Changes

The '''Assault on Sortiarius''' was an attack by the [[Grey Knights]]' [[3rd Brotherhood (Grey Knights)|3rd Brotherhood]] and the [[Dark Angels]]' [[5th Company (Dark Angels)|5th Company]] on the [[Daemon World]] [[Sortiarius]], sometime during the [[Age of the Dark Imperium]].{{Fn|1a}}

The [[Grey Knights]]' [[Prognosticar]]s determined with the [[Speculum Infernus]], that the [[Daemon Primarch]] [[Magnus]] was gathering significant warp power on [[Sortiarius]]. They could not determine, however, what exactly the Daemon Primarch was plotting, so a strike force was gathered to stop Magnus before he succeeded{{Fn|1a}}. In truth, Magnus observed the new [[Psychic Awakening]] and planned to create a psychic beacon to gather [[Psychic]] beings across the galaxy to Sortiarius in order to replenish his numbers. Some of those drawn to Sortiarius would become [[Daemonhost]]s, others sacrifices to Tzeentch. The other aspect of the ritual was to send out a wave of psychic energy that would rapidly accelerate the psychic power and development of any across an entire [[Sector]]. It was merely a preview for Magnus' ultimate plan, which was to lead Humanity's psychic evolution to its fullest potential.{{Fn|1f}}

Due to [[Sortiarius]]' [[Daemon World|nature]], however, [[vox]] contact was impossible, so instead the [[Grey Knights]] made [[psychic]] contact with the [[Dark Angels]] [[Librarian]] [[Baraqiel (Librarian)|Baraqiel]]. They were shocked by what they heard from him, though, as the Dark Angels had succeeded in disrupting the temple's power, but had then begun to escape after [[Arvann Stern|Stern]] told them the ritual had been ended. The [[Brother-Captain]] knew that [[Daemon]]s were behind the duplicity, and informed the Dark Angels that the ritual still continued and the Grey Knights needed their immediate aid to stop it. The Dark Angels were too far away, though, and to reach the Grey Knights in time drastic measures needed to be taken. It was determined by the strike forces' Librarians that a temporary tunnel through the [[warp]], would need to be created in order for the Dark Angels to join the Grey Knights. Though they knew it would cost them their lives{{Fn|1d}}, the Librarians successfully created the warp tunnel before dying as a result. Afterwards, the Grey Knights and Dark Angels fought to reach the ritual site, but were still heavily outnumbered. Stern then knew they would not stop [[Magnus]] in time and ordered his forces to form a [[psychic]] beacon, so that the Grey Knights' [[Strike Cruiser]], [[Purging Sword]] could fire upon their location. Though it killed many of the nearby Dark Angels and Grey Knights, the Purging Sword succeeded in destroying the ritual site and ended Magnus' plot. The surviving members of the strike forces then began evacuating Sortiarius, while under fire from the vengeful [[Thousand Sons]]. Stern, [[Kaldor Draigo]], [[Lazarus (Dark Angels)|Lazarus]] and the strike forces were able to successfully escape the [[Prospero System]], but they had been forced to leave many of the Grey Knights and Dark Angels behind. The thought of what fate awaited those [[Space Marine]]s captured alive by the Thousand Sons on Sortiarius, filled the strike forces' survivors with dread{{Fn|1e}}. The Grey Knights soon sent the [[Castellan Champion]] [[Garran Crowe]], to rescue their lost Brothers.{{Fn|2}}

*1: [[Psychic Awakening: Ritual of the Damned]]:

**{{Endn|1a}}: pgs. 10-11 - Sons of Titan