A photorealistic portrait of an ancient skeletal necromancer. The necromancer's skull is cracked and aged, with glowing red eyes deep within the eye sockets. He is draped in tattered, dark robes adorned with arcane symbols and bones. In one hand, he holds a staff made of twisted wood, topped with a glowing crystal. His other hand is raised, surrounded by swirling dark energy. The background is a shadowy, mist-filled crypt, with faint, ghostly figures lingering in the shadows. The image should capture the menacing and mystical aura of the necromancer, with detailed textures on the bones, robes, and magical elements.
