Ultima's Bane is a legendary greatsword with a sleek, elongated blade that tapers to a sharp point, featuring intricate engravings of ancient runes along its length. The blade emits a faint, ethereal glow, shifting between hues of deep blue and violet, symbolizing its immense magical power. The hilt is wrapped in dark leather, adorned with silver filigree and a large, glowing crystal embedded in the pommel, serving as the weapon's power source.