Desert travellers caught in sandstorms must be wary of inhaling magically-charged sand from the Plains of Purple Dust, lest it start converting their body to magical crystal from the lungs out.
Madcap disease is a poisoning suffered by those who eat chemically altered mushrooms in the Haglands, leading to hallucinations and violence.
The root of the snakeroot plant is widely used across the Sundered Lands as a powerful painkiller.