Hyper-realistic digital illustration with the luminous, intricate detailing of the skeletal, demonic nun with an ethereal glow emanating from fiery eyes, sharp, blood-streaked teeth and fangs, surrounded by spiked, metallic halo and embellished headpiece, contrasting dark shadows and harsh highlights emphasizing the surreal and eerie textures, the background blurred with floating embers and a golden, ominous ambiance, with intricate bone structures and subtle cracks interwoven into surreal, haunting and intimidatingly fine details permeating through the image.