Yasgithiath was a draconic-humanoid abomination created by a ritual performed by members of the Dracohest. The creature's mind was simple and aggressive, and was kept in check by Craxen, who used a pink dragon crystal to control the beast's mind.
Yasgithiath emitted an aura of mind-warping magic that turned affected individuals into worshipers of Xac'huranac. It was destroyed by the Peas in Iron 951.