Interestingly enough, this sort of thing is almost exactly what Chao used for magic in the source manga I took her from. She had spell sigils tattooed all over her body that forced magic through her to allow her to cast, at the cost of it being an extreme strain on her system and causing her severe pain. And when overused in the midst of a magic duel with her ancestor trying to overpower one another's A-class spells, the sigils exploded violently and cost her the battle.
Chris Ganale | R'tahz Tia | Yuuna Akashi | Chao Lingshen | Seno Nakakami | L'dran Cresnoble | Garon Crayson