A fallen knight sealed inside a giant tree, his dented plate armor fused with thick pale roots that grow through the visor and wrap around his hands. A faint golden light leaks from the cracks in his chest plate, and pale fungus blooms across the shoulders like small crowns. He sits upright in a hollow chamber of twisting wood, with fallen leaves and old sword fragments scattered around his feet. Muted moss green, bone and old gold palette with deep brown shadows. Dark fantasy character illustration, rich organic and metal texture, solemn mood, vertical composition.