Lord Grigoire is considered one of the easiest pinnacle bosses in Diablo 4. He’s tied to farming materials to summon Duriel and can be a great source for Unique drops.
However, the game doesn’t mention his existence or how to summon him, which can make finding him a bit tricky.
This guide will cover everything you need to know about summoning Lord Grigoire, strategies for beating him, and the potential rewards you can get from this boss.
How to Summon Lord Grigoire
Lord Grigoire is located in the Hall of the Penitent dungeon within the Dry Steppes region, south of Ked Bardu. To summon him, you’ll need some specific materials:
- Living Steel: The primary material needed to summon Grigoire. The amount required depends on the difficulty level you’re attempting.
- Stygian Stone: Required for summoning the Tormented version of Grigoire.
Living Steel can be farmed during Helltides by opening Living Steel Chests, which cost 275 Aberrant Cinders each. These chests are rare, with only two spawning per Helltide event.
| Difficulty | Level | Materials Needed | Potential Rewards |
|---|---|---|---|
| Normal | 75 | 5 Living Steel | Any Unique, 1.5% chance for a Mythic Unique |
| Tormented | 200 | 15 Living Steel + 1 Stygian Stone | 5x loot, ~7.5% chance for a Mythic Unique |
For the Tormented difficulty, you’ll face a much tougher Grigoire, but the rewards are significantly better, including more loot and a higher chance to get Mythic Uniques.
Boss Fight Guide: Lord Grigoire
Grigoire’s fight focuses heavily on dodging his electrical attacks and managing the small arena space. Here’s a breakdown of his mechanics:
- Opening Attack: First, the floor will be electrifying in a grid containing electricity and then the explosions. Start in the center and then move to the corner of the room to make it to the next level of the attacks.
- Melee Combo Attacks: Grigoire wields a one handed mace that shoots orbs of lightning on every move of the weapon. His combo comes to the final blow that can put a debuff on an ‘Tormented’ difficulty rises the damage taken. As a rule, do not stack this debuff as it can easily cause severe problems to most builds.
- Lightning Maze Phase: Starting from 75% of Grigoire’s HP, he will create Lightning Pillars that results to Electric Walls rendering the arena complex. Teleport can be utilized in moving through the walls as far as one may bump into these walls and die.
- Late-Stage Explosions: As the fighting stage goes on, Grigoire will call forth ground AoEs that detonate identical to what occurred at the start of the battle. When the enemy is firing shot down the center and wait for the safe spots then use the mobility skill to move around to avoid them.
Tips for the Fight:
- Prioritize mobility to dodge Grigoire’s lightning attacks.
- Movement speed buffs or skills like Dash, Teleport, or Blink can help you bypass the lightning maze.
- If you’re struggling with his melee damage, consider boosting your character’s survivability stats.
Rewards and Drop Table
Defeating Lord Grigoire can be highly rewarding, especially in Tormented difficulty. His loot isn’t entirely random—he has a specific drop table for different classes. All pinnacle bosses, including Grigoire, have a chance to drop Mythic Uniques (1.5% chance in Normal, ~7.5% in Tormented).
Here’s what you can expect:
Class-Agnostic Uniques:
- All Mythic Uniques
- Penitent Greaves
Class-Specific Uniques:
- 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
Farming Tips
- For efficient farming, stock up on Living Steel during Helltides. Focus on opening Living Steel Chests to gather materials faster.
- If your build struggles with mobility, consider using gear that boosts movement speed or skills that provide quick escapes.
- The Tormented variant is much tougher but well worth it if you’re aiming for higher-tier Uniques and the best loot drops.
