Clarent

When most mortals think of the infamous name, Clarent, they picture the graceful fall and eventual death of King Arthur Pendragon at the hand of Mordred. A singular piece of carved obsidian, etched and inlaid with miniature quartz crystals, the blade makes for a stark appearance compared to the adornments of the other blades. But the barren appearance doesn't reduce the killing power of, arguably, the second most famous sword in all of history, Clarent.