epic wide angle eldritch horror fantasy art, a gigantic ancient Great Old One monstrosity, slug-like body, nightmarish creature with tentacles and a maw at one end, crashing through a battlefield full of armored demons, in the style of kathrin longhurst, cyan and dark red, richard s. johnson, zoomed out intensity, gothcore, jay anacleto, pseudo-lovecraftian epic depiction, wide angle shot, motion, vast scale --niji 6 --ar 16:9