Avatar of fire, added fire gem, Chernobogs questions

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Lionguild wrote:

If you use Glacial Hammer you are already converting 100% of your physical damage. The skill gem works BEFORE avatar of fire so it would go.

Nothing = 100% physical
Glacial Hammer = 50% physical / 50% cold
Glacial Hammer + Avatar of Fire = 50% fire / 50% cold (all physical damage is converted) THEN 50% of that cold damage is converted from cold to fire.

Hence why Glacial Hammer without the Cold to Fire support gem is only 75% of physical to fire. Hrimsorrow would not change this.

Good point, I got confused! Thanks for clearing that up.

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I also never said Chernobog was needed for infernal blow, only that I would use it if I wanted to use something other then infernal blow (maybe ground slam).

Hrimsorrow on the other hand COULD be used if I wanted to use said Ground Slam. like I mentioned in my previous post it would convert that last 25% of my physical to cold (after avatar of fire + chernobogs), then half of that cold would get converted back to fire, for a grand total of 87.5% physical to fire.

I think we're pretty much on the same page now. But if you put Cold to Fire on Ground Slam too, that would give you 100% physical to fire. Let me do some quick calculations to see if that would be worth it.

100/87.5 = 1.142857 (1 and 1/7, right?)
Which means that if you use Ground Slam, AoF, Hrimsorrow, and Chernobog's, then a Cold to Fire gem attached to Ground Slam would be equivalent to a 14.3% more damage gem. Not bad, in my opinion.

EDIT: By my calculations (not shown), if you use Hatred and/or otherwise have heavy cold sources, as well as use Chernobog's and Hrimsorrow, you will be putting out more AoE damage than a cold-reliant Infernal Blow or Glacial Hammer build assuming same/similar setup, ignoring IB's corpse explosion effect.

Wow, that was confusing.

So do we know if WED and passives like lava lash work with just any skill that doesn't inherently deal fire damage (frenzy for example) with avatar of fire?

Seems to me the whole reasoning for AoF is predicated on the idea that you can get more damage from fire + WED than normal physical increases.

I couldn't really follow some of the more mathematical posts... But if you still have the original question: I have a AoF marauder build and the added fire gem definitely adds fire damage to my attacks. With the character panel open you can switch out gems/equipment and see how it changes your build. Also, don't remember where I read it but passives calculate last. So increased phsyical, melee, elemental, etc... all add to your total damage which is then converted to 50% fire. Anything that adds %fire damage or %converted to fire damage that is listed on equipment will covert your total phsyical/fire damage before AoF conversion is added. It's not meant to be an OP build where you can deal insane damage. It requires a lot of build specific passives and gear, and in the end game you have a character dealing similar DPS as everyone else just yours is fire damage... It is fun.