Lord Grigoire stands out as one of the more approachable pinnacle bosses in Diablo 4. Known for his straightforward mechanics and generous loot drops, Grigoire offers a great opportunity for players to farm powerful Uniques and other valuable items. This guide will walk you through the process of summoning and defeating Lord Grigoire, and provide insight into his loot table across different difficulties.

How to Summon Lord Grigoire

To face Lord Grigoire, you need to summon him in the Hall of the Penitent dungeon, located in the Dry Steppes region south of Ked Bardu. Summoning Lord Grigoire requires specific materials which vary depending on the difficulty you choose:

Normal Difficulty: Requires 5 Living Steel.

Tormented Difficulty: Requires 15 Living Steel and 1 Stygian Stone.

Living Steel is primarily acquired from Living Steel chests that appear during Helltide events. These chests cost 275 Aberrant Cinders to open and appear in limited numbers per event. For those looking for a greater challenge and better rewards, the Tormented difficulty significantly increases Grigoire's damage and loot drops, including a higher chance for Mythic Uniques.

Stygian Stones can be farmed from Infernal Hordes, where you can use Aether on resource chests for a small chance of obtaining one.

Lord Grigoire Boss Guide

The battle against Lord Grigoire is a test of agility and survival. Here's a breakdown of the fight's mechanics:

Initial Phase: At the start of the encounter, the floor will periodically glow with electricity and then explode in a grid pattern. To avoid damage, start in the middle of the room and move to the edge just as Grigoire spawns. This mechanic is central to the fight, so mastering it is crucial. If evading the explosions is challenging, consider enhancing your character's movement speed.

Melee Attacks: Grigoire is a melee attacker wielding a one-handed mace imbued with electricity. He strikes with lightning orbs that cause moderate damage, but his final attack in the combo delivers massive damage and applies a debuff. On Tormented difficulty, this debuff accumulates with each stack, increasing the damage you take from all sources. Most builds can manage up to three stacks, so keep an eye on your debuff level.

Pillar Phase: When Grigoire's health drops below 75%, he will summon lightning pillars that create electric walls throughout the arena. These pillars form a maze-like structure, requiring you to use movement skills like Teleport to navigate safely. Avoid walking through the walls to prevent instant death.

Explosive AoEs: Later in the fight, Grigoire will create ground AoEs that cause portions of the floor to explode, similar to the initial phase's explosions. Position yourself in the middle of the arena, wait for a safe corner to open up, and use a movement skill to escape the danger zone. Repeat this maneuver until Grigoire is defeated.

Lord Grigoire's Drop Table

Upon defeating Lord Grigoire, he will drop a range of items based on his unique drop table. All pinnacle bosses in Diablo 4 have a 1.5% chance of dropping a Mythic Unique, with this chance increasing to approximately 7.5% on Tormented difficulty. Below are the potential Uniques that Grigoire can drop, categorized by class:

Class Agnostic:

All Mythic Uniques

Penitent Greaves

Barbarian:

Ancient's Oath

Battle Trance

The Butcher's Cleaver

Rage of Harrogath

Ramaladni's Magnum Opus

Twin Strikes

Unbroken Chain

Druid:

The Butcher's Cleaver

Earthbreaker

Hunter's Zenith

Insatiable Fury

Mjolnic Ryng

Waxing Gibbous

Necromancer:

Blood Artisan's Cuirass

The Butcher's Cleaver

Ebonpiercer

Greaves of the Empty Tomb

Howl from Below

Path of Trag'Oul

Rogue:

Grasp of Shadow

Saboteur's Signet

Shroud of Khanduras

Windforce

Word of Hakan

Sorcerer:

Axial Conduit

Flameweaver

Gloves of the Illuminator

Iceheart Brais

Staff of Lam Esen

Defeating Lord Grigoire is not only a rewarding experience in terms of loot but also provides a relatively straightforward challenge for players looking to farm high-quality gear and items. By mastering the fight mechanics and understanding the best strategies for summoning and combating this boss, you'll be well on your way to acquiring some of the best gear available in Diablo 4.

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