Create a highly detailed, 8K portrait of a grimdark lich Skeletor, full-body with horns, sitting on a table. The image should feature a black cloak, be rendered in a 2018 style, and have a photo quality. Incorporate micro details, follow the golden ratio, and achieve a surrealistic and dramatic atmosphere. The output should be in 4K or 8K, with a full-width, mastodon-inspired design.