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Razor Blade item
Razor Blade is an unlockable active item in The Binding of Isaac.
Description
+1.2 damage for the current room.
-1 full red heart.
Subsequent uses in the same room will deal only half a heart of damage.
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 Satan as Eve.
Item pools
Razor Blade can be found in the following item pools:
| Name | Weight |
|---|---|
| Treasure Room |
1.0/1.0
|
| Demon Beggar |
1.0/1.0
|
| Curse Room |
1.0/1.0
|
| Greed Treasure Room |
1.0/1.0
|
| Greed Curse Room |
1.0/1.0
|
Tags
The following tags are applied to this item:
| Id | Description |
|---|---|
| nolostbr | Unavailable for  The Lost after obtaining  Birthright. |
| devilsacrifice | Can be found as a Sacrifice Deal in Devil Rooms. |
Special synergies
The following special synergies and interactions for Razor Blade have been documented.
| Mod | Item | Synergy |
|---|---|---|
| --- | Book of Virtues | Spawns red wisps in the middle ring that have 8 HP. |
| --- | The Book of Belial combined with Judas' Birthright | Activates the effects of  The Necronomicon alongside the original effect. |
* 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.
Razor Blade
• Damages Isaac to grant a damage up for the current room
• Unlimited use, but damages every time
• Damages red hearts before other heart types
• Abyss: x1 locust .5x Isaac's damage
• Book of Virtues: x1 middle wisp - 8 hp - 3 damage
External links
- Check out the item description on the external Isaac Wiki.
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