Nothing. I spent the first year being vulnerable to long range attacks from warlocks and hunters. Now that I have something that allows me to get a long range kill there's all this complaining. Really!? And don't give me the invulnerable craps, I get killed all the time while using HoS and have killed other titans who had theirs active. Learn to get around it, that's what I did and I sucks at PvP.