Draconic Abominations

For all their power, Dragons are not invulnerable. They can be injured, can be killed, and they can be corrupted.   A dragon that becomes infected with Void energy and cannot find any way to cleanse themself will usually retreat from the World to try to limit the spread of the corruption through their bond with their territory. They will usually choose to seek this seclusion in either the Underhollows or the Grim Plain.   Within the Underhollows, a tainted dragon is drawn to find and try to destroy one of the seals laid on The Abyss, and to build a new lair centred on a point of abyssal intrusion. This slowly corrodes their form, leaving them swollen with power, scales sapped of colour and breath transformed to the stuff of nightmares. These are the deep dragons, vile terrors of the Underhollows.   Those that make their way to the Grim Plain at least escape their corruption, which is drained out by the nature of the plane. and replaced by the stasis and inertia native to the Bleak Mirror. These shadow dragons exhale corroding darkness, shun all light and are terrible indeed, but worse can happen should such a creature die in the Grim Plain. A shadow dragon that dies in the Plain rises again as a death dragon, a horrifying undead being with the form of the shadow dragon's blackened bones, bound together with coiling Necrosis. Shadow dragons will kill any living thong that enters its lair, but a death dragon will hunt every living thing within its sensory range.   Given their incredible lifespan, very few dragons would ever seek undeath, but there are exceptions. A handful have become power hungry and raged against their own ends. Embracing dark power and the teachings of Lacaga, they bind their life to their bones and to an anchoring artefact to become a dracolich, an undead manifestation of the living dragon's will, rage and appetite.   A virtuous dragon may alternatively choose a form of undeath in order to continue fulfilling a duty. These dragons become hollow dragons, their form animated by radiant energy.   Both of these involve a choice, but in dragon held by guilt or regret may find emself bound to become a dragonwraith, a ghostly remnant of their living self.   Beyond rare are Draconic aberrations and constructs. There is one recorded instance of a mind flayer elder brain - the hive mind known as Second-Tier Architect of Ruination - overwhelming a dragon's defences to force a kind of ceremorphosis upon em. The resulting creature, Rylesh'na the Breath of Ruin, was one of the greatest horrors of the Colossus War.   Rare, but not unique, eyedrakes are horrid fusions of beholder and dragon, born from the dreams of those Beholders who manage to survive a rivalry with a dragon long enough to conceive of it.   Void dragons are mockeries of the draconic form, bound in plates of voidsteel and fuelled by the horrific power of the Void itself.   Only slightly less appalling, dragon golems are constructs built from dragon corpses and animated by Magic.