A jack of all trades sword-except it's on fire. What's not to like? Not only does it serve as a permanent light source, the sword will also burn enemies on contact, providing one of the few sources of unblockable, unresistable hardly resistible damage in the game. The roundness and the lightness are strong together, and they can easily be wielded in one hand, and since they aren't artifacts, can be cloned, meaning you only have to focus on one, then make another rocking flaming valpurium sword+10 (wait...)