Pedro's Green Card
The Magician shows his Red or Blue-backed Bicycle deck along with his distinct "Prediction Pad". The Magician asks the Spectator to pick a card in a very unusual way. The deck is turned face up, and the Magician challenges the Spectator to pick a favorite card, least favorite card or any card at all. There is no "force" possible.
The card is chosen, and placed into the Prediction Pad. When the pad is opened there is a message written on it with a finger pointing to the selected card that says, "I PREDICT YOU WILL CHOOSE THIS CARD." After the laughter (or scoffing) subsides, the selected card is moved further down the Prediction Pad to reveal the message, 'THE ONLY CARD WITH A GREEN BACK."
The Magician then reveals that the only card with a different color (GREEN) back is the one slected by the Spectator.