Mightiest of the Great Old Ones, Xor'urr (🔊) was an ancient being of darkness and death whose powers made it the most feared of the eldritch deities.
Xor'urr is thought to have arrived on Eamon some 400 millennia ago, the last of the Great Old Ones to reach the world. In both size and shape it resembled a great thunderhead, but composed of ink-black vapor that would instantly kill and decay any living thing it touched. Diffuse near its edges, it slowly thickened in its interior to some awful unseen mass at its core, and it could move across landscapes like a storm.
Despite its strength, Xor'urr was not immune to the cosmic rhythms that drove the Cycle of Ruin and like the other old gods sank into torpidity for long periods in caverns deep below the world, awakening periodically to take stock of life on the surface. During these periods the wakeful energy of Xor'urr and the other old gods would animate the undead, driving them into a frenzy of destruction that would lay waste to the world's civilizations.
During the Eighth Ruin in 2704 BA, the Talus Assembly harnessed planar energies to manipulate the Cycle and prematurely return the Great Old Ones to dormancy, sparing Eamon from another Ruin. Furious, Xor'urr spent centuries dreaming of vengeance and ultimately — like the Assembly — discovered its own means of influencing the effects of the Cycle. With the aid of the T'Zzanti it held itself and the other Great Old Ones hidden through the time of the Ninth Ruin, then in 1 BA attacked the unsuspecting world, intent on becoming the unchallenged and ever-wakened ruler of Eamon.
Anharos, king of Aevinn, proved to be the undoing of the Xor'urr's machinations: armed with the god-given Diamond of Purity he and his allies laid waste to the undead hordes, and when the Great Old Ones themselves emerged to confront the alliance, Anharos convinced the new gods to intercede. Alaxar, Terza, and their pantheon engaged the eldritch gods on the Plain of Sarkarm in a battle that shattered the landscape and shook the planet. Lashed by miles-long whips of solar fire wielded by Terza, Xor'urr's defenses were burned away and its squirming black core finally revealed to the incinerating sunlight, annihilating its presence from the Material Plane.
