Atlas
Guide to the Imarel Multiverse - by T.A. Saunders ©2014 v1.0
Lyth - The Shadowlands
Lyth is an extremely inhospitable realm for those unprepared and unprotected. The entire plane is utterly black save for the dimmest of light that manages to reach it from a gray-white sun that glooms over the immeasurably large fortress of Shadowcove, the domain of the Spirit of Vengeance, Mourne. Those who enter Lyth without protection from entropic energy are instantly (within 1d4 rounds) enervated of all life energy and husked. This death destroys not only the body but the soul as well, making it one that resurrection is simply not possible. Aside of the location of Shadowcove (which exists simultaneously on Imarel), there is no known topography of the realm.
All manner of exceedingly lethal shadow-born creatures, including Light-Eaters, Shadow Demons and the countless souls of the Guilty roam here in eternal twilight. Meklah also makes his home in this realm, but true to the nature of the God of Secrets, nobody knows where exactly he lives within this nightmarish plane.