The Dealkyr War

"The onslaught by this completely alien invader is difficult to imagine. Their effect spreading like a disease across the land itself. Corrupting and changing plants, animals, and those unfortunate enough to be caught by these creatures were changed and mutated into sick perversions of their original form. The Dealkyr must have left complete and horrible destruction in their path, in a way that cannot truly be ever known again, if we are at all fortunate."

by Professor Talaen Toloai of Morgrave University

The daelkyr-a race of immensely powerful beings from Xoriat, the Plane of Madness-invade Eberron. They threaten to overrun the continent but an alliance between the Dhakaani and the Orc Druid sects allows for enough time to be bought to seal the portals to Xoriat and trap any other Dealkyr below ground. This only occurred at great cost to Western Khorvaire and the Dhakaani Empire.