Hi,
maybe i’m blind but what is “damage with burning”? Is it damage to burning enemies? When yes, why is the bonus constant at 60% even if i equip paragon nodes with this wording?
Damage over time does not apply either, right?
Ok, i’m townblind. Bonus is shown outside of town. 
Thx for answering.
Damage with Burning is a buff specific to the Fire DOT effect or Incinerate/Firewall.
Damage to Burning is any damage you deal to targets that have a Burning Damage effect on them. Like you could use Fire Bolt to apply burning and then Chain Lighning to benefit from the Damage to Burning modifier.
Combustion will only receive bonuses from affixes that are worded as “+Damage with Burning”. “+Damage over time” affixes do not work with Combustion even though they do increase the Damage with Burning in the end.
I think only the Tourch glyph buffs Combustion now days.
Figured out and went into depth on what’s wrong with the Combustion tooltip here: Post Patch - Sorc Combustion Key Passive - #18 by Childe-1683
Basically, there are two issues:
The “Damage with Burning” bonus on the character sheet is miscalculating. It’s using the following formula:
[ (DamageOverTime + TorchGlyphBurningDamage) x (100% + Burning Instinct Multiplier) x (100% + Aspect of Conflagration) ] + Burning Instinct Multiplier
So it’s not including Endless Pyre at all, and it’s bizarrely using Burning Instinct both as a multiplier (correct) and as an additive value after multipliers (incorrect).
The Combustion tooltip is also miscalculating. It’s using the following formula:
60% + ( 25% x [ TorchGlyphBurningDamage x (100% + Aspect of Conflagration) + BurningInstinctMultiplier ] )
So it’s ignoring the “Damage Over Time” affix and Amethysts, inheriting the incorrect additive use of Burning Instinct, ignoring Burning Instinct’s actual multiplication, and also ignoring Endless Pyre.
Just did some calculations and found the right numbers, at least according to my character.
I believe that Combustion only benefits from Torch and Burning Instinct. (And an extra bug)
So the numbers on my Combustion are:
If we add the values of Torch (bonus 58.9) and B.I. (bonus 22.5) when they are alone, we get 81.4 . Which is very far from the bonus of 134.3 that we have when both are active.
The difference is 134.3 - 81.4 = 52.9 . This extra value comes from the B.I. node being applied to the Torch Glyph… So if B.I. multiplies the burning damage by 0.9 and we get the Torch bonus of 58.9 and put then together we have 58.9 * 0.9 = 53.01.
The difference between 53.01 and 52.9 is because the Torch bonus is rounded up on the tooltip, in my calculator it match perfectly.
In other words, the combination of Torch and B.I. is double dipping with Combustion. (I assume it is a bug)
I mean…yeah. Doesn’t everyone know. Y’all are amazing. I can not fathom the skill and ability to solve the quandaries in these forums. The dedication is appreciated for sure. It’s like meme.
You: solving what is actually working and what is broken and why
Me: can not decide if I should use Flamethrower or overheat on 2h and amulet. Again thanks
(I know your’s was not actually a question, but I got invested)
I’m not sure how to calculate this.
Flamethrower says X of normal damage, so I guess we just multiply.
Overheating says X increase damage, I imagine that it means (1+X) before multiplying.
If this is the case then Flamethrower in Staff and Overheating in Amulet is 0.9 * 2 * (1+ 1 * 1.5)= 4.5
The other way around gives a total of 4.05.
But now I’m confused, is this the right math?
Damn, I never thought about it… does anyone know how we should calculate these things?
I always did Flamethrower in staff and OH on amulet without any concerns. Untill Roxy switched it up in her incinerate build this season. Since building Fireball I have not ran incinerate. So grateful for armory have most of Lightning spear looking forward to running that again
Both Touch and Flamefeeder glyphs affects combustion.
Not yet, Flamefeeder (damage to burning) will only start counting in Season 8
Combustion is heavily bugged; it’s not scaling with Burning (or Damage over time) affix, but is current scaling with 100% of damage to burning and 25% of damage with burning. The oddity with Burning Instinct instinct is resolved.
Its weird. Watching mekuna video, I see he got 832% at combustion passive.
I just replicated his build in maxroll but I just got 597%
Where the remaining points comes from ?
Did blizzard fixed something theses days that changed it ?
Mekuna video
https://www.youtube.com/watch?v=lMyWNB5KUs4
His build replicated
https://maxroll.gg/d4/planner/eols0007
I watched the video and Combustion is definitely broken. It must be multiplying something somewhere.
He removed Torch Glyph (260%+) and the Combustion lost more than 500%x damage bonus, yeah, definitely broken. If Blizz manage to learn math and apply the formula correctly, the Combustion should go a little over 300%x with every buff and related Glyphs maxed. 800% is way off.
I can’t access the PTR and can’t test this, but my guess is Burning Instinct vs Combustion being wonky again.
The formula from Maxroll must be different from the one in PTR. You will not get the same numbers.
I don’t think this build will be good at launch. Blizz will do something about Combustion, will remove Convulsion from Tempering and will probably nerf some Boss powers.
Also, I’m pretty sure that the Incinerate Enchantment does not trigger the bonus multiplier from Conflagration Aspect (only the explosion).
Literally told you what it was doing. And Incinerate enchantment does trigger the bonus burning.
No doubt they will do the fixes you suggested, however, that’s a bandaid. It no longer matters how you are built. Your entire progression will decided by your boss powers.
Terrible.
Sorry, I had skipped this reply of yours.
Hum… this would explain some of the new weird numbers, but do not explain the difference in the total value of Combustion when the Torch is taken out.
Do you know why the difference is so big?
Haah, I got this one completely wrong and reversed. Like you said, the Incinerate Enchantment does trigger the buff (and the buff persists even after you remove the enchantment, it resets if you cast Incinerate yourself), but I could not make the serpent trigger the explosion.
On the other hand, it seens that any new Burning Effect that you apply can trigger the explosion while your are channeling Incinerate. An easy way to see this is with Hydra, let the Hydra attack the dummy and cast Incinerate into a wall.
I have a strong feeling that I will stop using the Boss Powers after a while (if the powers are more important than the build, then I will pretend I’m in the Eternal Realm)
I always encourage people to read the entire thread, particularly if it’s less then a dozen posts.
I mean, you could totally forego them, and play Eternal for a season. I myself have a strong suspicion we will see heavy revision on the PTR. Boss powers, the nerfs, the scaling.
It’s a friggin mess, borne of incompetence. I have lost all faith in Diablo devs at this point. It’s a bitter pill, for such a tireless advocate of the franchise.
Hehe, it was not on purpose.
I hope so. Otherwise I might as well stay in Eternal and save my silver coins for S9.
The 60-65 Cosmetics for what is essentially the equivalent of $3, is always worth it. Even if it’s nothing special in there. You will not get a better deal on cosmetic items anywhere.
I am still questioning Combustion as well. Aside from the fact it’s doing 1:1 Damage To Burning (a bug, likely) right now, the talent isn’t working as I would expect.
So, it seems to me there are two bugs at play here: The tooltip bug (minor correction) and the current 1: 1 with damage to Burning.
1) Combustion should increase Burning damage by 60 (x), increased by an additional 25% of both your damage with burning and 25% your damage TO burning. **This would give it the correct functionality.** Combustion appears to be global modifier that appears nowhere on your stat sheet, and is only applied specifically to spells that inflict Burning damage.
#2 Separate from Combustion, the Damage over Time affix seems bugged. +Fire % damage does not increase Burning damage, (though it is my understanding it should). There is also a bug that +damage over time cannot reroll with +Vulnerable stats on the same piece of legendary equipment, which would require switching some stat buckets around.
Damage over time, overpower damage, vulnerable damage and critical strike damage are mutually exclusive on any weapon as a stat.
Damage over time increases the Damage with burning but don´t affect the Combustion Calculation. Who knows why !!! Not logic to me.