Exarian

Exarian is a legendary sword in Diablo III. It requires character level 31 to drop.

It is one of the few weapons with innate Critical Hit Damage bonus.

Trivia

 * The sword seems to be the equivalent of Excalibur, as per its description hearkening to Arthurian legend.
 * This, or at least a very similar sword is used by Lord Wynton in battle.