Pad of Miracles. Leiden, Holland: Anverdi, ca. 1975. A chosen card flips over at the command of the magician, as if moved by an unseen hand. 13 x 9 ? x 1?. With instructions. Good working condition. Essentially a portable juice joint, the Anverdi pad was adapted by Del Ray for his famous Million Dollar Card Trick. The device can also be used to control the roll of a gaffed die. .An inventive Dutch magician, Anverdi (Antonius Albertus de Vries, 1925 ? 1995), devised and manufactured clever props made from acrylic that primarily focused on tricks with liquid, and later, electronic marvels including those offered here. Most of Anverdi?s tricks were made in limited numbers in his home workshop, and as a result were expensive at the time of release, and have become sought after collectors items in the intervening years.