And Then There Were 4 - SS (Goshman)

A spectator holds a sponge cube in his closed hand. Magician touches the spectator's hand with a coin and the sponge multiplies into two! Both of the cubes are again held by the spectator and with another touch of the coin they impossibly multiply into 3! All 3 cubes are then clearly placed into spectator's hand and magician touches the hand with the coin again and this time it's one large cube! Includes all sponges.