Zaisuthra

Zaisuthra is a craftworld that fled the Fall of the Aeldari and developed within the webway rather than on any named system or in any named segmentum. It did not follow the Path, worshipped the dead gods other than Cegorach and Ynnead, and was said to resist Slaanesh through a shared mind; it has been associated with the Gate of Malice and the Tomb of Eldanesh, and no coordinates are recorded for it.

Accounts differ on the craftworld’s rediscovery. One, set in the forty-second millennium, holds that Eldrad Ulthran and Iyanna Arienal told Yvraine of its existence, and that her subsequent expedition with Iyanden forces found genestealer corruption there and reached the Tomb of Eldanesh, without placing Eldrad in the fighting. The other holds that Eldrad travelled there with Yvraine and a Saim-Hann warhost in search of the last Cronesword, a search that failed.