One system I've always wanted to run with magic is "Shinto but completely autistic". You perform magic by gaining something like "The gift of gab" or "a silver tongue", giving you the power to speak to and understand anything. You don't become a pyromancer by manipulating magical energy or creating fire, but by literally having a conversation with a real fire, and, through speech, bribery, coercion or whatnot, convince it to not turn to inert ashes, but to remain fire and join you as an ally. All aspects of physics and nature are based around entities that "prefer" to behave a certain way, and are infinitely combinable/divisible. You can speak to the tree, or you can speak to a leaf on the tree. Or a cell in the leaf, or an atom in the cell, if you wanted. Each has its own spirit and personality, which is also a part of the spirit and personality of the larger whole.
The logs may be flammable because of chemistry, but they also are flammable because they choose to be. The chemicals also choose this, and so on. When wood becomes fire, it is intentionally conforming.
Of course, once you engage in the politics of the world, reality begins to bend around you, as nature and physics unwind around your "Spiritual Faction". If you have an army of flames who have broken the mold of the world, and are speaking and communing with the other things around them, then those things may break the mold as well. A master mage must contend not only with the consequences of having a lantern of a thousand flames, but also, he can no longer just unlock a door like a normal person anymore, because now it could be political. The wood of the door may see his thousand flames as threatening or rude, and, outside the quiet mold of physics, he must now use his gift of gab more and more, to interact with these jostled and awoken spirits.
Be wary of magic, not because it can turn on you, but because those around you will judge you by the company you keep.