That sounds like a great idea!
-wyi Also that is honestly fair. Setting limits should definitely be the first thing to do when creating a world. There are always going to be rules. If something breaks those rules then how do you explain that? It can be pretty difficult to.
Speaking of. These are two frames of a new animation I am making. Which is for my "One Year Animation Anniversary Animated Special!!!" Basically it will be my duelists, Neeko and Blip, versing one of the gods in this universe, Kiki.