Olmak

The Kanohi Olmak is the Mask of Dimensions. It has the power to make portals leading into other dimensions. The only known user is Brutaka. The only known uses were to teleport a Tahtorak to Metru Nui, to get rid of a Doom Viper, and to make a portal to the Zone of Shadows, which was supposed to be used to trap Axonn, but was then used to free the same Tahtorak and the Krahka.