How realistic is it to shop for echoing weapon? I just started to run larzuk for some echoing weapon for my barb, but so far haven't seen one yet, despite several berserker's have showed up already. What's the chance a echoing weapon would show up in his invertory? Or would I be better off to just go around and kill stuff? Does it more likely to show up on certain kind of weapons, or all of them are same?