Show a black metal plaque with a white line drawn on it. 6 magnetic white discs are attached to it. Now ask a spectator to move from the first side to the second as many dots as he wishes.
After you finish, take the prediction from an envelope and it will match the combination created by the spectator. There is no forcing, it is a free choice. Supplied with metal plaque (measuring 23 x 11 cm) with six disc magnets and an envelope with a prediction. An effect always ready to amaze.
Online video instruction included.