Lunas howl shiny version with double perks with magnificent howl can two tap forever. How it works is you get a precision kill first and then swap the perk off magnificent howl and back again you two tap till you die. This is super broken and has been exploited since it dropped. I know bungie doesn't care because they would've done something by now if they did but this is bs so take this knowledge and exploit it till they do something about it.