The Intangible Instance is a mirror world within Solace. It is the place of origin of all kryssids and the cemetery of the arcane. The Instance is geographically identical to Solace but exists within a separate layer of space-time, and is inhabited only by remnant souls devoid of living vessels and consciouses that manifested in spiritual form. Despite its resemblance with its living counterpart the Intangible Instance is quite literally inverted from Solace, as drought nurtures the land and rain willows even the brightest flower; night lasts longer than day and death wears the guise of life, thus the 'mirror world' term.
Although the land appears the same, changes brought by the living are nonexistent; there is a total absence of known settlements and no trace of humanity's expansion, but the realm is by no means empty. Its territory is teeming with scattered souls, fragments of beings once alive, and ever-evolving creatures that consume one another in a race for evolution and survival. There is a possibility that sentient souls and creatures exist, which implies the existence of undead communities gathering to survive the harsh environment.
The sky in this world holds a shade of mint green during the day and royal blue at night, with ever-shifting glowing pink mists believed to be vapors formed by minuscule soul fragments. As there are no bodies of water, lakes are chasms of varied depths, and oceans are gigantic sand dunes and deep dry valleys. Known weathers include bright golden mists, pitch black rains, fog-filled skies, and storms of firefly-esque orange specks. Because the Intangible Instance cannot be accessed through any means barring specific, rare, and extremely powerful spells, what little is known is based on ancient texts kept by a secretive sect of mages said to have access to the mirror world.
Several people throughout history have claimed to possess memories of a place befitting the Instance's description. Though not much was given in the way of details, all claims coincided at the color of the sky, the absence of known settlements, and the presence of unidentified fauna. This phenomenon, the creation cycle of the kryssids, and the strange cases of people thought dead being found after several days, all suggest the Intangible Instance may hold the key to eternal life, or at the very least, a never-ending cycle of revival affecting a small percentage of the population.