The Protectors, while reciting the Prophecy of Heroes, invoked the powers of the Vahi to bring the Toa Mata through space and time to the island of Okoto to help them in their time of need.

This goes along with the Vahi being only half a mask. The Vahi is really the Mask of Space-Time. It can accurately send anyone anywhere into space time. Only the time portion is in the main universe, as a functioning Mask of Space-Time would be too powerful for any one person to control. So instead, a mask that allows one to speed up or slow down time is in the Mataverse, while one that allowed the user to make distances longer and shorter was in another universe.

Alone, they were not complete, but when they were called upon together, they were able to use the powers described.

Ekimu, in his studies of the Masks, learned of this Mask, and, shortly before his fall, managed to figure out how to invoke it. He communicated this to the Protectors, and they invoked it to bring the Mataverse Toa Nuva into the Okotoverse.

This journey, however, left them memoryless and changed