When Matt first started doing research he found that the Welsh had a sword of power connected with Arthur called Caliburn and the Britons had the more widely know blade Excalibur. Most believe that this is two different names for the same sword. In the story, Matt has established that they are not the same blade and that there is a third one called Draconis. The three swords make up a trinity of power with Caliburn being the sword of purity (good), Excalibur being the sword of the land (neutral) and Draconis being the sword of darkness (evil). The differences between the blades play a major part in the ongoing story.