The effect: The magician writes something on a sheet of paper, folds it and tends it to a spectator to hold it. He comes out a few tokens, the two sides of which are of different colors. He asks a spectator to stack the tokens so that the same colors are faced. When the battery is complete, the prediction is open and carried out aloud. We note that the magician properly predicted the two final colors of the battery. A pocket effect to take everywhere with you. This tour can be repeated immediately with an always different result!