Create an ultra-detailed 3D model of a terrifying, sentient Halloween pumpkin monster. A cracked jack-o’-lantern head glows with ember light, jagged grin flickering from within. Its zombie-like body is made of twisted vines, rotting orange flesh, and dripping black sap. Glowing cracks pulse through its chest as mist swirls around. Posed hunched forward, reaching out with clawed vine hands, under eerie moonlight and fog. Low-angle horror view, cinematic lighting, ultra-realistic textures, wet gloss, matte decay, and glowing amber veins. A haunting, mystical being born from cursed Halloween soil.