Ailments (& their chance to proc) are independent of the element the skill does. If you have % chance to ignite a cold skill will proc an ignite.
Flat added spell damage is modified by the spell’s added damage effectiveness. Fireball has 125% added damage effectiveness, so +10 fire spell damage gets added to fireball as 10*1.25 = 12.5 fire damage.
Thank you for the kind words. I see Llama8 has already answered your questions, but I’ll just expand a little further on that first question.
So say you have the Lightning Blast (LB) skill and take the ‘Volatile Lightning’ node within it that adds shock chance to LB. Also, lets say you have gear that adds shock chance. So your LB hits will use the combined shock chance of the skill and the gear.
Now lets say you take the ‘Supercharged Floes’ node that converts LB to cold.
This node only states that it converts the skills’ shock nodes to chill. So the shock chance node of LB will be converted to chill while the shock chance on your gear will remain as shock chance. So your LB hits will both chill and shock the enemies.
So now we’ll use a second example that will convert that shock chance. If you take the skill Surge and it’s ‘Flaming Surge’ node you’ll notice that it says it converts ‘all sources’ of shock chance to ignite chance.
So, in this example, any shock chance from the skill and your gear (passives, etc) will be converted to ignite chance…which goes back to the original quote “unless stated otherwise”, and this is one of those times.
Hey @AndrewTilley!
Recently I stumbled upon some questions regarding ailment damage and the scaling with skills.
In this guide I couldn’t find info about that particular topic (did I miss it?)
From memory it is this:
If a skill applies an ailment like bleed, the bleed damage is scaling with attributes that also scale the skills damage. So for Forge Strike, every bleed stack I apply with that skill will also have increased damage 4% for every point in strength I have. This is also stated in the wiki, but not here or in the ingame guide.
Now I think I remember seeing it mentioned that also damage modifiers of skills (that do not specify a hit) scale ailment damage as well. This means any “Skill X does more damage” nodes also scale the ailment damage applied with that skill.
Is this correct?
I hesitate to answer questions regarding that because I’m not 100% sure.
Maybe we could also add the correct mechanic to the guide.
Cheers mate!
Yes, that is correct, I’ve been saying it for some time now (after the devs mentioned it on discord)…
Yeah, there’s a great series of comments on Discord regarding this subject (which is what I assume @Llama8 is also referencing):
Discord_User
I was under the impression ailment damage is completely separate from the damage that applied it? But does the ailment damage actually scale with damage increases to the base ability?
Reimerh QArts
The damage of the ailment isn’t affected by how much damage the hit/ability dealt. Only if there are nodes inside a skill tree that says “Fireball deals X% more damage”, then ailments applied by Fireball will gain the damage modifiers of that node as well.
Llama8
When did ailments proc’d by a skill get modified by skill damage from within the skill tree?
Reimerh QArts
That’s always been the case I believe. It’s the same as when Intelligence increases the damage of Fireball, by default, Intelligence will also increase ignite damage, applied by Fireball.
Mike_Weicker
You almost have to think of the Fireball as a character with stats. When you cast Fireball you pass along your stats to it. So when Fireball creates an ailment (ignite), it has those same stats. If you have increased fire damage, the Fireball has increased fire damage so when it ignites something, that ignite deals increased damage.
Discord_User
Will spell damage boost only Fireball damage or ignite damage of Fireball too?
Reimerh QArts
Ignite isn’t a spell, so it won’t get affected by spell damage modifiers.
Intelligence is a generic modifier, so it will affect all parts of the Fireball’s damage. Spell damage only affects spell damage, which doesn’t include ignite.
- Generic damage modifiers will affect the fire damage of both Fireball and Ignites by Fireball.
- Fire damage modifiers will also affect both parts.
But yes, I’ve certainly considered adding this information to this game guide. I was hoping it would eventually get included in the in-game guide so I could just copy it. 
Hi, first off, thanks for the awesome job!
Secondly, could you explain (or just tell me) how much Block Effectiveness i need to cap out my block damage mitigation against lvl 100 enemies? I tried your formula but I can’t seem to get it to work (math is not my strongest suit).
5k block effectiveness is 70% mitigation and 6k is 73.7% that’s about as high you’ll get.
Ok, thank you 
Thank you. Also, much of this guide is directly taken from the in-game Game Guide (including the formulas) which can be accessed by pressing the [G] key.
Beyond what FoE has already said, you can visit this community run website [by Tunk] to visually see what your block mitigation will be at differing area level’s and block effectiveness amounts. It’s an excellent resource.
thank you very much, this was a great help
Updated with all patch changes, including all images. It’s mostly been up-to-date for a while now, minus the Arena section, but that’s finally been completed as well.
Hey, thank for this amazing compilation.
I found an error in 6.2:
This is not true. There were some dicussion on the discord about experiences players made and what Mike said. As far as I know, the result is:
The damage per second of a single ailment is not changed when increasing its duration.
This makes a big difference compared to the statement that the damgedoes not change. If the total damage would be constant a duration increase wouldn’t have any effect on damage dealt in an infinite fight besides for poison where the damage profits from the more stacks of shred which are inherent to poison.
In practive a duration increase extends an ailment keeping the damage per second constant. There are no breakpoints as fas as I know and in the end duration increase is similar to a more multiplier in infinite (or at least long enough) fights.
Yeah, that was my experience when I did some testing on it.
Yeah, I also did so many test by now that I can definitely say that it works like this. Even implementing it in this way into my simulations it shows the result which are expected if the interaction happens in the described way. Otherwise my calculations would be off by a factor of higher than 2 which is easily recognizable with 200k dot ticks.
Good catch. It appears that section of the GG was updated sometime between patch 0.8.2f and 0.8.2i and not reflected in those patch notes.
It used to say:
Changing the duration of an ailment that deals damage does not affect how much total damage that ailment will deal.
But now says:
Changing the duration of an ailment that deals damage affects the total amount of damage it will deal, but does not affect damage per second (DPS).
Thanks for the correction. I’ve updated that section with the above, and that appears to be the only change made to the Game Guide in those hotfixes.
This is something i got a little confused on and is something i think should be added: how %damage dealt mana works.
I tried doing some math on my own and i think i got it figured out but I need someone else to look over it.
The number are just a test. Basically i want to know the largest hit i can take, and whether i need more life or mana. Again probably useful to add to the main compendium.
https://imgur.com/ZIEzNtC
I just wanted to play a game! 
Should that read 10% reduced ?
Probably, since that’s what the game says.