Angel of the Ice

Like any religion, the Congregation has heretics to persecute. Separate caves hold a smaller community of dissidents led by the Angel of the Ice. This fallen Celestial claims, to have been sent to the Chasm in order to reclaim it from Hell and build a gateway to the higher realms, preparatory to ushering in a vast army to cleanse all of the lower planes. It is just as deluded as the Congregation, dwelling before a mirror-like wall of ice on which it has scratched out a vastly complex diagram that it says holds the secret to the movements and future of the planes
Created for the fifth edition of 'Chains of Asmodeus' 9 levels of hell D&D guild book