Heart of the Visorak

The Heart of the Visorak was an artifact that was used by the Brotherhood to summon mass numbers of Visorak to one location.

Scroll of Preparations
The Heart of the Visorak was only recently recovered from the Brotherhood of Makuta by Toa Pohatu and Toa Onua on a quest to fulfil the tasks on the scroll of preparations. It was then passed on to the Order of Mata-Nui who gave it to their agent 'Johmak'.

Extinction of the Visorak
Johmak then traveled to Metru-Nui and passed the Heart of the Visorak on to the Toa Mahri, informing them of their mission, to take the Heart to Artidax, put it in the ground and run. Toa Jaller, Toa Hahli and Toa Nuparu swiftly set off to Artidax with the Heart, leaving Toa Hewkii and Toa Kongu to protect the city.

Upon arriving on Artidax, the three Toa were ambushed by Barraki Takadox, who hypnotized them into standing still on the island as the Visorak approached and as the island's volcano erupted. Luckily, Makuta Teridax, decided to save the Toa by breaking Jaller out of his trance so he could free his other two teammates. The Toa fled the island as the volcano erupted, wiping out the Visorak species and burying the Heart in molten magma, destroying it.

Fractures Universe
In the Fractures Universe, the Heart of the Visorak remained in the possession of Makuta Chirox, who stored it in his laboratory facility on the island of Visorak. During the Final Push, Toa Kopaka embarked on a covert operation in order to retrieve it from the Makuta's lair.