“Archmagi Don’t Seek Easy Paths” is a fantastic novel by Kirill Teslenok, the second book in the eponymous cycle. Genres: action fantasy, humorous fantasy. The Archmage Paracelsus realizes that his native planet won’t be enough to contain all his Greatness. So he decides to make the Moon happy with his presence as well. He encounters an unknown, highly developed civilization equally advanced in both technologies and magic. They are “very happy” to have a guest—because even without him, they have more than enough problems… But the archmage isn’t an archmage if he doesn’t take it upon himself to restore order.
For modest (or not so modest) compensation. Even if they didn’t ask him about it… After all, real heroes don’t wait—they take initiative! And let the “lunatics” just try not to appreciate his services!