The Edo Tensei Coffin is a dark, ominous wooden coffin with intricate purple and black markings that glow faintly, symbolizing the forbidden jutsu it represents. The coffin features a slightly curved lid with sharp, angular edges, and the surface is adorned with kanji seals that pulse with a eerie light. The wood appears aged and weathered, with visible cracks and a rough texture, emphasizing its ancient and sinister nature.