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Modern Ouroboros item
Modern Ouroboros is an unlockable passive item in Fiend Folio, a mod for The Binding of Isaac.
Description
Isaac shoots grey smoke tears that leave a puddle of oil on the ground when landing, which slows enemies down.
If Isaac walks over an oil puddle, it will ignite it and produce a flame that can ignite and spread to other oil puddles in close proximity.
Oil puddles shrink in size when their flame deals damage to enemies, and damage per tick scales with the puddle size. The flame initially deals 22 damage, then 16.5, then 2x11, for a total of 60.5 damage.
Both the oil puddles and flames disappear after 5 seconds.
The flames cannot hurt Isaac.
Anything that can ignite regular gunpowder can ignite the oil as well.
How to unlock?
Defeat The Beast as Tainted Fiend.
Item pools
Modern Ouroboros can be found in the following item pools:
| Name | Weight |
|---|---|
| Devil Room |
1.0/1.0
|
| Greed Devil Room |
1.0/1.0
|
| Dire Chest |
1.0/1.0
|
Tags
The following tags are applied to this item:
| Id | Description |
|---|---|
| summonable | Can be summoned via  Lemegeton. |
| offensive | Can appear for  Tainted Lost. |
Special synergies
The following special synergies and interactions for Modern Ouroboros have been documented.
| Mod | Item | Synergy |
|---|---|---|
| --- | Abyss | Spawns a brown locust that creates oil puddles and automatically ignites them. |
* Note that not all possible synergies and interactions are listed here.
YouTube video
External links
- Check out the item description on the mod's external Wiki.
- Download Fiend Folio from the Steam Workshop.
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Sanguine Hook 
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