You have been choosen to received an artificial Organs transplant as an experiment of Atlas to recreate or mimic the ability to use magic of maidens, since the Fall maiden is Cinder Fall who working for Salem and the Spring Maiden is Raven Branwen who god know her next move is. The experiment successfully, you can now use "magic", although you doesn't have a flare with your aura color emerge around your eyes when they use magic like maiden. But here the twist your body began to slowly lose its functions from the organ’s effects and to some point in the future the artificial organ will done enough damage to your body that is considered life-threatening. Even in the present, using the power too much and overstimulating your artificial organ will cause a strains on your heart, thought take medication can help your body.

You are not using actual "magic", it simply just the usage of dust to mimic the power of Maiden, like using elemental power for attacks, creating elemental weapons from thin air, creating, localized weather change, ect.... it's all dust, not actual magic

Inspired by the story of Hanto "Drop-kick" Karakida a.k.a Kamen Rider Valen