In this world everyone has magic, but the more you use it the more you corrupt and become a monster. Like if you overuse your magic you'll transform and go on a rampage. You can do special training to increase how much magic you can use, maybe everyone has a preset amount of spells they can use a day, or amount of mana that only refills once a day or something. Then there could be super OP spells, but using any of them would automatically corrupt you and turn you into a monster.
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Idea Book
RandomThese are my ideas, and I may do votes on which one to write. If you really like an idea and really want the story written for it, just go ahead and comment that ok A check mark will mean that it's been used and/or being done/worked on If anyone wa...