Makoki Stone

The Makoki Stones were rock objects used as keys through a magical bond. Originally, they were one stone, but it was split into six stones. The stone had a record of every Brotherhood of Makuta member, their skill level, weaknesses, current location, etc.

History
The stone was stolen by Vezok and Hakann while being guarded by Lhikan. It was split into six pieces by "The Shadowed One" to make the ransom six times as much, creating six Makoki Stones.

The Toa Hordika had to find the Makoki Stones to get the Mask of Light. After assembling the six pieces, they arrived at a temple, where they placed the pieces onto a table to reveal the mask. The stones were then taken to Mata Nui. The Toa Mata used the Makoki Stones to unlock the passageway through Kini-Nui after receiving their Golden Kanohi.