Prompt: In an enchanted underground river, a siren's melody flows through the caverns, her voice resonating with magical potency. Surrounded by bioluminescent flora and mystical crystals, she embodies the essence of dark fantasy. The artwork, influenced by John Howe, features dramatic split-lighting, casting long, haunting shadows. The surrounding underground world, a blend of Durand's and Aivazovsky's styles, adds a layer of mysterious allure.

Negative: blurry, noisy, grain, low quality, bright, cheerful, unlit, cartoonish.