The magician removes a blue back deck from a red cardcase and asks a spectator to touch any card

Knowledge of "copy/paste

Selections

then this book could do the trick for you

Volume 1 Topics Include:

Theta Waves | David Devlin - (Download) Blake Vogt The magician removes a blueA Dazzling Effect for Any Occasion! A packet of eight cards is shown. All eight cards are different on the face. The backs, however, are not shown. It is explained to the spectator that there is one card and one card only that's back is different than the others. The spectator decides on one card. That card is held by the spectator while you show the backs of the unselected cards. Those seven cards have blue backs. The spectator then turns over his