Doom is really only needed if you play orb blizz
You play a standard blizzard build, you either choose to max cold mastery or orb
If you max orb and use doom, you lose a lot of damage, you end up doing like 11k blizz instead of 15k
Orb does like 1.1k

You do 1.1k orb and 11k blizz
or you spec mine and do 15.5k blizz
Glacial Spike does 3.5k

Orb really is not that good and the build is overall slower than if you would just aoe freeze entire groups with a glacial that travels faster and does 3 times more, and pop other groups with 15k blizzards
Sure holy freeze aura is cool but everything is already frozen when u play cold sorc

This post was edited by ahyp on Jun 29 2026 10:02am

Doom is pointless. You already have - enemy cold resist from cold mastery

If you want to do it for fun then go for it

cold mastery suffers the 1/5 penalty on sundered monsters... doom does not and gives a full -60%

doom gives more cold pen than mastery vs immunes

Ah my mistake

someone correct me if im wrong, but i think this is a good summary...
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

is my math right?

if im not wrong, this really shows how powerful -% to enemy res really is, since 15k is a significant increase over 10k for blizzard sheet damage and seems to deal less dmg vs sundered monsters

i went back to maxroll, and i can actually get -300% enemy cold res with doom, i forgot to cast the battle command buff from cta for 1 more skill point to cold mastery. ahyp had his battle command buff on.
ahyps fathom build could also get more sheet damage from blizzard with a full inventory of cold skillers. but the general consensus already was that doom does better versus cold immunes.

This post was edited by C4NTWO on Jun 30 2026 02:04pm

Highest dps on cold immunes

Doom
3/20 circ 2 facet incl the ancients
2/20 sorc ammy
Ormus 3 blizz 15 cold
4 facet shield
Arach
Trangs
Soj
Opalvein
Cold 15%dmg sunder

Insight, cure merc (too much sacrificed to use infinity imo for 17%dmg increase)

Max blizz and synergy, max frozen orb. Cold mastery does very little 1 pt is 1% dmg.

Kinda still sucks though against cold immunes on p8 tbh. Definitely the worst of light, fire and cold.

That is correct, you will do slightly more damage to cold immunes
Doom rolls 40 to 60 on the cold res (Ohm Lo Cham) so you need a perfect roll to do slightly more damage against cold immunes
you will do much less against high HP non immunes like heralds or p8 content
Chaos for example, you're gonna do slightly more damage against finger mages and far less against every other mob
Against a cold immune herald pack you will be better but only in that instance and not by much
really imo the only use case for doom is for playing orb/blizz, but its an inferior spec imo

This post was edited by ahyp on Jul 1 2026 04:14am