Ready to face the ultimate challenge in Diablo 4? Summoning the fearsome endgame bosses like Duriel, Echo of Varshan, and Grigoire, the Galvanic Saint, is your gateway to unlocking the most coveted Unique and Uber Unique items. But it’s not just about brute strength-you’ll need to gather rare materials from previous bosses and master the summoning rituals to climb the Boss Ladder and claim your legendary loot. Dive into our guide to learn the precise steps to summon each boss across PC, PlayStation, and Xbox, and prepare to conquer Diablo 4’s toughest foes.
Summoning the five bosses – Echo of Varshan; Grigoire, the Galvanic Saint; the Beast in Ice; Lord Zir, the Dark Master; and Zuriel, the King of Maggots – requires different parameters for each. These bosses will also be available in the Eternal Realm, by the way, meaning you can tackle them even if you don’t want to participate in any of Diablo 4’s seasons.
Here are all the endgame bosses in Diablo 4. We’ve also provided details on how to summon each boss plus a rundown of the rewards you can get for defeating them.
How to summon Echo of Varshan
To summon the Echo of Varshan in Diablo 4, players must be at World Tier 3 or 4 and gather specific materials known as Malignant Hearts, requiring 2 hearts at World Tier 3 or 5 hearts at World Tier 4. Additionally, players need to collect three body parts of Varshan-the Trembling Hand, Blackened Femur, and Gurgling Head-obtained from Grotesque Debtors during the Whispers of the Dead events near the Tree of Whispers in northern Hawezar. Once these items are collected, players head to the Malignant Burrow dungeon, located beside the Tree of Whispers, where they sacrifice the materials at the summoning altar to initiate the boss fight. Crafting the body parts is also possible through an Alchemist vendor if farming proves too tedious. It is recommended to summon Echo of Varshan with a team due to the boss’s difficulty, especially at higher tiers.
Echo of Varshan is available on both World Tier 3 and World Tier 4, with different requirements to summon for each World Tier.
If you’re playing on World Tier 3, you’ll need to obtain Malignant Body Parts from Grotesque Debtors from Whisper Caches. You can obtain Whisper Caches by offering 10 Grim Favors to the Tree of Whispers. If you want to fight the Echo of Varshan on World Tier 4, you will also need a Malignant Heart to tackle this boss.
Echo of Varshan rewards
- Barbarian: Field of Crimson, 100,000 Steps, Gohr’s Devastating Grip
- Druid: Mad Wolf’s Glee, Vasily’s Prayer, Greatstaff of the Crone
- Necromancer: Bloodless Scream, Deathless Visage, Deathspeaker’s Pendant
- Rogue: Condemnation, Eyes in the Dark, Skyhunter
- Sorcerer: Staff of Endless Rage, Esu’s Heirloom, Raiment of the Infinite
- All Classes: Mother’s Embrace, Frostburn
- Cosmetic: Flesh-Weld Rod Trophy
How to summon Grigoire, the Galvanic Saint
To summon Grigoire, the Galvanic Saint in Diablo 4, you need to collect Living Steel, a special material obtained from Tortured Gifts during Helltide events. The amount required depends on your World Tier: 2 Living Steel for World Tier 3 or 5 for World Tier 4. Once you have enough, travel to the Hall of the Penitent dungeon located in the Dry Steppes region, south of Ked Bardu. Inside the dungeon, proceed to the Chamber of Penitence where you will find a Light-Touched Altar. Interact with the altar and sacrifice the required Living Steel to summon Grigoire and begin the boss fight. Preparing with high Lightning Resistance and a strong build is recommended due to Grigoire’s lightning-based attacks.
Grigoire can be encountered on World Tier 3 and World Tier 4. The element for this boss is Lightning, so make sure to stock up on Lightning resistance Elixirs or slot some Topazes into your gear before you take on this boss.
You’ll need to obtain Living Steel from Tortured Offerings in Helltides to fight Grigoire. Helltides become accessible once you are able to jump into World Tier 3 and are designated by a red marker that features a sword surrounded by fire.
Grigoire, the Galvanic Saint rewards
- Barbarian: Ramaladni’s Magnum Opus, Rage of Harrogath, Ancients’ Oath, Battle Trance, The Butcher’s Cleaver
- Druid: Insatiable Fury, Hunter’s Zenith, Waxing Gibbous, The Butcher’s Cleaver
- Necromancer: Blood Artisan’s Cuirass, Howl from Below, Greaves of the Empty Tomb
- Rogue: Word of Hakan, Grasp of Shadow, Windforce
- Sorcerer: Staff of Lam Esen, Iceheart Brais, Gloves of the Illuminator
- All Classes: Penitent Greaves
- Cosmetic: Demonbinder Mount Armor
How to summon the Beast in Ice
To summon the Beast in the Ice in Diablo 4, you need to collect nine Distilled Fear, which drops from completing Nightmare Dungeons at Tier 21 or higher, with better drop rates at higher tiers. Once you have the required Distilled Fear, head to the Glacial Fissure dungeon in the Fractured Peaks region near Kyovashad. At the end of this dungeon, use the Distilled Fear at the summoning altar to call forth the Beast in the Ice. The fight involves battling through waves of enemies before facing the boss, who uses powerful cold-based attacks, so maximizing your cold resistance and using a Cold Resistance Elixir is highly recommended. For a more challenging encounter with better rewards, you can summon the Tormented version by using 27 Distilled Fear and one Stygian Stone, which raises the boss to level 200 and significantly increases its difficulty.
The Beast in Ice can be encountered in World Tier 4. As one would expect, its element is Ice, which means you will want to boost your Ice resistance as much as possible before using your Glacial Fissure Nightmare Sigil. Naturally, this boss will be weak to fire, so if you’re a Sorcerer, get ready to whip out those Hydras.
In order to summon The Beast in Ice, you’ll need to collect Distilled Fear, which you can obtain by tackling Tier 30 or higher Nightmare Dungeons. Once you’ve collected your Distilled Fear, you can then head over to any Occultist to craft a Glacial Fissure Nightmare Sigil to challenge the Beast in Ice.
The Beast in Ice rewards
- Barbarian: Fields of Crimson, 100,000 Steps, Ancients’ Oath, Battle Trance, Hellhammer
- Druid: Insatiable Fury, Hunter’s Zenith, Waxing Gibbous, Storm’s Companion
- Necromancer: Bloodless Scream, Howl from Below, Deathspeaker’s Pendant, Ring of Mendeln
- Rogue: Condemnation, Word of Hakan, Windforce, Eaglehorn
- Sorcerer: Staff of Lam Esen, Esu’s Heirloom, Gloves of the Illuminator, The Oculus
- All Classes: Frostburn, Mother’s Embrace, Fists of Fate, Tassets of the Dawning Sky
- Cosmetics: Skull Torch Mount Trophy, Fell Steed Mount Trophy
How to summon Lord Zir (The Dark Master)
To summon Lord Zir, also known as The Dark Master, players must be at World Tier 4 and collect nine Exquisite Blood items. These can be obtained primarily from Legion Events, World Bosses, and Helltide Bosses, which are marked on the map for easy farming. Once you have the nine Exquisite Blood, travel to the Darkened Way in the Fractured Peaks region and enter the Ancient’s Seat dungeon. Inside, interact with the Bloodied Altar to offer the Exquisite Blood and summon Lord Zir. For the Tormented version, which is a tougher level 200 boss, you need 27 Exquisite Blood and 2 Stygian Stones, which can be found in chests in The Pit. Defeating Lord Zir rewards unique items and is a key part of endgame content in Diablo 4.
Lord Zir, also known as The Dark Master, can be challenged at World Tier 4.
In order to summon Lord Zir you will need to acquire Exquisite Blood (which you will need multiples of) from Legion Events and World Bosses. Thankfully, Legion Events and World Bosses are relatively easy to spot on the map. Legion Events are marked with a giant red circle, and if you are in the area of a World Boss you will see a timer appear on the right-hand side of your screen.
Lord Zir, the Dark Master, rewards
- Barbarian: Ramaladni’s Magnum Opus, Rage of Harrogath, Gohr’s Devastating Grips, Overkill, The Butcher’s Cleaver
- Druid: Mad Wolf’s Glee, Vasily’s Prayer, Greatstaff of the Crone, Fleshrender, The Butcher’s Cleaver
- Necromancer: Blood Artisan’s Cuirass, Deathless Visage, Greaves of the Empty Tomb, Lidless Wall
- Rogue: Grasp of Shadow, Eyes in the Dark, Skyhunter, Asheara’s Khanjar
- Sorcerer: Staff of Endless Rage, Iceheart Brais, Raiment of the Infinite, Esadora’s Overflowing Cameo
- All Classes: Penitent Greaves, Razorplate, Temerity
- Cosmetics: The Diadem of the Ancient Helm
How to summon Duriel, King of Maggots
To summon Duriel, King of Maggots, in Diablo 4, you must first collect two Mucus-Slick Eggs and two Shards of Agony, which are dropped by the endgame bosses Echo of Varshan and Grigoire, respectively. Once you have these items, head to the Gaping Crevasse dungeon located south of Kehjistan. Inside the dungeon, find the Pestilent Altar and interact with it to initiate the summoning ritual. Duriel is a challenging poison-focused boss, so prepare by maximizing your poison resistance and bringing strong single-target damage. Defeating Duriel rewards you with unique and Uber Unique items, making the effort worthwhile for endgame players.
The infamous Duriel can only be encountered on World Tier 4, and is a little more complicated to get access to by comparison to other bosses in Diablo 4. You’ll want to make sure you’ve stacked a considerable amount of Poison resistance before jumping into the fray and fighting Duriel, so slot in some Flawless Emeralds, chug your Elixirs, and make sure your accessories have enough Poison resistance to see you to the end.
In order to challenge Duriel, you will need to respectively obtain Mucus-slick Eggs and Shards of Agony from the Echo of Varshan and Grigoire, the Galvanic Saint. After you’ve collected enough of these items, you can summon Duriel, King of Maggots, to obtain a new class of Unique items: Uber Unique items.
Duriel, King of Maggots rewards
The Unique rewards for Duriel, King of Maggots, include:
- Barbarian: Azurewrath, Tuskhelm of Joritz the Mighty
- Druid: Tempest Roar, Dolmen Stone
- Necromancer: Black River, Blood Moon Breeches
- Rogue: Cowl of the Nameless, Scoundrel’s Leathers
- Sorcerer: Flamescar, Blue Rose
- All Classes: Godslayer Crown, Flickerstep, Tibault’s Will, X’Fal’s Corroded Signet, Soulbrand, Banished Lord’s Talisman
- Cosmetic: Smoldering Brimstone Mount
The Uber Unique rewards for Duriel, King of Maggots, include:
- Barbarian: Doombringer, The Grandfather
- Druid: Ahavarion, Spear of Lycander
- Necromancer: Doombringer, The Grandfather
- Rogue: Doombringer
- Sorcerer: Ahavarion, Spear of Lycander
- All Classes: Melted Heart of Selig, Andariel’s Visage, Harlequin Crest, Ring of Starless Skies
- Cosmetic: Smoldering Brimstone Mount
What’s the easiest way to summon Duriel in Diablo 4
The easiest way to summon Duriel in Diablo 4 is to first collect 2 Shards of Agony and 2 Mucus-Slicked Eggs, which are obtained by defeating the Uber bosses Grigoire and Varshan respectively. Once you have these materials, travel to the Gaping Crevasse dungeon located in southern Kehjistan. Inside the dungeon, proceed to the Pestilent Altar at the end and interact with it to place the required items, which will summon Duriel for battle.
What materials do I need to summon Duriel in Diablo 4
To summon Duriel in Diablo 4, you need the following materials:
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2 (or sometimes 3) Shards of Agony, which drop from defeating the Uber bosses Grigoire, the Galvanic Saint, or Varshan.
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2 Mucus-Slicked Eggs, obtained by defeating Echo of Varshan, another Uber boss.
Once you have these materials, travel to the Gaping Crevasse dungeon in southern Kehjistan. Inside, locate the Pestilent Altar at the end of the dungeon and place the required materials there to summon Duriel for battle.
