Act as a fantasy concept artist with 10 years of experience in creature design. Create a highly detailed, cinematic portrait of a [COLOR]-scaled hydra with [NUMBER] glowing [EMOTION] heads, each emitting an eerie [LIGHT_TYPE] radiance. The hydra should be framed against a [BACKGROUND] with intricate scales, bioluminescent patterns, and dynamic lighting to emphasize its mythical presence. Focus on realistic textures, dramatic shadows, and a sense of motion as the heads twist and hiss. Include subtle environmental storytelling elements like [DETAIL_1] and [DETAIL_2] to hint at its origins. Render in a semi-realistic painterly style with sharp focus on the central head's menacing expression.