I’ve read a lot of references to build the world for Last Wizard. A bit ironic, since the main idea is: All Wizards Vanished From Our World, minus one.
A lot of things I must consider: would the world know to miss them? What are the immediate consequences of their disappearance? What about the long-term consequences? Who would miss them? Why should we normals, who have technology on our side, care about them?
A World Without Us by Alan Weisman is fascinating thought experiment of get a sense on what would happen if we, humans, disappeared from the world. I’m reading and re-reading for inspiration and math.