Faerzress

"Faerzress is a magical radiation only found in the Underdark, a remnant of the forces that shaped the Underdark itself. Some refer to it as liquid chaos, letting such non-sensical descriptions ascribed to a magical gas cloud further emphasize the radical, unpredictable nature of the Faerzress. All I know for certain, is that when I stepped in to the chaotic magic, I came out with not two eyes, but three." - from the annals of time.

History

A patch of this can be found outside the Nestle Nook in the Spider Lands underdark.