This is not a Mageblood build. This is not a mirror tier build. This is not even a bossing build. This is a speed mapping build. We recover up to 4k life and ES every 5 seconds from Feast of Flesh. It can run any map mod. This build isn't a glass cannon. We are looking at 58k EHP for the 49m variant.

Why would anyone need 49m DoT DPS for mapping? Because we can.

Hype aside, many people think of Cold DoT as an excellent league-starter, but few have considered Cold DoT as an end-game mapper. I think that Devouring Diadem Cold DoT is one of the best speed mappers at the 2div to 70div range. It provides very competitive DoT DPS and EHP for the mapping playstyle.

Mapping Playstyle:

Run around with Vaal Cold Snap. When VCS is on cooldown, tap creeping frost and go (no point casting multiple times as this is a DoT build).

Vortex is automatically casted on left click.

For bosses, cast your curses and cold snap in addition to the above.

How clearing a 0-60% Deli map on ~10m DoT DPS should look like: https://youtu.be/i2lLU9w4nPw

Pick your budget and EHP preference (pinnacle boss setting in POB):

1. 35-40d Higher DPS Variant (25.7m DoT DPS 43k EHP): https://pobb.in/nSHa4qX4xpNu
2. 50-60d Higher EHP Variant - highly recommended for beginners (19.2m DoT DPS, 83k EHP): https://pobb.in/jWaa0sxBti51
3. 60-70d Higher DPS Variant (36.7m DoT DPS 52k EHP): https://pobb.in/XNYa_2bSJ0cr
4. 70-80d Higher DPS Variant (41.1m DoT DPS 59k EHP): https://pobb.in/7OBXERcJbZcD
5. 100-130d Higher DPS Variant (48.9m DoT DPS 58k EHP): https://pastebin.com/6JLsCGxM

Gameplay video featuring builds 3 and 4: https://youtu.be/TSYJaALKWtA

Interview featuring build 1: https://youtu.be/cezFGN1lb6o

Items and gems:

I could write a 10,000 word reddit post on what items to acquire and why, but the essay has already been written here (I am the OP): https://www.pathofexile.com/forum/view-thread/3362183

I'll give you the summary:

Helmet: Devouring Diadem helmet for insane recovery and reservation. It also allows us to run all map mods. Get a curse effectiveness anoint as it benefits all DoT damage sources.

Auras: Devouring Diadem, combined with one 2% mana reservation jewel, will allow us to run 6 auras for good defense and damage: Malevolence, Grace, Determination, Tempest Shield, Defiance Banner and Hatred (divine blessing).

Chest (important): The chest is a major source of gem levels. Budget version is a +4 gem level chest (explained here: https://youtu.be/jpIUj5Uzoa4). EHP version is SOTL w/o detrimental keystone. DPS pushing version is Dialla's Malefaction in combination with our +4 chest tech for a total of +8 gem levels.

Chest gem links: Vortex - Creeping Frost - Awakened Controlled Destruction - Awakened Ele Focus (lvl 5 gives +1) - Awakened Swift Affliction - Empower (lvl 4)

Rings: Mark of the Shaper with catalysts, combined with an Elder Ring for over 90% spell damage boost.

Belt: Coward's Legacy for 30% more damage on Pain Attunement (Vulnerability is mitigated by watcher's eye)

Jewels: Unaffected by vulnerability Watchers' eye to mitigate the belt, Frigid Wake Forbidden Jewel Set for 15% more damage and other stats, 2% mana reservation jewel for Defiance Banner

Weapon and Shield: I recommend using POB to search for pieces that boost your damage (on using POB to search for pieces: https://youtu.be/cezFGN1lb6o?t=1146) (on the best crucible trees for CDoT: https://youtu.be/mrKqn_Dk2U4)

Gloves: Implicits are CDoT multiplier and cold exposure. Prioritise life and resistances. Get damage if possible.

Boots: Legacy of the fury for insane map clear. Alternatively, rare boots with onslaught+non-damage ailments+scorched ground

Amulet: Anoint Ash Frost Storm. Craft a non-damaging ailments line. Get Cold DoT damage lines and life.

Atlas: Supplication and Syncretism (shrines)

I'll check this post daily for the next week or so. I'm also happy to answer any Cold DoT questions based off any guide.

If you are asking a question from another guide, it will be highly beneficial if you provide a link to that guide so that I have an idea of what you are working towards.