A D&D Wizard in DC

Alexzander is your not-so-average nobody. He wakes up, goes to work, comes home, and sleeps. Only the occasional superhero battle breaks his days of mediocracy. Then one day everything changes. Suddenly he gained the ability to cast magic and not just any magic. No, he gained the spells and abilities of a high-level magic caster from D&D. Not only that but he gained the ability to use powerful rituals. However, life won't be easy for Alexzander as old wounds from a past best-forgotten open. ...... This fanfic is a slow burn. So don't expect major plot points to happen quickly. Additionally, this is kind of my " Don't think too hard about it fic", so don't expect a masterpiece. Also, the Cover Pic isn't mine.