Update here, statement. 
I’m not going to pretend that I have much to work with for the amount of time I’ve been absent. Everyone reading this can feel free to immediately disregard almost every post I made here prior to this one.
Just because some people might be notified and thoroughly disappointed if I post some more bullshit about my struggles, here’s how the magic system will work (I promise that this is it)
MAGES
A mage is a person with the ability to use magic. Shocking, I know. As a species, they are supernatural shapeshifters who can manipulate the natural world with their power.
Power
Magic, as I will be calling it, is derived from a force that keeps the universe from disintegrating into a black void of cold gas and nothingness. This force is the dark matter that holds galaxies together, and is present in all matter at differing concentrations. The mage’s body is capable of essentially stealing magical charge from the matter that enters his body and expelling it in a constructive (or destructive) manner. Mages generally source their power from the air by inhaling it.
Magical power when expelled by mages can take on many appearances depending on what it’s doing, what conduit was used to cast it, and its concentration. Generally, at low concentrations, it will appear as a sort of glowy vapor. At moderate concentrations it will appear similar to flames, while at high concentrations it can take on the form of colorful flashes or bolts of light(ning). Sometimes you’ll get a nice mix. The color of a person’s magic is unique to the individual. It is not based on personality but is genetic. It is generally either a mix of the two parents’ colors or a slight variation of the parent whose biological sex matches the mage.
CONDUIT
Most mages, to perform even the most basic expressions of their power, require what’s known as a conduit. Conduits are generally crystals encased in pure metals enchanted to maximize their conductive properties. Through their use, mages are able to express their power more articulately, but, as a consequence, have much more difficulty using their power without it.
Once touched by a mage, the conduit binds to him forever. If taken by an adversary, the conduit will, in the best case for the thief, simply reject their power. Some conduits are known to act on their own when stolen and use the thief’s power against them, either forcefully removing itself from the thief’s possession or by simply killing them outright. A mage with a strong mutual trust in another will be able to use their conduits and vice versa. Mages can actively sense the location of their conduit if they are separated from it.
Shells
The metal casing of a conduit is known as a shell. Any relatively pure element should work, but metals are preferred. The metal chosen has no effect on its efficacy, but metals such as gold, silver or chromium are seen as more prestigious. Non-metallic substances such as wood, bone or even plastic can be used to decorate a shell and will be accepted as part of the conduit. All that a conduit needs in a shell to function is that the shell touches both the core and the mage’s body.
The shape of the shell determines what broad category of magic the conduit excels in. Crowns and diadems excel in combative magic, wands and staffs are ideal for finely articulated and powerful magic, bracelets perform well in motion-related magic (moving things around), and so on. Some weirder shapes exist, such lanterns, which keep an eternal flame of the owner’s color inside and are ideal for forming magic structures as well as producing light using magic.
A list of all shell shapes and functions will be provided at a later date.
Cores
This is where the magic happens. The mineral heart of a conduit is known as a core. Any mineral can be used as a core; I could take a random rock from a creek and it would function as a core if enchanted properly, but the result wouldn’t be a very good conduit. Conduit-grade cores all have unique properties that not only produce more powerful expressions but also boost the efficacy of a specific realm of magic. While a pendant-shaped conduit will excel in magic that involves manipulating ye olde anime elements of any kind, loading that pendant with opal makes it particularly good at controlling water. Some notable cores are ruby and sapphire, your good ol’ fire-and-ice duo; emerald, which increases the user’s ability to mitigate harmful magical effects; diamond, which increases the user’s physical strength; orpiment, which makes the user’s magic more volatile and “overzealous,” as described as one user; amber, which makes the user’s magic slower to use but more potent; and petrified wood, which gives the conduit a powerful green thumb.
If you want to know the specialties of a specific shape or core, I can probably tell you.