To Call Upon the Powers of the World - "Magic" in the Jewelsea

I've long disliked the way magic is portrayed in fantasy RPGs, with a neat delineation between "magic" and "mundane." I prefer a vision more accommodating of multiple perspectives, able to accept that there are feats that are outside the experience of some groups yet a part of daily life for others. I've tried to excise mentions of the word at all as I work on the Jewelsea RPG. It's too easy for someone to get the wrong idea about what it means and what it implies. Despite my feelings on magic, I'm still very attracted to the trope of a wizard: someone who uses their great knowledge of the workings of the world to twist it to their advantage, to force the powers of the world to answer their call. I've toyed with and discarded a lot of magic systems, both those found in published rules, on blogs, and of my own design. I didn't want to simply recreate the modern D&D wizard, able to trivially call up a spell in a single combat round that was easily controlled with little cost other than…