Do DOT's stack?

Yes, that’s not true.
Each cast makes its own new dmg.
If you have 10 firewalls by enchantment etc. among the enemies also the 10 firewalls doing damage and not only one…

This server slam I set out to test more abilities and pretty much every ability I tested the dots stacked and floor effects overlapped and provided full damage.

The interesting thing is that when multiple dots are on the enemy the tick damage is added up and displayed as a single number. Dots that do under 1 damage do not display damage text but do still apply damage, so this implies that damage calculations include decimal points.

When the boss is staggered, they count as under the effect of all CC. So during that time your effects will work.

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So, based on your findings: let’s say I have a firebolt at level 20 that inflicts 20 damage on impact with an additional 140 damage over 8 seconds as burn. I hit an enemy with no resistances or weaknesses (no crits/lucky hits) with two firebolts one second apart (I’m using a staff with no attack speed mods).

What happens? How much damage/second is the target taking as burn, and how long does the effect last?

All I know is flay upgrade makes bleed stack (every direct hit with flay makes enemy take 10% more bleed damage). Which allows you to completely replace an enemy’s health bar with bleed bar, then rupture for the kill.

First instance of damage will display as 17 damage, second tick will show as 35. After the first burn expires the damage will decrease to 17 again on the last tick. Total time of burning is 9 seconds because your second burn is applied 1 second after the first but your first burn will drop off for the last second because it only lasts 8 seconds.

The damage is 17.5 dps per burn but the number is rounded for display purposes and is calculated correctly.

I already read this somewhere as I ran a Werewolf Poison build and had Claw, Rabies and Poison Vines all applying the poison. Every application can be treated like a debuff on the target. For example:

Claw does 42 dmg over 5
Rabies does 350 over 4
Poison does 175 over 2

The damage ticks will kick in on the timer you set when you attacked (1 second after applying each skill) regardless of what the other skills are doing.

So in theory using the above example, Claw Rabies and Poison could all hit within 0.7s of each other but will all apply their own individual damage on their own unique timers. I think for the purposes of the legendary that does 180% poison damage instantly to poisoned targets it would just take the total value of the damage that’s applied to that target that’s already counted as ‘Poison’ and deal up to 180% of that value.

Hope that makes sense.

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Okay, that’s pretty straightforward. Now I just need to figure out how greater fireball interacts with all that burn damage.

Oh, is this confirmed? The only site I could find that mentions it said applications from the same source reset the duration only. Though maybe that means that same cast?

In most games DOTS from the same source / skill does not stack. A re-application of the DOT simply refreshes its duration to its maximum.

Lets say Rend does 100 damage over 5 secs giving a dot of 20 DPS

DOTS Do not stack

  • First application: 20 DPS for 5 secs
  • Second application: No change. Remains 20 DPS for 5 secs. Simply refreshes the duration.

If DOTS Stack

  • First application: 20 DPS for 5 secs
  • Second application: 40 DPS for 4 secs. Last sec is 20 DPS

In most games the above would not hold true. It would make DOT builds tremendously powerful as one can overlay multiple applications. There seems to be some confusion amongst the community with some claiming that it does stack though so it would be good if Blizzard can clarify on this.

The corpse explosion shadow variant that deals DOT as far as I know, doesn’t add up. That’s why I used the normal explosion instead, which was much faster.

Damage numbers exist, so it wasn’t difficult to check. Dropping a second firewall under an enemy should have doubled the damage. It did nothing. Firewall enchant proc on a firewall did not increase damage either.

The only oddity was fire bolt burn increasing slightly after second and third hits, but not doubling the burn damage.

This was the case during the first beta. I haven’t tried since

The only one I can think of that does is Firewall’s burning. Each firewall is a separate burn. I sometimes managed to get 4 under Ashava and even when she moved away I could see 4 separate ticks for 3 more seconds.

Pretty sure separate sources stack damage, stacking one damage types does not

For ex., if you apply burn with say Firewall, and then cast Hydra and start dealing damage with Incinerate, the DoT will “tick” as 3 separate things at a time

IF you apply 2 DoTs from the same kind (Incinerate for ex.) it will not stack (it may increase if DoT damage increases for say channeling like that, but it will not stack)

Firewall is different and each cast does add a new burn. It’s made kind of obvious with its enchantment that can proc 2 firewalls under a burning enemy

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Sure but what I meant to say:

2 Firewalls + Incinerate will stack

Thanks for doing the work!

No, there arent shotgun mechanics, one of the previous beta changed the way firewall worked so no stacked firewalls but you can put layers next to each other and they will deal different instances so a mob big enough could step into 2 or 3 of them provided they stood still which they dont so at most you can deal 2 layers of damage.

I think you are wrong. Tier 2 Ashava was soloable using firewall at the same speed as rogue spamming rapid shot. That just doesn’t seem possible if each cast didn’t do damage. There does seem to be something up with the enchant.

I shouldn’t doubt it if you have tested it fully but I cannot help but think something went wrong. Maybe the damage shown is buggy?

You are correct. And that is why people are upset. In D4, you cannot keep a Frost Sorc out of combat. So, Ice Blades becomes a thing because it is not quite CC; Traps Rogue, in and of itself is not a viable build (but we can play our way). Basically, every single class must take at least one melee skill!?

Depending upon the DoT, CC damage against bosses does not quite work. This does need to be clarified but AoE damage does nothing but Stagger (maybe vulnerable). Single target CC (X applies Stun) may not work as well. So, Poison Trap would not apply Poison to these bosses but Stagger them. Twisting Blades with Poison Imbue would apply Poison.