Fiend Folio: ReheatedModern Ouroboros"Voice like the devil"Passive item
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.
Costs 2 Heart Containers when found in a Devil Deal, or 30¢ in an Angel Shop.
Unlock: Defeat The Beast as Tainted Fiend.
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Unlockable Grants costume Has YouTube video Animated icon Favorite (?)

Note that this page shows the previous Fiend Folio version before the RELOADED update.

To access the latest update and new items, please check the Fiend Folio: RELOADED page.


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Download the Fiend Folio: Reheated mod for The Binding of Isaac