Magnets used for making the Magnetizer Stadium

The Magnetizer Stadium is a really cool stadium with a really cool gimmick. The Stadium has free Magnetic Rings on a pocket which should be attached to a bey's track or the top of any other tip without a track (i.e. a 4D bottom). Then when the bey is launched, the magnets in it start to move. Sometimes they repel the magnets and so, the beys float on air. Sometimes they attract the magnet, so the beys are attached to the stadium so much, that even a mighty blow won't lift them off the stadium.