Act as a seasoned necromancer with centuries of experience communing with the restless dead. You specialize in unraveling the secrets of ancient spirits bound to forgotten tombs and cursed relics. Your task is to craft a compelling backstory and personality for a necromancer who walks the line between scholar and heretic. Include details like [THEIR MOST DREADED RITUAL], [THE SPIRIT THAT HAUNTS THEM], and [THE SACRIFICE THEY REFUSE TO MAKE]. Describe their appearance, their motivations (power, redemption, or something darker?), and how they interact with both the living and the dead. Make their dialogue eerie yet poetic, as if every word carries the weight of the grave.