Summoning the Grigoire boss in Diablo 4 is no easy feat, requiring players to navigate the treacherous Helltides to collect the elusive Living Steel material needed to challenge him. The Galvanic Saint is just one of the four bosses added in the Season of Blood as a way for players to target farm unique items, but the process of gathering the necessary materials is a challenge in itself.
Players can choose to take on Grigoire on either Nightmare or Torment world tier, with the latter offering better rewards. While fighting him on Torment will yield Shards of Agony needed to summon the endgame Duriel boss, players may want to wait until reaching this higher tier to maximize their rewards.
To obtain Living Steel, players can open Tortured Gift chests during Helltide events by collecting Aberrant Cinders dropped by enemies. Additionally, defeating elites or opening Whisper caches during season four can also reward players with Living Steel.
Once players have gathered enough Living Steel, they must make their way to the Hall of the Penitent dungeon lair in the Dry Steppes. Inside, they can summon Grigoire by placing their Living Steel in the Light-Touched Altar. The cost of summoning Grigoire varies depending on the world tier, with Torment offering better rewards such as Shards of Agony for summoning Duriel and Ancestral gear.
Facing Grigoire in battle presents a formidable challenge, as he boasts a powerful moveset that includes summoning lightning strikes, creating electric mazes with lightning totems, and calling in reinforcements to aid him. Players must strategize and utilize their skills to defeat this formidable boss and claim the unique rewards he offers.
