Create a dark and mysterious figure standing in a desolate rocky landscape at night. The figure is cloaked in flowing, tattered black robes and wears a plague doctor's mask with glowing, piercing eyes. In one hand, the figure conjures a glowing green, ethereal flame, casting an eerie light that contrasts against the surrounding shadows. The atmosphere should be ominous and foreboding, with deep greens and blacks dominating the color palette, and jagged, craggy rock formations in the background