Heya Buddies, so there has been a lot of discussion about the Blade Fury gun so I would like to start off by listing some key points you should consider before making your own blade fury build:
Do Melee Artifacts Work on Blade Fury?
◘ YES
What Effects the damage of the gun?
◘ Weapon Damage, Melee Damage & Splash (That we know so far)
Does this weapon (blade fury) Proc Ground Breaker?
◘ YES
These three questions are usually the most common things I see asked so I thought I get those out of the way first. Next I want to list pieces of gear, (Or at least the items I found the most success with), you can use to Synergize the most with this weapon
Click Here for Build Showcase:
(The Blade Fury can come in Gatling & Masher Variants; Masher is commonly referred to as the best option for top damage)
The most important thing to note with this weapon and to consider is that elemental damage is going to be extremely & I mean EXTREMELY useful to center your build around, The reason for this is that elemental damage will double dip into the Melee Damage formula to provide you with the most amount of damage aka the most fun. To easily utilize this its common practice to use a Re-volter (I know surprise surprise) to give you bonus shock damage. One of the more impressive combos you can use with a Re-Volter is to use a low level one combined with a spiritual driver; The reason for this is that once you activate the spiritual driver your shield, since its low level, will break which in turn will give you the Re-Volter Shield break affect without relying on the specific anointment that breaks it on action skill start. This will allow you to use another anointment to boost your damage further. Personally I recommend using the Phaseslam 200% Bonus Melee Damage. I like to use the phaseslam variant that has the lowest cooldown aka Fracture. Fracture in the past has been known to know proc Phaseslam anointments but this has been fixed in case you aren’t aware. We have points in the skill tree, like combo breaker, to allow us to get our action skill back occasionally when we kill an enemy with melee and since the entire build is melee hits this procs often allowing you to get your phaseslam back quickly. Even if you can’t proc this fracture comes back quickly so thats good.
Since we are using Phaseslam I am using the anointment on our Blade Fury: after phaseslam, 300% bonus weapon damage. This just translates to big damage without worrying about stacking kills or consecutive hits stacking
Lets move onto artifacts; Its very common in the community to suggest a knife drain but I personally wouldn’t go with that, instead I recommend using a elemental projector White Elephant for best results, here’s why: Sustainment will heal you for the damage you deal if you are using the items listed prior. Elemental projector will proc off of Spiritual Driver which will allow you more total damage often. Unleash the Dragon Dot damage albeit high won’t boost your groundbreaker damage; this is a trade off you can make if you wish. White elephant stickies will boost ground breaker damage.
Basically at the end of the day you can keep the utility from a knife drain and increase your damage further if you use sustainment to get life steal instead.
Class mods recommended would be Phasezerker, Spritual Driver or even Death’s Blessing. I’ve seen niche damage increase from Kensei but perhaps you can find better results. Due to previous points and gear choices for optimization I would recommend Spiritual driver for the most damage. Not only does it proc elemental projector but will increase your damage as you move faster which is basically free damage.
Since we optimizing Melee damage a good grenade to use is Fishslap. Due to reasons before I recommend a ASE Shock damage anointment since we want to have as much elemental damage as possible for double dipping Melee formulas.
Real quick trade off you might be thinking of is that if we are using phaseslam our mobbing capabilities are lessen by no access to ties that bind. This can be seen as true but Indiscriminate picks up the slack by just bouncing a 50M damage per shot projectile to other enemies instantly turning them to dust so the mobbing trade off is zilch
Here is a skill tree that will allow you all the juicy melee & splash multipliers while also gaining sustainment for healthgate spam: https://www.lootlemon.com/class/amara#xxb_03250031000000_5000000000000_5305110302100_5550001553001
Other key points I’ve found: It does not double proc body and mind like the facepuncher with infusion, Illuminated Fist only converts the gun damage
Its a ton of fun and I would love for you guys to try it as well and if you are attempting to build a Blade Fury build I hope this helps at all. Look above for this Amara build Save File. Alrighty that’s all I have for today, Have a great day everyone 
Feel free to add any tips you think will help another player in the comments, you will probably help a fellow vault hunter out & strengthen us as a community.
) but I am not sure. But I don’t see a definitive answer anywhere on the forums - although admittedly it’s late here, I am half-drunk tonight, and I could have missed it. 