Now hold on, hold on, i can answer all your question and concern.
Now about the first paragraphs. The short answer is yes.
Now this speak of is not a person, but more of a place where imagination exists at it most powerful. If fallen into the wrong hand, could be disastrous to the entire universe.
Of course, this is just hypothetical. If Disney wanted to do such a big project, they would either do this or something else more inrerest.
And as for the books, i was just clearing thing up for @Imagineer_V. Like i said, the names are just placeholders and the first thing that came to mind was Kingdom Keepers so i just went with that.
And for the record, most of the hero did alot of incredible thing without. Take Anna for example, she climb a high mountain, survived a frozen heart, and stop Hans scheming all without magic.
Even some of villain did alot without magic. The biggest example would have to Scar. He had a fool proof plan and excuted it perfect and nobody i repeat NOBODY had the slightest clue (not even his own family). If it weren’t for the hyenas bouching their job of finishing off Simba, Scar would have gotten away with it. And he did it all without the slightest help from magic.
Now that i say this out loud to you, i just described Scar as a perfect arc villain.
Of course, i don’t work for Disney. So, what the heck do i know?