A dark demonic sigil featuring a central glowing red eye, surrounded by fiery runes and shadowy tendrils against a fiery, smoky background.

A dark demonic royal sigil, shaped as a cracked black volcanic circle with glowing lava fissures. In the center, a large living obsidian eye with a fiery red-orange iris and a narrow demonic slit pupil, staring directly at the viewer. Three sharp black stone horns emerge from the circle – one upward, two diagonally outward – glowing with red-hot cracks. Infernal runes glow in blood-red along the edge of the circle, pulsing like a heartbeat and emitting tiny sparks. Shadowy smoke tendrils float around the sigil, occasionally forming ghostly shapes like claws, jaws, or twisted faces before dissolving. Inside the circle, demonic flames burn in deep red, orange, violet, and black, licking upwards as if alive. Highly detailed, dark fantasy, powerful, terrifying, metallic engraving style, dramatic lighting, ultra high resolution. See more