illithid, mind flayer, psychic powers, tentacled face, sinister expression, dark purple skin, leather robe, telekinesis, casting spell, glowing eyes, eerie, underground lair, bioluminescent fungi, damp cavern walls, stalactites, stalagmites, ominous atmosphere, 3/4 view, dramatic lighting, high contrast, fantasy setting, horror theme, detailed texture, metallic staff, intricate patterns on robe, slimy skin texture, close-up on tentacles, action pose, dynamic composition, wide-angle lens effect.