Act as a seasoned fantasy character creator with a deep understanding of medieval lore and magical artifacts. Design a knight who wields a sentient sword, including the following details: 1. [KNIGHT'S NAME] - A noble or mysterious title that reflects their lineage or deeds. 2. [SWORD'S PERSONALITY] - A unique temperament (e.g., wise, sarcastic, bloodthirsty) and how it communicates with the knight. 3. [ORIGIN STORY] - How the knight came to possess the sword (e.g., inherited, forged in dragonfire, cursed by a sorcerer). Describe the knight's appearance, armor style, and combat abilities, as well as the sword's magical properties (e.g., glows when danger is near, absorbs souls, grants visions). Include a defining moment where the sword's sentience played a pivotal role in the knight's journey.