Defiling magic withers verdant areas, dissolving plants into a fine powder and creating extended areas of lifeless ash. Defiled vegetation is a primary source of Athas’s vast silt deposits.
Effect: Over time, wind blows the ash into lowlands where it gathers to form silt pools. On occasion, squares of settled ash form in areas the wind rarely reaches.
Usage: Ash fields serve as a chilling reminder of the devastation wrought by defiling magic. They can be found in canyons and other sheltered areas.
Published in Dark Sun Creature Catalog, page(s) 134.