A Destiny gamer got this weapon after he completed the Vault of Glass on hard. And it completely destroys people and it’s not even arguable. It’s an exotic called Vex Mythoclast.
Bungie has announced that there will be some changes to the loot system and you will be able to get legendaries and exotics easily, so if you ever get this weapon, you better keep it.
The other gun that comes close is the Suros which is on sale with Xur: The Legend of Nine right now. Here’s his location in case you have 23 strange coins to purchase it.
The gun is most definitely getting a nerf but since very few people will be able to get it, Bungie might let it stay for a longer time.
Check out the impressive video below and how he destroys most people with the gun.