Create a hyper-realistic Dungeons & Dragons-style dragon. The dragon should be massive, ancient, and majestic, with intricate scales that shimmer in shades of deep crimson and obsidian. Its wings are vast and leathery, with visible veins and clawed tips. The eyes glow with a mystical golden hue, and its horns are twisted and jagged like volcanic rock. The environment is a dark, stormy mountain peak with lightning illuminating the sky behind it. The dragon is roaring, with fire and smoke emerging from its mouth. Style: cinematic, ultra-detailed, photorealistic fantasy concept art