Xakar

The Kanohi Xakar is the mask of Hallucination. It allows the user to inflict a target with visual (seeing), auditory (hearing) and tactile (feeling) hallucinations. Without proper training in using the mask, the user can suffer random hallucinations as well.

Description
The Xakar was first created to stop prison breaks, as it's powers often made escapees easier to catch. However, the Komau eventually became a more popular and ultimately more effective mask, so many Xakar had their powers removed and were smelted to be recycled. As of now very few Xakar exist.

When activated, the Great Xakar allows the user to mentally target another being. This target must be awakened (cannot be asleep or in stasis) and must have a sapient mind (not a robot or non-sapient species). Afterwards, the user can choose one of three kinds of hallucinations to inflict: Because of the manner of it's power, the mask cannot be used to mentally send information to a teammate, as every hallucination the mask creates is entirely fantasy and cannot be true. The user also has very little control over what exactly the target hallucinates, aside from choosing from the three aforemention types of hallucinations.
 * Visual, or seeing things that aren't there
 * Auditory, or hearing things that aren't there
 * Tactile, or touching or feeling things that aren't there

Great

 * Makuta Tetradon

Trivia

 * Tetradon was originally going to wear a Mask of Blindness, however CaptainLandr0ver thought inducing hallucinations would be a much scarier power.
 * Beings who are insane, schizophrenic or otherwise suffer hallucinations often enough are immune to the mask's powers.
 * The Xakar's power is considered very immoral by Toa, and they would choose not to wear or use it.