Rune Bag is an unlockable familiar in The Binding of Isaac, added in the Afterbirth DLC.
Spawns a familiar that follows Isaac and drops a random rune or soul stone after clearing 7 or 8 rooms (alternating).
This page shows the latest information as of the new Repentance+ (Online Co-op) DLC.
To see information about this item for the previous Repentance version, check this page instead.
Defeat Isaac as Lilith.
Rune Bag can be found in the following item pools:
Name | Weight |
---|---|
Treasure Room |
1.0/1.0
|
Secret Room |
1.0/1.0
|
Greed Treasure Room |
1.0/1.0
|
Greed Secret Room |
1.0/1.0
|
The following tags are applied to this item:
Id | Description |
---|---|
summonable | Can be summoned via ![]() |
offensive | Can appear for ![]() |
nocantrip | Not available as card effects during the Cantripped! challenge. |
The following special synergies and interactions for Rune Bag have been documented.
Mod | Item | Synergy |
---|---|---|
--- | BFFS! | Drops a rune every 6 rooms. |
* Note that not all possible synergies and interactions are listed here.