Mental Telepathy Cards (BLANK) by Chazpro Magic - TrickNew Routines! Extra Cards! 30 cards provided! Telepathy Cards are based on a diabolical principle credited to Bob Fillman and Tan Hock Chuan. Briefly: 6 ungaffed envelopes are shown, each with an ordinary, white card inside. A spectator selects any card, signs it, then turns it over and puts it back into the envelope. All the envelopes are closed, then thoroughly mixed. After the mixing, no one the spectators or the performer knows which envelope