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Cain's Other Eye item
Cain's Other Eye is an unlockable familiar in The Binding of Isaac.
Description
Spawns a familiar that follows Isaac and copies all of his tear modifiers/stats, but with a 25% reduction in damage, unless playing as 
Lilith or 
Tainted Lilith.
The familiar fires randomly in the cardinal directions.
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?
Complete Boss Rush as Cain.
Item pools
Cain's Other Eye can be found in the following item pools:
| Name | Weight |
|---|---|
| Treasure Room |
1.0/1.0
|
| Greed Treasure 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 Cain's Other Eye have been documented.
| Mod | Item | Synergy |
|---|---|---|
| --- | BFFS! | deals 50% more damage than Isaac. |
* 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.
Cain's Other Eye
• Familiar that bounces around the room, firing shots with Isaac's tear effects
• Tears deal 75% of Isaac's damage
• Abyss: x1 locust 1x Isaac's damage
External links
- Check out the item description on the external Isaac Wiki.
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???'s Only Friend 
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Mongo Baby