Battle of Helheim's Rise

The final battle between the Acolytes of the Shaytan Aeshma and the forces of Izhura, aided by Jianghu. In the later eighth century, a priestess of The Illuminated, Mai Shuren, made contact with the Nethradin in the Spirit World, and took to research in spirit magic--eventually forming contracts of summoning rites with several, who sought to bridge the gap between the living realm and the spirit world, to conjure their Shaytan in physical form. 
Nuan Yu gained fame for breaching the defenses of the Acolytes and putting an end to their ritual. His spear, Tonbogiri, killed Mai while the Shaytan was in the process of possessing her. 
The Aeshamlytes had 8,000 fighting, and Izhura's forces were at 14,000. Several thousand died.