mystical black dragon emerging from dark cave surrounded by glowing crystals for fantasy art and poster

black dragon emerging dark cave glowing crystals fantasy mystical ethereal vibrant purple blue eyes majestic adventure art design poster book cover elements magic surreal luminous enchanting mythical storybook creature detailed illustration otherworldly scenery powerful aweinspiring mysterious scenic fantastical legend myth folklore imagination world epic tale movie digital high gemstone storytelling supernatural wonder creativity dragons ai generated