The Necromancer's First Step. Volume 4

In 90 years, I mastered healing so thoroughly that I managed to create copies of my own consciousness, practically not growing older—and become the youngest archmage. But everything good eventually comes to an end: the dead invaded us. I had to sacrifice myself to close the portal from which they appeared. I hated them with all my soul, but fate decided to mock me: I was reborn in a world where healing is part of necromancy!