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Sharp Key item
Sharp Key is an active item in The Binding of Isaac, added in the Repentance DLC.
Description
On pickup +5 Keys.
On useIsaac holds a key above his head that can be launched by pressing a fire button, consuming a key from his inventory.
The key acts as a piercing projectile and deals damage to enemies equal to 5 × DamageStat + 30.
The key will open any locked doors (including Secret Rooms) and chests it hits, as well as open up Key Blocks, but will break upon impact with one, or by hitting an obstacle.
Enemies killed by the key have a chance to spawn the contents of a chest.
Keys inherit Isaac's tear effects.
Note
This page shows information as of the latest Repentance release.
To see latest up-to date information about this item for the new Repentance+ (Online Co-op) DLC, check this page instead.
Item pools
Sharp Key can be found in the following item pools:
| Name | Weight |
|---|---|
| Shop |
1.0/1.0
|
| Greed Shop |
1.0/1.0
|
Tags
The following tags are applied to this item:
| Id | Description |
|---|---|
| offensive | Can appear for  Tainted Lost. |
Special synergies
The following special synergies and interactions for Sharp Key have been documented.
| Mod | Item | Synergy |
|---|---|---|
| --- | Book of Virtues | Spawns key-like wisps in the middle ring that act as normal wisps despite their appearance. |
| --- | The Book of Belial combined with Judas' Birthright | Invokes the effects of  Razor Blade without dealing damage to Judas. |
* Note that not all possible synergies and interactions are listed here.
External links
- Check out the item description on the external Isaac Wiki.
Birthright 
Red Stew 
Genesis 
Booster Pack 
Mega Mush 
Knife Piece 1