For a cold sorceress with Sunder 70, the best thing is to increase the cold mastery by 20 points. I have it at level 40, which gives me -200% of the enemy's resistance to cold... but I don't know if 100% is enough and it doesn't make a difference because 100% is the maximum... thanks for your opinions.

Cold mastery and conviction from infinity only work at 1/5 effectiveness against sundered immunes.

The best cold sorc build relies on -res from gear, which is fully applied vs sundered.

Here’s an exemple of what’s currently the best blizzOrb build :
https://maxroll.gg/d2/d2planner/6gjm0051

You could swap insight for infinity, but it’s only -17res vs immunes, nothing vs non-immunes because they’re already down to -100.

Against a sundered immunes, res set to a base of 95
You get him down to
95 - 115 (from gear) - (145/5) = -49res
Or -66 with infinity

That’s way more than what you’d get by trying to max cold mastery since its only 1% per skill.
This way you can max orb instead, which is great since now blizz and orb don’t share the same delay like they used to.

Thanks, friend. From what I understand, the maximum is to have Cold Mastery at the level that gives you -145 to enemy resistance, right? The extra points you give in Cold Mastery will be wasted, right?

Nah -145 is just what I get on this build after maxing blizz, orb and all synergies, so the last few remaining points get dumped there at lvl 95+

1 hard point, with +skills
Most -res should come from gear

Doom -60
Monarch 20/-20
Circ 10/-10
Viper 5/-5

Each extra point in cold mastery is only -1% res vs immunes at this point.
Still better than nothing, but that’s why you don’t max it if you have that much -res on gear.

If you don’t build like that, and you use stuff like fanthom and spirit, then yeah you should max cold mastery.

I don't have any of those 4 items, I wear death phantom tal armor with a shaco with cham and spirit

Well then like I said, you may as well play pure blizz, not blizzOrb
Max cold mastery instead, you’ll need it.

Won’t be as good, but that’s the best you can do with that kind of gear.

Thank you very much for your explanation, my friend. You are very kind. I appreciate it very much.


From what you're telling me, I understand that it's better to lower enemy resistance than the percentage of element damage, in an item like the griffon, right?

Yeah, for pvm at least.

For pvp it’s the opposite cuz players can easily stack res so -res is often useless.

But for pvm, -res from gear being fully effective vs sundered immunes, it’s MUCH more dmg than +% dmg

For exemple, using a 20/-25 griff on a nova sorc,
the +20% is only about +1% dmg cuz its applied additionally to your light mastery, not multiplicativelly.
But the way it brings a sundered immunes from 95 to 70 res?
You go from doing 5% of your dmg to doing 30% of your dmg.
That’s a 600% dmg increase in this case.
600% > 1% right?

Okay, buddy, thanks a lot. I'm going to reset my Cold Sorc with a token and I wanted to optimize everything possible. I only play PVM, so... I'll follow your advice. Thanks a lot, buddy. 20 years ago, everything was simpler when the character wasn't optimized so much, hehehe.

The maxroll link I posted is just how to make the most out of a cold sorc if you really want to min/max this build with high budget.
But you know… at this point there’s better builds worth more that kind of fgs investments.

A blizz sorc is normally a build chosen for ladder start or at least to mf on a budget.
But if you have the kind of budget that can get you the gear I listed, tbh you should invest into a nova sorc for density destroying, or a fire sorc for elite/boss sniping, or something else than a sorc

And if you play on p1, your build is probably already good enough ^^