Shape changes to the degree which it turns. When you are done it becomes a cube
I was dumbfounded after perform several twist to scramble this cube. It’s amazing. You hardly notice which part is the right one for each position. The same color in every face adding the confusion. It feels like the cube changes its size. It looks like a Transformer robot in transformation phase, not a robot yet but not a car either. It took me quite sometime to understand the principle of the mirror cube. But definitely, no speeding using this one. Really love this one.