Don't just invent locations "out of thin air." Connect them to existing lore to add depth:
: Explore how the actions of the descendants might actually matter to or change the fate of their ancestors . 5. Writing Techniques for Depth Descendants
: Instead of a generic dome, perhaps it's a "Guardian of Kindness" spell that strips magic but allows aging, explaining why the villains are still alive. Don't just invent locations "out of thin air