This effect never fails to stun an audience. Magician asks a spectator to think of any card and call it out. A deck of cards is removed from its case and spread face down until one face up card is seen. It is the selected card! But Wait! The card is turned over and it has a different color back than the rest of the deck.
Must have. Brainwave and invisible deck both are awesome and pretty easy to learn but with all magic take time to practice and be patience with yourself. - David Phillips