Naturally Magical

Almost everything in this world has some kind of magical affinity to it, and that definitely includes the people. Working with the GM, each PC will be able to have a unique type of magic to them, regardless of what class they have picked. Regular magic rules will apply to them (a lot of the time) which means that INT WIS and CHA (rarely CON but that can be discussed depending on the type of magic) will be used for spellcasting. If your character decides to use CON as their spellcasting modifier, they will never become proficient in it (unless you're a Sent).
Each player character will start to develop their own unique magic at level 2. Beyond that, they'll be able to either upgrade their existing magic, or further develop it each 2nd level (the first is at level 2, then 4, 6, 8, 10, etc...) The type of magic can be something that already exists in regular D&D. You just gain the ability to cast it a certain number of times per long rest. You can also tweak or rework what already exists. You can either keep it simple and pick an already established D&D spell and change it somewhat or improve it. Like increased range, damage, change damage type, add a damage type, those kinds of things. Then you can make it more complicated like sacrificing some of the spell's original effects to make another effect more powerful. Like making a ranged spell a touch spell, but increased damage or from a regular action into a bonus action. For example one I made was that as a bonus action, the character may make their next spell attack do an extra 2 damage. But they can only use this 3 times per short or long rest. That isn't exactly a level one unique spell, but it isn't very powerful either. Then there's completely unique where you come up with something completely new and develop it as you grow in level.
While an exception can be made, generally speaking once you start to devote yourself to a certain type of magic your character will have to stick to that type of magic. You won't be able to 'switch out' existing magic/spells with different ones once you have learned them. You may branch out into a different types of magic and learn something entirely different, but you'll only be able to do so the next time you can learn a unique magic and spell (level up). You'll also likely have to start learning fairly weak spells if the magic type is completely different (basically the equivalent of learning a new discipline/skill).
As mentioned before, everyone will also get a reskill token in case you don't know what to do now, or just want something different later on. But you only get one of those, so make it count.

Type

Metaphysical, Arcane