Shadow Comet

The Shadow Comet is a legendary comet that flies in front of Solis Magna every three hundred years.

History
The Shadow Comet was created thousands of years ago. When the Makuta rebelled, Teridax threw some antidermis into space. During that time, the creation solidified, like Teridax planned, and it went into orbit around the world.

The comet was originally used by Miserix, who first realized that the comet blocked the on the outside of the Matoran Universe, putting a huge shadow over the world. He then learned that he could harness the shadow around him, increasing his elemental Shadow powers. With this huge power he possessed, Miserix used it to rebel against the Brotherhood of Makuta, though Teridax and his armies also used it to fight Miserix. Since then, the comet hasn't been used for any other purpose.

When everyone in the Matoran Universe evacuated to Spherus Magna, the comet could still be used.

Trivia

 * If Takanuva harnessed the comet's power while still a Toa of Light and Shadow, it would probably make him a full Toa of Shadow until it's effects wore off.
 * The powers of a Toa of Light are weakened during the time it passes in front of Solis Magna.