I, the Night Wanderer

Once he became the Night God, he would patrol the sky and slay demons from then on. Wait, I'm just an ordinary person. Can I teach you a few spells to get rid of demons and defend the Tao? What, in order to learn magic, you have to do tasks to earn merit? If you don't have merit, you can't learn magic, and if you don't have magic, how can you fight monsters? Are you sure you are a god and not a cheat?