The Obsidian Cleaver is a formidable weapon with a broad, curved blade made from dark, polished obsidian that gleams with a subtle purple hue under light. The blade's edge is razor-sharp, with a slightly serrated design near the base for added lethality. The hilt is wrapped in dark leather, secured with metallic bands that feature intricate, glowing runes, enhancing its mystical and menacing appearance.