Iden

The Kanohi Iden is the Mask of Spirit. It allows the user to leave his/her solid body and become a ghost-like figure. When in his/her "spirit form," the user is intangible and his/her physical body goes limp. When intangible, a being can fly at great speeds. Also, one's spirit is unseen by all, except for those who wear an Elda or a Rode, and may only be communicated to with beings wearing one of those two masks. (There may be more beings or masks that can see and talk to spirits, but concurrently this is all we know)

When a being is in this spirit form, his/her body is vulnerable, being that he/she now has no way to protect their physical body. In Matoro's case, the other Toa Inika protect his body from harm until he returns. Or, before he uses the mask, he may cover his body with a layer of ice as a precautionary defense.

Also when a being is in his/her spirit form they cannot use their elemental powers. This is because elemental power requires a union of the mind and body. In a being's spirit form, he/she is just mind, therefore they can't use those abilities. Matoro lost it when he was transformed into a Toa Mahri.

Bearers

 * Toa Inika Matoro