This two phase routine begins by showing the spectator five pairs of E.S.P. symbols. You openly predict which symbol the spectator will select. After shuffling the symbols you give the spectator an absolutely free choice of selecting one of the cards. When he turns over the selection, he is shocked to find that it is the one you predicted. A perfect match.
WOW! what a trick but, wait, the magic is just beginning. You take the freely selected symbol and use it to magically transform all the other cards into duplicates of itself.