Worldmind

-The exact capabilities of the Worldminds are unknown; however, we have been able to ascertain that they were components in the direct attack on Nurgle launched by the Asterii, somehow channeling the souls of an entire race of Xenos into an "Ember" shard fired at the heart of the God of Pestilence.

-The Worldmind, like the Cathedral, is powered by harnessing the energies of a warp entity; this particular warp entity appears to be an ascended incarnation of the so-called Sixth, the Asterii that sought to create a new arm of the Curia and was corrupted by Nurgle.