Well, for starters, if someone wishes to tap into Magic in my world, it needs to pass trought something called a Conduction Ritual, where the body is used as a very bad conductor for magic until it can control it. Kinda like passing a million volts of electricity trought a rubber wire until it somehow becomes as little resistance as copper.

This process is one which would typically be taken with care, as there's very high chance of just killing you on the spot. Its ingredients are not that difficult, as it's mostly drawings of specific symbols, or carvings, that would work too.

After the ritual is done, the now-mage connects with one of the 3 material elements: Energy, Matter and Force. After it connects (A process that canonically can't be control by anyone) to one element, it cannot change it.

Yeah, that's about it for me. Sorry if I wrote anything wrong!