Changes

The '''{{PAGENAME}}Octocalvariae''' is a powerful [[psychic]] [[Xenos]] and a worshiper of [[Chaos Undivided]], that has become fully corrupted by the powers of the [[Warp]].{{Fn|1}}

The Xenos became a threat to the [[Imperium]], when it used its immense psychic abilities and the power of the Warp, to corrupt the population of three [[Imperial]] [[System]]s into the worship of the [[Chaos Gods]]. However its reign of terror, finally ended when the [[Blood Angels]]' [[Chief Librarian]] [[Marest]], led his [[Chapter]]'s forces to battle against the {{PAGENAME}} Octocalvariae and its damned followers. At the war's end, the {{PAGENAME}}Octocalvariae's followers were dead at the Blood Angels' hands, but the Chapter discovered the Xenos itself was unkillable. The {{PAGENAME}}Octocalvariae's corrupt nature healed any wound dealt to it and only at great cost, were the Blood Angels able to capture and bind the Xenos. Marest himself was mortally wounded in battle with the Xenos, but before he was put within a life saving Sarcophagus, he ordered that a prison be constructed that could hold the {{PAGENAME}}Octocalvariae. Named the '''Vault of Marest''', it was constructed beneath the Blood Angels' [[Fortress Monastery]] and has held the {{PAGENAME}}Octocalvariae, which has had no access to food or water, for three thousand years. After its imprisonment, the Blood Angels have tried various ways to kill the {{PAGENAME}}Octocalvariae, but each has ended in failure; as have attempts to discover what Xenos species, the heavily mutated creature was spawned from. All the while, the {{PAGENAME}} Octocalvariae laments the deaths of its followers and vows it will one day be free.{{Fn|1}}

During the Blood Angels preparation to face an [[Devastation of Baal|invasion]] by [[Hive Fleet Leviathan]], [[Mephiston]] interrogated the {{PAGENAME}}Octocalvariae; to determine if his psychic vision of the [[Bloodthirster]] [[Ka'Bandha]] invading [[Baal]] as well, was true. The Xenos was known to be a prophet of incredible accuracy, but it only offered to help in exchange for its freedom. However, Mephiston did not require its cooperation and used his immense psychic powers to forcibly delve into the {{PAGENAME}}Octocalvariae's mind. Each of the Xenos' many eyes could see into the [[Realm of Chaos]] and Mephiston used them to locate Ka'Bandha and saw that the Bloodthirster was trying to emerge from the Warp and invade Baal. When the Bloodthirster saw Mephiston gazing upon it, Ka'Bandha gave a roar that severed the Blood Angel's connection to the {{PAGENAME}}Octocalvariae. The Xenos then laughed and said it had foreseen that Ka'Bandha would one day kill Mephiston and the Blood Angel's soul would join the Bloodthirster's hordes as they brought down the Imperium. Mephiston denied this, but before he left the {{PAGENAME}}Octocalvariae's cell, the Xenos claimed that the darkness within the Blood Angel would one day make them allies.{{Fn|1}}