The magician makes a prediction. He seals it inside of an envelope, which stays in full view the entire time. Then the magician, using a deck of cards, asks the spectator to make all the decisions. Through an eliminating process, finally they end up with one single card. The magician asks from the spectator to open the envelope and reveal the prediction and it seems like something went wrong... but wait until the end.
Can also be done with a borrowed deck of cards!!!
Download the video and learn this mystifying effect.