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Foks' Booster Pack
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Putrid Heart item
Putrid Heart is an active item in Foks' Booster Pack, a mod for The Binding of Isaac.
Description
On pickupSpawns a fly familiar that follows Isaac's movement with a 0.66 second delay.
On useCauses Isaac to teleport to the familiar, making him briefly invincible.
Teleporting onto an enemy deals 50 + DamageStat × 5 damage to the enemy.
The brief immunity can be used to enter Curse Rooms and open Spiked Chests for free.
Item pools
Putrid Heart can be found in the following item pools:
| Name | Weight |
|---|---|
| Treasure Room |
1.0/1.0
|
| Greed Treasure Room |
1.0/1.0
|
| Rotten Beggar |
1.0/1.0
|
Tags
The following tags are applied to this item:
| Id | Description |
|---|---|
| offensive | Can appear for  Tainted Lost. |
| nocantrip | Not available as card effects during the Cantripped! challenge. |
| uniquefamiliar | Cannot be duplicated via  Box of Friends. |
Special synergies
The following special synergies and interactions for Putrid Heart have been documented.
| Mod | Item | Synergy |
|---|---|---|
| --- | BFFS! | On teleport, fires 8 to 12 tears in a circle that deal 50% or 200% of Isaac's damage. |
| --- | Book of Virtues | No effect. |
| --- | The Book of Belial combined with Judas' Birthright | No effect. |
* Note that not all possible synergies and interactions are listed here.
External links
- Download Foks' Booster Pack from the Steam Workshop.
Atheos 
Box of Stevens 
Cigarette Pack