I can never work out if Kulthea is a high or low magic setting. There are a lot of uber-powerful people around, and some powerful items, but magic doesn't seem to be prevalent at all levels of cultures as it is in many D&D (most editions) settings. I've read a few AD&D 1st/2nd Edition citybooks again recently, and the sheer amount of everyday magic in many of them is vastly greater than any Shadow World culture I've seen.