For me I have never been a huge fan of complex fantasy with bizarre worlds and rules for magic.
Since I am a fantasy writer I build off of things that people already understand in places they are familiar with. My fantasy books take place here on earth. Right off people know how gravity works, that the air is breathable, familiarity with weather patterns, ETC etc etc.
When my characters use “magic” I approach this in the same way I approach my world building, by using things people can relate to: Science, weather phenomenon’s and religious miracles.
Let me touch briefly on religious miracles for all you with raised eyebrows.
In the Old Testament when Moses raised his staff and parted the Red Sea was that magic or a miracle?
In the New Testament Jesus Christ raised people from the dead was that magic or a miracle?
In the Book of Mormon when Nephi stretched out his hand and shocked his brothers was he a wizard or a prophet?
When Gandhi fasted for twenty-one days … miracle?
When Peter Strudwick ran a marathon WITHOUT FEET, miracle or magic?
What about when someone is given days to live and years later they are alive and well, miracle or magic?
People hear amazing true stories all the time. For me, as an author, I want to give people something to believe in. I want people to read my books and feel like they can see, hear and accomplish miraculous things too.