A bloom of spectral tentacles descend from a gaunt, pallid torso.   Spectral wings emerge from its back, paddling ghostly light as a rotten glowing sphere where its head should be, is surrounded by a bleak necrotic aura.   From one the of Alin homeworlds, the Xivvian Wights are undead remnants of a long extinct race that once dwelt in the skies on giant biological dirgibles.   They dwell in the highest reaches of the atmosphere by day, and descend at night seeking victims on the surface.   Typically encountered in swarms, they can also travel on land, albeit very slowly.   There are some among the Alin who can control and direct them, though largely they exist at the edge of Alin civilisation, at the bow or edge of Alin activity.