Valluta

The Valluta is a weapon mentioned by Knight Bernhard during the Quiet Before the Swarm Quest. It is appearantly either a real or a fairytale weapon. This is what he says to Commodore Matthias: "Sir, what about the Valluta? I've heard some of the older knights telling tales of it. They said it was able to destroy pests on sight, just like squashing a bug with your toe."

- Knight Bernhard

However, Commodore Matthias says it's just a dream old Void Knights have so that one day they may lay down their arms, and it's not real.

It is possible this weapon will be the reward of a future Void Knight quest