Curatio (Fractures Alternate Universe)

The Grand Kanohi Curatio was the Mask of Extinction. It was a one-of-a-kind Kanohi that was synthetically created as a means of combatting the Makuta species.

Creation
In the Fractures Universe, around 2,000 years ago, a century into the reality's 3,000-year conflict against the Brotherhood of Makuta, an alliance between Artahka and the Turaga High Council of Metru-Nui led to a team of Matoran scientists working closely with Artahka to build a weapon that would devastate the Brotherhood of Makuta and win the war.

Supported by the Turaga High Council of Metru-Nui, as well as the other Matoran resistance colonies, this team of scientists colaborated to create a one-of-a-kind Kanohi Mask that would critically injure Makuta.

Post-War
Two-thousand years later, the Mask came into the posssession of a former Order of Mata-Nui agent, who was tasked with transporting it to the Turaga High Council to ensure its safe-keeping.

However, the agent swiftly discovered that his mission had been compromised and that he was being persued by Brotherhood servants. Aware that he was being shadowed, he delivered the Kanohi to Hollian, a Vortixx who had been a close friend of his on Xia, intent on returning for it. However, he was assassinated and the Mask was left in Hollian's possession.

Quotes
"It’s a one of a kind Immoral Kanohi. Designed specifically to kill Makuta. Upon activation it detects Antidermis, melts Protosteel casing, then dissolves a Makuta’s essence."

- Hollian, Over Your Shoulder.

"This mask is a curse. The most Immoral Kanohi in existence, worse than a Mask of Undeath."

- Toa Tollubo's opinion of the Kanohi, Over Your Shoulder.

Trivia

 * In the Deserts of Death Universe, the Mask of Extinction was instead called the Mask of Cleansing.

Appearances

 * Over Your Shoulder - First Appearance