes. Four spectators each select any card, then place the card in any envelope, which is placed in their pocket. In spite of the odds, the performer can correctly divine which spectator selected which card, and placed it in which envelope. We supply the special Card-I-Mental stand and some accessories like blank cards, pay envelopes, and printed cards and envelopes for the presentation(s) that you prefer. No electronics, no magnets, no stooges, no forces.