The performer states that some card players seem to have psychic ability. These card players can correctly sense the cards in an opponent's hand. The performer says he would like to try an experiment to see if a participant has this ability to detect playing cards sight unseen. He shows four opaque envelopes and removes the four aces from a deck. The four aces are then placed inside the envelopes and mixed so the participant has no idea which envelope contains which ace. The envelopes are placed in a row in front of the participant. The participant is asked to guess which ace is in each envelope.
The participant points to one envelope and tells the performer which ace he thinks is inside. The performer then writes the suit of that ace on the outside of the envelope. This is repeated until each envelope has a suit written on the outside of it. The performer fans out the four envelopes, allowing the participant to see the suits written on each envelope. The performer states that he only needs three envelopes for the first phase of the test. He tells the participant to remove one envelope and place it aside as his lucky card. Assume he placed aside the envelope with Hearts written on it.
The performer opens each of the three remaining envelopes and shows that the participant has correctly guessed which ace was in each envelope. This is amazing in itself, but the real kicker is yet to come. The performer says no one could have known which envelope the participant would place aside. The participant then picks up the envelope that was placed aside and opens it. The performer does not touch the envelope. Inside is the correct ace, but there is also a slip of paper with a handwritten note. The note says: This card was placed aside as your lucky card. It is the Ace of Hearts. The participant can then verify the other three envelopes are empty and devoid of predictions. He may fully examine both the envelopes and the four aces.
The performer calls attention to three face-down envelopes that are on a table in full view. He says these contain three predictions. The performer then has a playing card freely selected and signed while he looks away; there is no force of any kind. The selected card is then lost in the deck. The deck is given to the participant, who cuts the deck at random and deals three cards face down onto the table. The performer then shows three more envelopes. He places the three dealt cards into these three envelopes, without looking at them. Neither the performer nor the participant knows the identity of the cards inside the envelopes. The participant is then asked to randomly assign a number from 1 to 3 for each envelope. These numbers are written on the faces of the envelopes. Finally, the participant is asked to choose one of these envelopes to set aside for the grand finale.
Now for the incredible three-way climax. The performer turns over the packet of three prediction envelopes on the table. Each one also has a number from 1 to 3 written on the face of it. The performer picks up, say, the envelope that has 2 on it. He opens it and shows it contains a single playing card. The participant's envelope that he chose to mark with 2 is also opened. Both cards are seen to match! The other envelope with a matching number (we will assume number 1) is opened, and those two cards also match! This double prediction is strong by itself, but the grand finale is yet to come.
Assume the envelope marked with 3 was placed aside for the grand finale. The performer hands his prediction envelope marked with 3 to the participant to open. Inside, instead of playing card, is a written prediction.
The prediction reads: "I predict the envelope you set aside will contain your selected card."
The participant opens the envelope marked with the number he chose to set aside. Sure enough, inside is his signed selected card.
Neither of the above is difficult and the items used all fit into the jacket pockets. He does have other things out but these are two that I have used.
On the border of our minds lies a place where dreams and reality are one, a world of magic...