Dark Sun: The Scorched World of Athas
At the eastern end of the Great Ivory Plain lies a bleak region known to nearby nomads as the Beastbarrens. Few people have reason to come this way, and those who do rarely linger long before retreating, for the Beastbarrens is a cursed land. Here, an unknown, baleful power warps desert predators into freakish monstrosities; they sprout extra limbs, their hands or paws grow into daggerlike claws, scaly armor covers their skin, and worse. New terrors wander out of the Beastbarrens every few days or weeks to fall on caravans and outposts in the eastern reaches of the Ivory Triangle.