Diablo 4 Season 15 PTR test server is now live, and I've noticed a build quietly gaining popularity: Warlock's Infernal Breath build. This build was mentioned before, and it seemed rather weak.
However, in Season 15 PTR, the development team appears to have carefully planned to buff Infernal Breath, increasing its base damage and the power of key variants.
The most significant highlight is the passive skill Explosive Death, which now deals more damage, gains a stronger single-hit bonus, and has a larger area of effect. This gives Warlock's Infernal Breath build new life, allowing it to clear areas explosively.
This article will teach you how to build Warlock's Infernal Breath in Diablo 4 Season 15 PTR, preparing you for Season 15 release.

Choosing a Path - Key Upgrades
The strength of this build lies in its versatility, allowing players to choose different development paths based on their playstyle in Diablo 4 Season 15 PTR.
Heavy Impact Damage
This upgrade is particularly beneficial for players seeking burst damage. It allows your Infernal Breath to deal up to 2,000%[x] extra damage on its first hit. However, the trade-off is that the skill no longer has piercing effects, making it ideal for single-target damage or as an initial attack against groups of enemies.
Demonic Breath
If you prefer a channeled melee playstyle, this upgrade transforms you into a Demonform. In Demonform, your breath attacks deal 35% more damage on each hit, and with Volatility talent, their Dominance Energy cost is reduced by 50%. This is a tankier, more sustained damage build.
Abyssal Torrent
Abyssal Torrent reforges your skill, allowing you to summon a large demon that lasts for 15 seconds and can execute cursed enemies. Then, you can cast this skill again, aiming and attacking the enemy three times, each time dealing 150% damage, achieving a powerful combination of summoning and direct control.
Damage Source - Support Passive Skills
In Diablo 4 Season 15 PTR, the base skills of Warlock's Infernal Breath build aren't key; the passive nodes that support Infernal Breath are crucial to taking it from good to insane. You must allocate skill points here to unlock the full potential of this build.
Ramping Damage
This is your most important source of damage multipliers. Every time Infernal Breath hits an enemy, that enemy permanently gains 1%[x] of Infernal Breath damage, stacking up to 25%[x]. For bosses, this equates to a permanent and unconditional 25% damage bonus after a few seconds of channeling. So, be sure to prioritize this talent point.
Lesser Demon Volatility
This passive skill synergizes perfectly with your other skills. When you cast Infernal Breath, it infuses Lesser Demon skills with Volatility effect, granting them a 1-second Volatility effect on each hit, lasting 5 seconds.
This talent allows you to easily maintain maximum Volatility stacks on demons, increasing their damage and unlocking the reduced cost of Demonic Breath upgrades. It transforms the original single-skill build into a fluid rotation-based DPS system.
Expensive Damage
This is the ultimate choice for players, but currently not very suitable for Diablo 4 newbies. While it increases skill damage by an astonishing 140%[x], it also doubles Dominance cost. You'll also need some specific gear. If you can manage Dominance issue, your damage output against world bosses or high-level dungeon bosses will be unmatched.
Key Items
To complete Warlock's Infernal Breath build, you'll need several specific Diablo 4 Items, as follows:
Scepter of the Three
This unique staff allows you to occasionally unleash a weaker second breath attack on nearby random enemies during Infernal Breath channeling. This effectively doubles your mob clearing speed and provides more attack opportunities for your damage-stacking passive. If you find this item, build your build around it immediately.
Harlequin Crest
Harlequin Crest is an excellent choice for building Warlock's Infernal Breath. It reduces damage taken by 20% and grants +4 to all your abilities.
Anathema of the Primes
When you use your core abilities to strike enemies, each ability's damage is increased by x [15 - 20%]. It also makes it easier to maintain Demon Form.
Attribute Priorities
Primary Attribute
Intelligence: This is your primary damage bonus. Every point of Intelligence increases your ability damage. Prioritize stacking Intelligence on all available gears - helmet, chest armor, pants, off-hand, and rings.
Secondary Attributes
Dominance Generation and Dominance Cost Reduction, as Warlock's Infernal Breath build's skill requires Dominance.
Offensive Affixes
Prioritize Critical Strike Chance and Critical Strike Damage on rings and gloves. Also, look for Damage over Time and Damage to Burning Enemies affixes, as the breath inflicts burning effects.
Defense Affixes
Since you often need to stand still while channeling the breath, you need to be tanky. Prioritize damage reduction on chest armor and pants, and armor percentage on helmet and amulet. Life on Hit is also crucial for this build, providing continuous life regeneration during combat.
This concludes our guide to building Warlock's Infernal Breath in Diablo 4 Season 15 PTR. For more information, follow EZG Facebook, where we also regularly give away resources. Participating is simple: just @ your friend in Facebook comments section.
Finally, one thing to note is that this is currently in the test server phase, and there may be some bugs affecting BD performance. However, rest assured that these issues will not appear in the final release.















