Hellgate War

The Hellgate War
The nation of Karros, using foul sorcery, summons forth an army of fiends to aid them. They attack Dragonheart and Varathi Empire, and successfully push forward on all fronts. Hordes of humanoids from the Titan's Razor Mountains are enslaved or bribed to help Karros. More distant powers, such as Harriyya, Ellidar, and Antea, are periodically attacked by lightning raids launched by Karros, keeping them from lending assistance to Dragonheart or the Empire. The war ends with the Cataclysm occurs.