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Jul 8 2026 07:19pm
Eh, I tested both using mid-grade gear and some leftovers my pvp blizzer wasn't using, and at least with the 1 pt cold mastery build I found doom outperforms fathom. At least in the zones I was running where cold immune high hp fuckers like the throne room ghouls dwell. -59 doom and 34/-5 fathom.

running nightwings doom vmagi spirit arach magefists and maras. I think BiS would be swap vmagi for blizz ormus and maras for a 2/10 ammy. Facets/new jewel in every slot ofc.


In bis gear doom does 11.2k blizzard
Fathom does 15.5k

They both do -200 against non immunes

Against cold immunes the doom will do a bit more. But what mobs are cold immunes? Not many strong ones. Of course you may encounter a harald cold immune cold enchanted magic resistant where doom might be better, but that’s going to happen less than 5% of the time
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Jul 8 2026 07:38pm
spearladies and ghouls if you are doing a5, cold immune knights in chaos as well. And -200 for both is only if you max cold mastery with either. With doom you can leave cold mastery at 1 point and use your spare points to make frozen orb a lot stronger, or even max tk to go es. I am not sure if cold mastery is worth maxing for pvm due to the sunder effect.

This post was edited by Gilgameshed on Jul 8 2026 07:39pm
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Jul 9 2026 01:52am
spearladies and ghouls if you are doing a5, cold immune knights in chaos as well. And -200 for both is only if you max cold mastery with either. With doom you can leave cold mastery at 1 point and use your spare points to make frozen orb a lot stronger, or even max tk to go es. I am not sure if cold mastery is worth maxing for pvm due to the sunder effect.


It's not gonna be -200 for both since cold mastery gets 1/5 penalty against immunes, which will translate only to -1% for every soft point. With good roll on doom, sunder and a facet the resist of an immune mob should go slightly negative, we're talking like up to -10% approx.

Also why magefist not Trang gloves?
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Jul 9 2026 02:23am
It's not gonna be -200 for both since cold mastery gets 1/5 penalty against immunes, which will translate only to -1% for every soft point. With good roll on doom, sunder and a facet the resist of an immune mob should go slightly negative, we're talking like up to -10% approx.

Also why magefist not Trang gloves?


yea -200 on paper is different once you reduce cold mastery to -1% per point vs immunes. This is why doom is so much better now.

I like magefists because I run es for mine and I like the mana regen. Cold resist isn't really an issue. It doesn't make much of a difference which one either way coz warmth.

This post was edited by Gilgameshed on Jul 9 2026 02:23am
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Jul 9 2026 03:16am
It's not gonna be -200 for both since cold mastery gets 1/5 penalty against immunes, which will translate only to -1% for every soft point. With good roll on doom, sunder and a facet the resist of an immune mob should go slightly negative, we're talking like up to -10% approx.

Also why magefist not Trang gloves?


spearladies and ghouls if you are doing a5, cold immune knights in chaos as well. And -200 for both is only if you max cold mastery with either. With doom you can leave cold mastery at 1 point and use your spare points to make frozen orb a lot stronger, or even max tk to go es. I am not sure if cold mastery is worth maxing for pvm due to the sunder effect.


Already discussed in this thread
https://forums.d2jsp.org/topic.php?t=109720697&f=148&o=20

Quote
here im comparing ahyps fathom build to mine with doom
no infinity on either build and both builds using a +15% cold skill dmg sunder.

fathom
+85% cold skill dmg / -230% enemy cold res (-210% coming from cold mastery) - versus non cold immune
+85% cold skill dmg / -62% enemy cold res (210% / 5 = 42% + the remaining 20%) - versus cold immune

doom
+35% cold skill dmg / -295% enemy cold res (-230% coming from cold mastery) - versus non cold immune
+35% cold skill dmg / -111% enemy cold res (230% / 5 = 46% + the remaining 65%) - versus cold immune

fathom has 15k blizz
doom has 10k blizz

sundered monster has 95% cold res
reduced to 33% res with fathom (95% - 62%) , therefore 15k blizzard x 0.66 = 9900dmg
reduced to -16% res with doom (95% - 111%) , therefore 10k blizzard x 1.16 = 11600dmg



10k damage to immunes with fathom
12k with doom

31k damage to non immunes with fathom
20k damage to non immunes with doom

You want 10k/31k and not 12k/20k

Math is a little off but not enought to be non-illustrative
You do gaina little more damage against cold immunes, you are till killing p8 tz96 finger mages fast either way, but in the case of heralds for instance

slight damage increase to cold immune herald packs
big damage decrease to everything else

This post was edited by ahyp on Jul 9 2026 03:31am
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Jul 9 2026 03:31am
Already discussed in this thread
https://forums.d2jsp.org/topic.php?t=109720697&f=148&o=20




10k damage to immunes with fathom
12k with doom

31k damage to non immunes with fathom
20k damage to non immunes with doom

You want 10k/31k and not 12k/20k


Thanks for pointing that out, gonna take in consideration.
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Jul 9 2026 03:34am
Thanks for pointing that out, gonna take in consideration.


https://maxroll.gg/d2/d2planner/3ugcdw0h

You can close the gap a bit more maybe if you use nightwings and doom
If you wanna play with orb use doom
If not use fathom imo.

Ive tried both and I wanted orb/doom to be better but its not. Can just use glacial spike
Also doing a 7k damage ice blast slaps pretty hard

% damage is tricky, there is diminishing returns, thats why for example a griff with -resist only matters for nova sorc cause they get 500% damage from light mastery, where the damage+ % is more important for a javazon

But all things considered, resist capping, damage reduction, mf% thats a very balanced build with almost the most damage the sorc can do

This post was edited by ahyp on Jul 9 2026 03:36am
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Jul 9 2026 06:42am
infinity still better for cold immune monster but not necessary okay to use if you have one. otherwise insight works fine


Nobody uses infinity on a cold sorc.
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Jul 9 2026 08:03am
Both
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Jul 9 2026 08:34am
Thanks for pointing that out, gonna take in consideration.


i think the next logical question here is how many monsters in the game are actually cold imune? 20%?

im slowly being convinced fathom is better.

doom makes you kill cold imunes slightly faster, but how frequently does that occur and are you actually quicker with runs if youre even more op versus all other mobs that arent cold imune?
i got my hands on a junk fathom and even with a bad roll, its quite good. i have yet to get a turbo facet, but thats next on the list.

and if you can play without insight, infinity will only have you deal more dmg, your call...

This post was edited by C4NTWO on Jul 9 2026 08:38am
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