【How-to】How do you get a dragon longsword

Making a dragon bane longsword requires a bane longsword + 4, 1 draconic visage, and 4,000 progress, granting a total of 4,000 experience. It can be augmented to an augmented dragon bane longsword. While fighting dragons, the dragon bane longsword increases damage by 25%. It does not increase accuracy or hit chance.