Diablo 4 Season 9: Forgotten Souls & Opticide Farming

Welcome, brave adventurers of Sanctuary! If you're deep into Diablo 4 Season 9: Sins of the Horadrim, you know the grind for Forgotten Souls and Opticide is real. These essential materials are the backbone of Masterworking your gear, especially when aiming for that coveted triple Masterwork or fine-tuning your skills. Recent patches have shaken things up, making certain methods more rewarding than ever. Whether you're chasing those elusive Forgotten Souls or stockpiling Opticide for epic upgrades, this guide has you covered with the most efficient farming strategies. Want to stay ahead of the grind? Bookmark our site for the latest Diablo 4 tips and check out our Diablo 4 store for premium gear and services to supercharge your journey!

Legion Events are the gold standard for farming Forgotten Souls in Season 9, especially on Torment IV difficulty. Spawning every 25 minutes across Sanctuary's open world, these events are quick, taking just 2–4 minutes to complete. Thanks to recent patch buffs, you can now score 200–250 Forgotten Souls per event, alongside Veiled Crystals, Ancestral gear, and boss summon materials. In an hour, hitting two Legion Events can net you up to 500 Forgotten Souls—a massive haul for minimal time investment.To never miss an event, use helltides.com to track timers. A countdown appears 10 minutes before each event, ensuring you're ready to dive in. Pair this with a fast-moving character build, and you'll be swimming in Souls in no time. 

Pro tip: Combine Legion Events with other activities during the 25-minute downtime to maximize efficiency.

If you're after a more continuous grind, Nightmare Dungeons with the Horadric Materials Reserve affix are a solid choice. These dungeons offer a dual-purpose farm: Opticide from monsters and a chance at Forgotten Souls from Horadric Chests. Each chest can drop 15 Forgotten Souls, but their spawn is inconsistent, often hidden in obscure corners of the dungeon. This makes them less reliable than Legion Events for Souls but excellent for Opticide, especially if you're already running dungeons for Glyph XP or Escalation farming.The catch? You'll need to scour every nook and cranny, which can slow you down. For players prioritizing Forgotten Souls, the time spent searching may not outweigh the 250 Souls from a quick Legion Event. However, if you're multitasking—leveling glyphs, farming gear, or chasing Opticide—Nightmare Dungeons are a great option.

For Opticide, the Strongroom bug in Nightmare Dungeons is a game-changer. By opening a Nightmare Dungeon with a Strongroom affix and teleporting to boss lairs like Grigoire, Lord Zir, or Hangman's Hall, you can check for Strongrooms without running the entire dungeon. Look for purple flames at the entrance—if they're there, you've hit the jackpot. A Strongroom takes just seconds to clear and can yield 20–40 Forgotten Souls and 2,500–4,000 Opticide per run.The process is simple: teleport between boss lairs, check for Strongrooms, clear them, and move on. After a full rotation (checking all lairs), they reset automatically, allowing you to repeat the cycle. This method is ideal for players with fast-moving builds, as it minimizes downtime and maximizes rewards. Pair it with an Opticide Mine affix for even higher drops (45–60 Opticide per monster), and you'll be stacking resources like a pro.