Enormous ghoulish cosmic entity with horror features in dark fantasy style

Prompt

Retro Dark fantasy image of an enormous ghoulish cosmic entity, not completely shrouded by darkness but reveling some horror fic facial features and a body made up of something from a galaxy, standing in a wide open medieval field with neon castles in the background, a fiery storm in the sky, burning trees in the foreground, with a majestic knight on a spectral horse gazing upon the giant Redraw