Realistic digital painting of a mysterious shadowy figure standing in a cavern made entirely of colorful, glowing crystals. The figure is dressed in dark, flowing robes, face obscured by a hood. Crystals emit soft, warm light in various shades of blue, green, purple, and pink, casting intricate patterns and shadows on the cave walls. The figure holds a glowing crystal staff. Detailed, smooth, high contrast, dramatic lighting, artstation, concept art, cinematic, intricate details, sharp focus, fantasy, epic, fantasy novel cover art, illustration, wide angle, artbook, wallpaper, splash art, promo art, mystical atmosphere