Darker Quori.
Not all Quori take to the dreaming wholly, for others have become 'tainted' by some dreamers' nightmares - taking to fully embodying the dark, deranged, and nightmarish. These Quori then gain a lust for the dark and insane, or even lack thereof. Traveling beyond Lopais Zuenos across the Astral Seas and even tempering with other planes beyond, these Quoris seek to instill madness, hate, and negative emotions - themselves being drawn to such places such as the Shadowfell and Negative Plane in pursuit of feeding off these addicting energies. Wherever they feed leaves 'tears' and 'holes'. Many of the material plane call these Ghost Circles, unknowingly finding the residual scraps of where one of these Oscura Quori have feasted. Other races, such as Unknown, Drow, and Darkling Elders make use of these circles as unstable portals. Only a very few from these races have ever successfully captured a Quori to do deranged magical experimentations to try unlocking such dark secrets.