I wouldn't say "home" is the most accurate definition. [Can you have the It's Complicated status for a world? Sure. Why not. He could make it a thing.] "Place of origin" is perhaps a better descriptor.

[He raises a brow at the offered name. Forgive him (don't), but he's an asshole by nature.] I assume "Wizard" is a title. [In defense of said nature: he's from Earth. The names humanity have been coming up with lately...]