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▾Table of Contents▾
Brimstone Keys item
Brimstone Keys is an unlockable passive item in Benighted Soul, a mod for The Binding of Isaac.
Description
On pickup
+ 6 keys.
While held
Losing keys fires brimestone in 4 directions.
How to unlock?
Defeat Satan on Hard Mode as Benighted Lost.
Transformations
Leviathan transformation. Collecting 3 items from this set will grant Isaac flight and +2 Black Hearts.
Item pools
Brimstone Keys can be found in the following item pools:
| Name | Weight |
|---|---|
| Treasure Room |
1.0/1.0
|
| Greed Treasure Room |
1.0/1.0
|
| Curse Room |
1.0/1.0
|
| Devil Room |
1.0/1.0
|
| Greed Devil Room |
1.0/1.0
|
| Ultra Secret Room |
1.0/1.0
|
| Red Chest |
1.0/1.0
|
| Demon Beggar |
1.0/1.0
|
Tags
The following tags are applied to this item:
| Id | Description |
|---|---|
| offensive | Can appear for  Tainted Lost. |
| devil | Contributes towards the Leviathan transformation. |
Special synergies
The following special synergies and interactions for Brimstone Keys have been documented.
| Mod | Item | Synergy |
|---|---|---|
| Reverie |  Seija |
+ 1 Half Black Heart when triggered |
| Reverie |  Tainted Seija |
+ (Q4 level) Half Black Heart when triggered. |
* Note that not all possible synergies and interactions are listed here.
Trivia
External links
- Download Benighted Soul from the Steam Workshop.
Key Walker 
Spider Keys 
Mr. Dynamax 
Bob's Blessing 
Mr. Key 
Heat Keys