Awesome effect, highly recommended!
Three cards, each with a walnut shell printed on its back and only one with a pea on its front, are explained, then put into envelopes and mixed by a spectator. No matter how well the envelopes are mixed, the performer can always locate the pea! Everything is examinable and immediately repeatable! No reset! Easy to do!
*Includes a bonus routine where all the cards are shown and there is no pea, then a pea is shown under every shell! Finally, the cards are honestly shown, then placed in envelopes (so they can’t be manipulated), and finished as above.
Note: The envelopes are identical and are not marked in any way. The performer cannot see into the envelopes and does not get any clue from any of the envelopes. Each card is identical in size, shape and color. The cards are cut from ordinary poster board.
The method is so subtle and fool-proof, that it is the perfect principle for many routines, from standard magic effects, to mentalism. The props can be thoroughly examined. Effects can be repeated. Even if a spectator tries to mess things up, you always know the correct answer!