Crystal Prison by Flat Base & TCC MagicA collaboration between Flat Base (creator of PIN) and TCC, brings a miracle in the audience's hands to the world of cube magic. The Effect The magician introduces a prediction bag and two cubes. An audience member selects one, signs it, and scrambles it. Both cubes are placed into a paper bag. The magician removes the unscrambled cube, leaving the signed, scrambled one inside. In a startling moment, the paper bag is crushed flat: the signed cube has