I have single handily come up with the best idea for a weapon. It can work either as an exotic sniper or rocket launcher, rocket launcher would be best but Gjallahorn probably will not be beaten. It should be a unicorn design and when fired leaves a rainbow in the air for a little while. Not to mention a ability could go hand in hand with that where the gun does all three types of damage, and I don't do not have any idea for an other abilities should be on it. Easily would be the most hilarious gun in the game, please keep bumping this post up one so hopefully Bungie itself will read it.