Heroic warrior facing ancient blue dragon in mystical cave

Breathtaking epic fantasy scene in a grand mystical cave: A colossal ancient blue dragon with shimmering scales and glowing amber eyes faces a lone heroic warrior. The warrior raises a radiant golden sword that shines with powerful magic. Intense dramatic lighting, volumetric god rays, mystical atmosphere, ancient stone carvings and floating embers in the air, ultra realistic, photorealistic, cinematic masterpiece, 8k