In Path of Exile, finding a consistent and low-investment farming method that still generates good returns is no small task. Many players chase high-end mechanics like juiced Delirium maps POE currency, Legion farming, or Expedition rotations-but not everyone wants to sink dozens of Divine Orbs into setup costs.
Let's break down exactly how this setup works, why it's so effective, and how you can replicate it yourself.
Why Underground Sea?
The Underground Sea Map is the backbone of this strategy for a simple reason: it drops the Doppelganger Divination Card, which turns into a 20% quality Mirror of Kalandra. Each completed set gives you one Gemcutter's Prism (GCP), worth more than a Chaos Orb in value.
In just 15–20 maps, he earned around 40 GCPs, which already covers most of his investment costs-including the map, Scarabs, and device crafts.
The Core Setup: Beyond + Strongboxes
The foundation of this farming loop relies on two synergistic mechanics: Beyond and Strongboxes.
Beyond adds extra monsters to your maps, with a chance to spawn powerful Beyond bosses. These bosses have a significantly higher chance to drop Tainted Currency, including the ultra-valuable Tainted Fusing Orbs-which currently trade for ~30 Chaos each.
Strongboxes, meanwhile, add bursts of extra loot and pack density. When juiced with the right Atlas passives, they can spawn additional monsters that trigger even more Beyond portals.
To make this work, Pette uses Singular Focus to sustain the Underground Sea map pool while taking every Strongbox-related Atlas node-including those that give:
+1 additional Strongbox,
Double Currency and Double Divination Card drops,
Corrupted Strongboxes, and
"Openable Again" boxes (which let you reopen a box multiple times).
Reopening a Strongbox up to three times massively boosts Beyond spawns, making it almost guaranteed that you'll summon at least one Beyond boss per map.
Atlas Passive Tree Setup
Here's the Atlas routing that powers the core of the method:
1.Strongboxes Section:
Take Twice Tempted, Secret Operations, Tamper-Proof, and Enduring Influence for Strongbox quantity and safety.
Grab the Corrupted Strongboxes and Reopen nodes for extra monster spawns.
2.Beyond Cluster:
Tomb of the Saints-Increases the chance to spawn Beyond unique bosses.
Swarming Hive-Boosts Divination Card drops from Beyond demons.
The Flesh Harvest-Increases the quantity of Tainted Currency dropped from Beyond monsters.
3.Map Quality and Quantity:
Chisel Perfection, Ethereal Existence, and Eater of Worlds Influence nodes increase item quantity and pack size.
Use Singular Focus to maintain Underground Sea maps indefinitely, ensuring consistent farming.
The key is monster pack size. Each map should roll at least +24–26% pack size for maximum monster density and loot potential.
Scarab Setup
Scarabs are what make this build sing. Pette uses a four-scarab setup to ensure the maps are as packed as possible while keeping costs manageable:
1.Beyond Scarab of Assurance-Boosts tainted currency drops and increases the chance for Beyond bosses.
2.Beyond Scarab of Invasion-Adds 8–12 additional Beyond portals, supercharging density.
3.Scarab of Adversity-Adds four packs of mirrored rare monsters, increasing the odds of Beyond interactions.
4.Ambush Map Device Craft-Adds four extra Strongboxes, improving both loot and monster spawns.
This combination creates a feedback loop: more monsters = more Beyond = more bosses = more tainted currency = more profit.
Dealing with Fortress Encounters
The only real danger in this setup is when Beyond bosses spawn inside Fortresses (league mechanic encounters). These moments can get extremely hectic, especially when both Beyond and Fortress waves spawn simultaneously.Rolling and Running Maps
For rolling, the process is straightforward:
Aim for 26% pack size and at least 90%+ item quantity after chiseling.
Avoid dangerous mods for your build (especially "Cannot Regenerate" if you rely on regen or ES recovery).
Always chisel maps to 20% quality for maximum returns.
Since Underground Sea maps are easy to sustain with Singular Focus, you'll only need to buy a few to start-Pette recommends around 5–10 maps, which costs roughly 2 Chaos each. After a few runs, you'll be sustaining your own map pool naturally.
Loot Breakdown and Profit
After around 14–15 runs, here's what Pette reported:
Total Value: ~13 Divines worth of loot.
Without Divine Drops: Still about 11 Divines, or roughly 0.7 Divine per map.
Tainted Fusing Orbs: Only two dropped, likely due to RNG variance.
Currency and Scarabs: Dozens of Chaos Orbs, multiple valuable Scarabs, and stacks of GCPs from Doppelganger cards.
Gold: Around 600,000 Gold, which can be increased further using a Gold Flask with Item Rarity.
Considering the minimal investment, this is an excellent yield-especially since the majority of the cost is offset by GCPs and regular currency drops.
Why It Works
This method shines for three key reasons:
1.Low Entry Cost-You can start farming profitably with just a few Chaos Orbs.
2.Sustainable Map Pool-Singular Focus guarantees you stay in Underground Sea maps indefinitely.
3.Multiple Loot Sources-Beyond, Strongboxes, Divination Cards, and Scarabs all layer together for consistent profit.
It's not the flashiest or most explosive strategy, but it's incredibly reliable-and you don't need a meta-tier build or massive currency stash to get started.
Tips for Optimization
Use a Gold Flask with "Increased Item Rarity" to boost both gold and item quality drops.
Stack Item Quantity wherever possible-through map rolls, atlas nodes, and gear.
Read your Beyond mods carefully-some Beyond bosses and Eater altars can be extremely deadly on high mods.
Favor clear-speed builds (like Kinetic Blast, Tornado Shot, or Lightning Arrow) to handle large packs safely.
Sell GCPs in bulk for maximum profit margin; they're always in high demand.
Final Thoughts
It's cheap, scalable, and fun, with enough chaos and monster density to keep the gameplay exciting while still offering a steady profit stream.
Even if you don't get lucky with Divine Orbs or Tainted Fusings every session, the steady GCP income and bulk currency drops make this a consistent earner-ideal for mid-league players looking to rebuild funds without taking major risks Path of exile currency for sale.
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