siege of a medieval castle in winter while two great armies face each other fighting below with banners and flags, catapults throw stones at the castle destroying its stone walls, heavy snow storm, fantasy, medieval, fire, explosions and grey smoke here and there, a dragon is lightly seen flying through the sky and throwing fire through its jaws half covered by clouds of smoke and fog, trending on artstation, detailed oil on canvas painting by greg rutkowski and raoul vitale