Hey, this is a TheoryCraft build centered around %Damage buffs and Earthquake. The idea of the build is to activate as many %damage buffs, corral a decent stack of demons, and drop a huge Earthquake on them. I don't think it will be a dominating solo build, perhaps decent if a little dangerous/slow. I do however think it has potential for group play, and could possibly be a sick Nephalem Valor farming build.
At the core of things are Earthquake, Battle Rage(Marauder's Rage), Berserker's Rage, Brawler and a beefy weapon(what barb build would be completely with out one of those!). So for the sake of framing and also so someone who understands the math behind damage can come and critique this, let's give ourselves a 500 DPS weapon with 1APS. Decent, not completely ideal, but certainly easy math!
So (I hope) damage for Earthquake with a full stack of %damage buffs comes out like:
Actual damage = 500 * 20 * 2.11 = 21100/8 seconds (~2638DPS)
I am no expert on how the damage formula works, how STR factors into this, and exactly how the %damage buffs work. I am mostly just interested in seeing the 2000% weapon damage of Earthquake buffed up huge. Even if bonuses are additive, resulting in 20 * 1.85 instead of 20 * 2.11, I still think this is pretty strong.
So what about the rest of the skills? I'll go into them, and provided Earthquake and %damage have synergy like I am assuming, most of the TheoryCrafting/improving/critique should be directed at these!
Cleave (Gathering Storm):
Since this build invites/demands both rage generation and at least a few demons right up in the barbs face I'm including this skill mostly as utility. The short duration snare is equal parts escape, setup and tempo depending on how much danger you are in.
Furious Charge (Merciless Assault):
Main uses I see for Merciless Assault FC here are breaking up really dangerous packs with the knockback and finishing/escaping after dropping a Payload. Obviously as a rage generator it's useful, and Merciless Assault is chosen over other runes since after a Payload is dropped, or while getting to max Fury, or just if things are scary as hell the shorter cooldown will allow better tempo control.
I originally had Best Served Cold here, but Dots (and thus Earthquake?) don't crit, apparently. Provocation provides the highest chance you'll get to activate revenge, which is nice for damage but really more about getting some mitigation from the %life gain per target hit. If Revenge is limited to PPM then I would say Vengeance is Mine is completely superior.
Ancient Spear (Harpoon):
Fury and setup. Pretty much useful to activate Brawler, Berserker Rage, and then drop the Payload. Not much utility here, but it'll shine for cherry picking demons that need to get the quakes.
Boon of Bul-Kathos (Passive):
Questionable? With the gimmick/joy of this build being dropping huge Earthquakes, this passive lets you do that 21% more. Or with The Mountain's Call Earthquake, it lets you do it 24% more. Yay.
Things other classes can do that have really great synergy with this:
- Breaking Wave Crippling Wave (10% more damage, melee cone)
- Forbidden Palace Inner Sanctuary (10% more damage, a little tricky to use?)
- Exploding Palm The Flesh is Weak (12% more damage on single target)
- Cyclone Strike (pulls in dudes so you can drop a Payload, very situational)
- Overawe Mantra of Conviction (24-48% more damage, this can be a huge boon to a Payload)
- Guiding Light (passive, 16% more damage)
- Jinx Hex (20% more damage, a bit random?)
- Paranoia Mass Confusion (20% more damage)
- Big Bad Voodoo Slam Dance (30% more damage)
- Bait The Trap Caltrops (10% crit, very situation/useless)
- Valley of Death (aoe 12% more damage)
- Slow Time Time Warp (20% more damage in AoE)