Discover how to obtain Reactive Ooze in Diablo 4 Season 9, which grants a Resource Generation boost, helping fight enemies more effectively.

Diablo 4 Season 9: Sins of the Horadrim introduces a wealth of new content, including a fresh seasonal questline along with new features. One of the highlights of the season is Horadric Spellcraft. It allows players to create customized spells by combining three components—Catalysts, Infusions, and Arcana. Each of these elements powers up different aspects of the Horadric Spell. Arcana determines the additional effects of a Horadric Spell while also providing various buffs. Reactive Ooze is a Magic Arcana that increases your Resource Generation rate, aiding in sustained combat. Find out how to acquire Reactive Ooze in Diablo 4 Season 9.
Related: Diablo 4 Season 9: How To Get Jagged Bramble
How To Obtain Reactive Ooze in Diablo 4
To use a Horadric Spell, you should first acquire the core components—Catalysts, Infusions, and Arcana. While Catalysts and Infusions are earned through the seasonal questline, you need to clear Horadric Strongrooms to acquire Arcana. Complete a Horadric Strongrooms, found within Nightmare Dungeons, to obtain the Reactive Ooze Arcana. As you progress through the Horadric Knowledge system, you will unlock the ability for higher-tier Arcana (Rare and Legendary) to drop from these Strongrooms.
How To Use Reactive Ooze in Diablo 4

Once acquired, equip the Reactive Ooze in one of the Arcana slots. This grants 5% Maximum Resource Generation per second to your Catalyst for the next 10 seconds. This effect can be further enhanced by upgrading Reactive Ooze at the Horadric Spellcraft menu. You can upgrade up to Rank 5 using Horadric Phials through the Upgrade Power option. You will receive +3% effect for each rank, making the Maximum Resource Generation bonus cap at 20%. The Resource Generation is a crucial stat that allows you to effectively replenish primary resources such as Mana, Fury, Spirit, and Essence.
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