RINING by Wenzi Magic & Himitsu Magic - TrickA ball changes to four (Multiplying Billiard Balls), Hopping Half, Cold Case, Cup and Bottle, Rubik's Dream When I lay down the names of these very famous props, if you know enough about them, you should know that we are talking about today: "shell." When we want to turn a ball into four, or a coin into two, in the vast majority of times, we need to use a shell it is by far the most reasonable and simplest tool. Of course, a shell not only appears,