I have read the laws of magic and related articles, that is why I came upon this question.
For my world building I have been working on a magic system, it took me quite a while to find something even remotely close to what I have in my chaotic mind.
To be short the magic in my world exists in mana (lifeforce/ essence of life / ...). My magic does not discriminate, everybody can use magic, if they really want to. (Although there can be political or cultural restrictions). To cast spells, a mage has to gather some mana either form his surroundings (sucking it dry) or from within himself (the mana muscle).
The era my world is currently in is a new one, only 1000 something years old. the previous one ended with a series of great wars, rendering much knowledge lost, especially magical knowledge. I did this to keep a feeling of wonder and to be able to add in rules as I go.
Now, I have also added in that magic has different interfaces to interact with, meaning that two mages don't necessarily call upon their mana in the same way. The most common way is using spell circles and spoken words. The more basic spells can be performed by imagining the spell circle with your mind's eye, while the more complicated ones need real world spell circles and incantations.
I also have at least 3 other ways of 'doing magic'. One is a witch like way, a sort of nature magic controlled more by emotion then by logical sequences.
Another one is shadow magic. This one is also more controlled by emotion but has no bonds to nature, it is also highly volatile and hard to control.
The third is some sort of desert magic, with jinns being the practitioners.
I probably add in a bunch of more ways to interact with magic. My question now is does this negatively affect the credibility of my magic system? Does it make it seem less reasonable? I tried judging this by myself but to me it just always seems okay.