With Diablo 4 Lord of Hatred expansion about to go live, the new Warlock class is bound to take center stage - much like Paladin did upon its own debut. Warlock brings a distinctive visual identity and playstyle: you can go all-in on a pure caster build, or you can muster a full demonic army akin to a Necromancer.
If you plan to start the new season fresh with a Warlock, a summoning build will almost certainly provide the smoothest leveling journey. That is why you should absolutely give Legion Warlock build a try. It lets you assemble overwhelming battlefield force by calling forth hordes of lesser and greater demons, and it does not rely on any specific gear to function.
Core Mechanics
Before diving into the skill tree and leveling route, understanding Warlock’s foundational resource cycle is key to making this build work. Warlock operates with two separate resource systems: Wrath and Dominance.
- Wrath: Located on the left side of the resource globe. Wrath is quickly generated through the use of basic skills and then expended on core skills to deliver heavy damage.
- Dominance: Found on the right side of the resource globe. It has a base maximum of 30 and regenerates very slowly on its own. The primary function of Dominance is to call forth the more potent greater demons found deeper in the skill tree.
With this dual-resource system in mind, the core gameplay loop of Legion Warlock build revolves around using a basic skill to rapidly stockpile Wrath, then repeatedly unleashing a core skill to dump that Wrath for damage. Meanwhile, whenever enough Dominance is available, you bring a greater demon onto the field to massively spike your overall damage output.
Legion Shard
The true heart of Legion Warlock build is Warlock’s class-specific specialization unlocked at level 15: Legion Shard. The crucial effect of this passive reads: Whenever 50 Lesser Demons die, your next Greater Demon skill costs no resources.
Given how slowly Dominance regenerates naturally, the value of a free cast mechanic cannot be overstated. Thanks to Legion Shard, you can frequently summon Greater Demons such as Rampage and Fiend of Abaddon without spending any Dominance - sometimes even maintaining multiple greater demons on the battlefield at the same time.
Fifty lesser demon casualties may sound like a steep requirement, but with the right skill enhancements, reaching that threshold becomes effortless.
Once you upgrade the core skill Bombardment, a single cast can summon up to 9 lesser demons. Pair that with Summon Hellwyrm enhancement found in Sigil of Summons skill, which copies your lesser demon casts. This effectively doubles the number of demons summoned by Bombardment to 18 per cycle.
Through this approach, each damage rotation triggers Legion Shard’s free greater demon cast extremely quickly, resulting in an ever-growing tide of demons. Furthermore, to improve mobility and traversal efficiency, you will want the movement skill Nether Step, which grants a teleport ability to greatly speed up map clearing.
Legion Warlock Skills
Please note that with the skill tree adjustments coming in the expansion, unlocking deeper skills is no longer strictly tied to the total number of points invested; instead, it is gated by character level. Some skill enhancements may also carry additional level requirements. Therefore, the priority for point allocation detailed below follows this principle: Unlock new skills and key enhancement nodes first, and only afterward consider investing points to max out individual skill ranks.
Command Fallen (Basic Skill)
Summons a Fallen Lunatic that rushes at enemies and explodes. Allocate a single point here. You need it primarily for the Wrath node in its enhancement branch to kickstart resource generation, not for its damage.
Enhancements
- Wrath: Using Command Fallen grants Wrath.
- Fallen Army: Upgrades Command Fallen to summon a maximum number of Fallen Grunts, with each attack generating 10 Wrath.
- Lifetime Damage: Increases the damage of Fallen Grunts.
Bombardment (Greater Demon)
This skill consumes your Wrath. You will want to unlock it as soon as possible and prioritize raising it to rank 12/12. Its base effect hurls 4 lesser demons to the ground, dealing impact damage.
Enhancements
- Ramping Brutality: Consecutive casts of Bombardment gradually increase the number of demons summoned, up to a maximum of 4 extra demons.
- Additional Demon: Directly adds 1 more demon per Bombardment cast.
- Focus Target: Boosts damage against single targets. If you find area-of-effect damage lacking, you may swap this for Telekinesis.
Nether Step (Mobility Skill)
Teleports you to a targeted location and grants a temporary burst of decaying movement speed. This is a skill you should pick up early, as it significantly accelerates your progress through the campaign.
Enhancements
- Recall the Shadows: Teleporting also pulls all Abyss Summons along with you.
- Extra Charge: Grants one additional use of Nether Step.
- Movement Speed: Extends the duration of the speed bonus by 50%.
Rampage (Summoning Skill)
The priority for this skill is equally high. Aim to rank it up to 12 as soon as feasible. Casting it costs 10 Dominance and calls forth a Brute demon for 10 seconds, which has a chance to apply Eviscerate effect.
Enhancements
- Abyssal Titan: Converts the demon to Abyss type, increases its damage, allows it to be commanded to attack specific targets, and makes it affected by the teleport effect of Nether Step.
- Killstreak Damage: Landing a kill with Rampage increases your damage for 20 seconds.
- Elite Eviscerate: Rampage can now apply Eviscerate effect to Elite enemies.
Sigil of Summons (Lesser Demon)
This skill creates a ritual area where defeating enemies charges a meter that eventually summons additional demons. In the early game, a single point is enough. Later on, with more points to spare, you can consider raising it to rank 12.
Enhancements
- Summon Hellwyrm: After accumulating 16 charges, summons a Hellwyrm that mimics your lesser demon skill casts - effectively doubling the demons called forth by Bombardment.
- Damage: Enemies standing within Sigil area take increased damage.
- Cooldown: Reduces the cooldown of this skill whenever a Greater Demon dies.
Fiend of Abaddon (Ultimate, Greater Demon)
You summon a colossal beast that inflicts massive damage. Unlock this skill quickly and work toward ranking it up to 12.
Enhancements
- Abyssal Colossus (Recommended): Extends the demon’s duration from 15 seconds to 30 seconds, allows you to command it to drag enemies, and converts it to Abyss type so it can be teleported. Excellent for multi-target situations.
- Spiteful Enrage (Alternative): Extends the demon’s duration up to 60 seconds while gradually increasing its damage over time. This may be the better option for boss encounters.
- Dominance (Mandatory): Removes the skill’s cooldown but makes it cost 30 Dominance to cast. This is the prerequisite for maintaining multiple Fiends of Abaddon on the field simultaneously via Legion Shard.
- Crowd Damage: Increases the damage dealt by Fiend of Abaddon’s summoned demon, up to a ×40% multiplier.
Legion Warlock Gear
Official details regarding new Diablo 4 items in Lord of Hatred expansion have not yet been fully revealed, so gear choices remain flexible for now. However, Warlock-exclusive and general Legendary Aspects that have been disclosed so far show exceptional synergy with this setup.
Exclusive Aspects:
- Aspect of Fiendish Oppression: Whenever you summon a Greater Demon, the damage of Bombardment is significantly increased. This aligns perfectly with the build’s core rotation.
- Insidious Aspect: Using Nether Step grants stacks of Shadow Form, with each stack boosting Abyss skill damage, up to a maximum of 10 stacks.
Several general-purpose Aspects can also effectively bolster both offense and defense. Many of these can be reliably acquired by completing specific dungeons.
Legion Warlock boasts spectacular visual flair and should prove more than capable of carrying you through the campaign. Please keep in mind, however, that this is a forward-looking build preview. Be sure to fine-tune and verify your setup based on actual in-game conditions once the expansion officially launches.
