Effect 1:
The magician shows a cube with different colors faces, and said, "I had learned a new magic recently, the man who can throw the red face is win!" Magician threw the cube on the table and there are two cubes. Then pick up one of the cube, put it in front of an audience , and then said: "You can throw it now!" When the magician hands away, this cube come into a flat, and can not be threw.

Effect 2:
The Magician shows an empty paper bag and a cube, then ask an audience to take this bag. The Magician throw a cube into the bag, and take it out after a while, and put it into his pocket. After doing some magic action, he ask the audience to take out something from the bag. Results the audience take a same cube as the magician's.