I'm just about to go to the final battle, waiting for next arms day., and I wanted to share some things I found with this quest. I did some searching and found from other sites that after you do the 25 crucible kills and 50 ultras on one character you can transfer all other swords to that character and skip this step of the quest on the other swords. Sadly it was my Titan that I did this on. Being frustrated about void kills for the Titan I found on some site that you can use your sword hilt after it has been drained as an ability kill.