Disembodied

To cast one's mind out amongst the outer planes is the dream of many an arcane spellcaster. In recent memory, none have come closer to that dubious honour than the lost city of Ulmyr's Gate. Founded by a group of ambitious wizards, Ulmyr's Gate boasted free study for all mages who sought sanctuary within its walls and its Great College quickly became a lodestone for mages of every stripe from across the empire. However, one night one of the founding mages of Ulmyr's Gate attempted a massive conjuration ritual intended to part the veil and create a permanent portal to the Ethereal Plane. It didn't work, instead their magic caused a massive rift in the very fabric of reality, and in an instant the entire city tipped into the void between worlds. The entire population was presumed dead, the Arcanist Inquisition argued against the hubris of those tampering in things man was not meant to know, and life in the Empire moved on. Years later, stories surfaced of strange people being sighted in the region where Ulmyr's Gate once stood. These people seemed oddly blurred or indistinct, and some reports said they vanished right in front of witnesses' eyes. Gradually it became clear that these poor souls were the survivors of the Ethereal Rift, now trapped between worlds and trying to retain their tenuous grasp on the Material Plane.
Things to Note:

• The Disembodied are so new, most people don't even know of their existence, as such they have no place outside of the ruins of Ulmyr's Gate to live openly.
• It's hard to know what someone's reaction to a Disembodied would be, no doubt curiosity for arcane practitioners. Perhaps fear or suspicion for others.