Eye of Cthulhu, ancient, mysterious, glowing yellow-green iris, vertical pupil, intricate tentacle-like eyelids, ornate golden frame, mystical runes etched, eerie green glow, dimly lit, atmospheric mist, Lovecraftian horror, dark fantasy, detailed textures, worn leather-bound tomes, ancient artifacts, creepy candles, forbidden knowledge, dim red lighting, cinematic composition, high contrast, shallow depth of field.