I have used it continuously and from the audience standpoint the effect is direct and easy to follow. Louis Vuitton Maryland Store. If you'll only go right through this as written without dragging, it is the best method of which I know. You pretend to write letters of the alphabet on the slate, where, quite visible, is a lead pencil list of the nine words of the first line on that page. Louis Vuitton Maryland Store. The spectator shuffles his own deck while you write a prophecy (dummy) and drop it in a cup on the table. This top piece again is put underneath the other and, in handing them again to the spectator, the two are turned over. Louis Vuitton Maryland Store. I used this test exactly as written at a company banquet in the Hotel As tor, New York City, about two years ago, and remember a magician who had been there and whom I did not meet, writing me and mentioning the slate test, saying that he had the mirror reflector method, but was sure I never went near the spectator while the drawing was made.