I believe I just found a huge glitch that denies you all three swords. I have all three classes at lvl 40 and got my Legendary swords on two of them. I just got one of them to 280+ and unlocked all nodes, but had it on the third character. I got to the point where I could get the third characters sword, but when I talked to Lord Shaxx it skipped the selection processes, and went on to "A Sword Reforged". I sure hope this gets fixed, and they send me my Void Edge. :(