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Sack of Sacks item
Sack of Sacks is an unlockable familiar in The Binding of Isaac, added in the Afterbirth+ DLC.
Description
Spawns a familiar that follows Isaac and drops a Grab Bag every 7 or 8 rooms (alternatingly).
Note
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.
How to unlock?
Defeat Ultra Greedier as Cain.
Item pools
Sack of Sacks can be found in the following item pools:
| Name | Weight |
|---|---|
| Secret Room |
1.0/1.0
|
| Greed Shop |
1.0/1.0
|
| Greed Secret Room |
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 Sack of Sacks have been documented.
| Mod | Item | Synergy |
|---|---|---|
| --- | BFFS! | Improves the drop rate to every 6 rooms. |
* Note that not all possible synergies and interactions are listed here.
External links
- Check out the item description on the external Isaac Wiki.
Camo Undies 
Duality 
Eucharist 
Greed's Gullet 
Large Zit 
Little Horn