11 months of "Destiny" and my first Gjallarhorn came from Xur. Then I received another Gjallarhorn the following Nightfall. (RNG is a dick!). Wow, Gjallarhorn is overpowered. 2 in the tube. Tracking. Proximity detonation. Secondary "wolfpack" rounds. Good blast radius, velocity, reload speed. Gjallarhorn is everything you want in a rocket launcher, and does 2x damage of anything else in the game. OMG, how much easier has this game been for players who found Gjallarhorn in the first month?Because bosses go down 2x quicker, there's 2x less chance of failure in high level activitie. Aggressive tracking makes Gjallarhorn equally useful in PvP. This weapon is so over powered it is nothing less than a colossal mistake. But that is not a reason to make Gjallarhorn obsolete. In other words, 2 wrongs don't make a right.