Threads of Creation is a new endgame mapping system introduced in Path of Exile 3.30: Covens of Umbra. It replaces Scarabs, allowing players to customize league mechanics directly through the Map Device.
How Do Threads of Creation Work?
Players can select a league mechanic and spend Threads to enhance its encounters.
- Choose a mechanic: Guarantee specific league content in your Maps.
- Increase difficulty: Additional Threads make monsters more challenging and increase their rarity.
- Unlock powerful effects: Each Thread spent increases the chance of random special modifiers.
- Invest up to 8 Threads: Spend up to eight Threads on one league mechanic.
- Use up to 3 mechanics: Progress through the Atlas questline to unlock three Thread slots.
Thread configurations persist between Maps, and Threads can be consumed directly from your stash.

PoE Threads of Creation List
The system supports ten primary league mechanics:
| Thread Type | League Mechanic |
|---|---|
| Abyss Thread | Abyss |
| Legion Thread | Legion |
| Blight Thread | Blight |
| Breach Thread | Breach |
| Incursion Thread | Incursion |
| Betrayal Thread | Betrayal |
| Bestiary Thread | Bestiary |
| Expedition Thread | Expedition |
| Ultimatum Thread | Ultimatum |
| Ritual Thread | Ritual |
For example, an Abyss Thread adds Abyss encounters, while a Blight Thread adds Blight content to an area.
Threads of Creation vs. Scarabs
| Feature | Scarabs | Threads of Creation |
|---|---|---|
| Main purpose | Modify Map content | Enhance selected league mechanics |
| Customization | Different Scarab effects | Thread investment and random effects |
| Difficulty scaling | Depends on Scarab | Scales with Thread investment |
| Map preparation | Insert Scarabs | Configure Threads in Map Device |
Many previous Scarab effects are also being incorporated into the redesigned Atlas Passive Tree.
Is Threads of Creation Better Than Scarabs?
Threads of Creation should make Map preparation simpler while offering more control over encounter difficulty.
Players can focus on their preferred league mechanics, invest more Threads for potentially better rewards, and experiment with powerful random effects.
However, the profitability of each strategy will depend on Thread costs, encounter difficulty, and actual drops.
Overall, Threads of Creation is one of the biggest mapping changes in PoE 3.30, replacing Scarab combinations with a more streamlined system focused on league mechanics, difficulty scaling, and reward potential.