Unleash Lightning and Sparking damage with the Thunderous Particle Infusion. Find out how to obtain it in Diablo 4 Season 9.

The new Horadric Spellcraft system introduced in Diablo 4 Season 9: Sins of the Horadrim lets players customize their spells. They can combine different elements—Catalysts, Infusions, and Arcana—to try out various spell combinations and effects. Each component modifies and enhances the spell in a unique way, with Infusions determining the elemental damage type.
You can choose between 5 different Infusions to imbue various elemental damage, including Fire, Shadow, Cold, Poison, and Lightning. The Thunderous Particle is the Lightning-based Infusion, allowing you to deal Sparking damage with your spells. Find out how to acquire Thunderous Particle in Diablo 4 Season 9.
How To Obtain Thunderous Particle in Diablo 4
The Thunderous Particle Infusion is a part of the Tier 1 rewards for Horadric Knowledge. You can gain Horadric Knowledge by completing Horadric Strongrooms and Helltides. Talk with Bryona to begin the seasonal questline and complete your first Horadric Strongroom to get access to the Horadric Focus.
Interacting with the Horadric Focus near Bryona allows you to view and claim the Horadric Knowledge rewards by Tier. In addition to Thunderous Particle Infusion, you will also receive Celestial Surge Catalyst as a part of the first-tier rewards of Horadric Knowledge.
How To Use Thunderous Particle in Diablo 4

The Thunderous Particle is one of the five Infusions that lets you customize your Horadric Spell elemental damage type. Equip the Infusion from the Horadric Spellcraft Menu to add Lightning and Sparking damage to your Catalyst. Additionally, it arcs 320% Lightning damage to a surrounding enemy upon hitting an enemy, which happens only to each enemy every 3 seconds.
Equipping the Thunderous Particle equals your Lightning Damage Bonus to your highest Damage Type Bonus. Upgrade the Thunderous Particle using Horadric Phial to further enhance its effects. Upgrading to Ranks 2-4 requires 25 Horadric Phials per rank, while Ranks 5-10 cost 75 Horadric Phials per rank. In addition to the Lightning elemental effect, the Infusion also deactivates the monster Suppressor effects for 8 seconds once it reaches Rank 5.
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