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Betrayal item
Betrayal is an unlockable passive item in The Binding of Isaac, added in the Afterbirth DLC.
Description
Allows enemies to hurt each other with projectiles.
When an enemy gets damaged by another enemy, they will attack that enemy instead of Isaac. At this point, the 2 enemies are able to deal contact damage to each other as well.
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 Hush as Judas.
Item pools
Betrayal can be found in the following item pools:
| Name | Weight |
|---|---|
| Treasure Room |
1.0/1.0
|
| Devil Room |
1.0/1.0
|
| Greed Treasure Room |
1.0/1.0
|
| Greed Devil 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 Betrayal have been documented.
| Mod | Item | Synergy |
|---|---|---|
| --- | Abyss | Spawns a pink locust that has a chance to charm enemies. |
* Note that not all possible synergies and interactions are listed here.
Internal item description
Below is the Internal Item Description as shown in-game.
Note that some stat changes are not displayed here. Please see the main description for the full effects.
Betrayal
• Enemy projectiles can damage other enemies
• Enemies may target and attack other enemies that damaged them
• Abyss: x1 charming locust .75x Isaac's damage
External links
- Check out the item description on the external Isaac Wiki.
Key Bum 
Rune Bag 
Seraphim 
Zodiac 
Serpent's Kiss 
Marked