World building: A magic system founded in our reality?

Hello! Lately, I have been thinking a lot about a magic system for a tabletop RPG I would like to host in the future. I am starting from scratch, and I am trying to make it somewhat cryptic in the beginning so that players can slowly understand it over the course of many campaigns.

So far, I've looked through some systems already used in many fantasy worlds: elemental magic, dark and light, gravity, etc. It's cool, but not all of them are really explainable. If a person from our world was randomly transported to that universe, they wouldn't be able to properly handle the magic.

Therefore, I was thinking that the universe in which the action takes place has some form of new particle that is much more reactive to the environment. For example, drawing a rune with a material that attracts this new particle, you could perform various spells. However, this would be somewhat limiting and would suck the fun out of the action (yes, let me draw this huge magic circle during a fight with an ogre).

What magic systems have you read/seen and liked? How do you think those could be improved?