TwoSix
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Makes sense. Is the connection between magic source (item/being) a reciprocal bond, or more of a draining?In previous iterations of the setting (and the one I am using for fiction) Earth is different from the fantasy world in that it does not possess an "arcanosphere" -- that is, there is no magical energy inherent on Earth. That's why we don't have wizard and dragons and stuff. When the refugees flee to Earth, they bring with them magic items and animals, and the only way to cast spells etc is to draw energy from those items and animals. And, yes, "animals" here includes sentient beings of various sorts.
If the general narrative around magic is an "acquire and use up" model, I would lean towards less magical classes being necessary, since the narrative around different branches and styles of magic isn't really the focus.
What about classes like fighter, barbarian, and monk? Are they narrated as being just very skilled, and higher hit points are more "luck and skill" than any sort of supernatural resilience?