A medium shot from a low-angle perspective depicts a massive Nidhogg-Tiamat fusion, a primordial chaos dragon, entwined within the cosmic roots of the world tree. This cosmic aberration possesses multiple serpent heads with corpse-eating maws, aggressively gnawing at thick, dark roots that span the scene. The dragon's colossal body is covered in dark scales featuring intricate starry void patterns, blending the identities of the mother of monsters and the world-tree destroyer. The environment is a void existing between primordial chaos and the underworld, filled with floating debris and swirling cosmic mists. The visual style is a hybrid of (sumi-e style:1.4) and (traditional ink wash:1.3), characterized by visible ink brushstrokes, bold and thick cel-shaded outlines, and a stylized 3D render aesthetic with soft cell shading. High-contrast chiaroscuro lighting casts deep shadows and sharp highlights, emphasizing the ancient horror and oppressive atmosphere of the void.