Hey, reading this was really interesting! I found the way you constrained the seemingly limitless amount of possibilities for "magic item wielder" into a clean and understandable game really neat. The game itself serves as a great artefact and introduction to solo RPGs!
Because I like this game so much, I'm working on a hack of it that adds an extra artefact, a cyber-pet or robot pet companion similar to Neopets. It'll include a new artefact, some new keepers, and some origins. I'd love to hear any thoughts you have about it! Thanks!