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Mom's Knife item
Mom's Knife is an unlockable passive item in The Binding of Isaac.
Description
Replaces Isaac's tears with a knife that pierces through enemies and can travel through obstacles.
Holding down the fire button increases the knife's range and power.
The knife deals 2x Isaac's damage 20 times per second while held, and 6x Isaac's damage at about 1/3 full charge. Damage quickly drops to 2x Isaac's damage when returning regardless of charge. Further charging only increases the maximum range.
Can be fired diagonally by holding down 2 firing buttons at once.
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 Isaac.
Transformations
Item pools
Mom's Knife can be found in the following item pools:
| Name | Weight |
|---|---|
| Treasure Room |
0.2/1.0
|
| Devil Room |
1.0/1.0
|
| Mom's Chest |
0.1/1.0
|
| Greed Treasure Room |
0.2/1.0
|
| Greed Devil Room |
1.0/1.0
|
| Old Chest |
0.2/1.0
|
Tags
The following tags are applied to this item:
| Id | Description |
|---|---|
| summonable | Can be summoned via  Lemegeton. |
| mom | Contributes towards the Yes Mother? transformation. |
| offensive | Can appear for  Tainted Lost. |
Special synergies
The following special synergies and interactions for Mom's Knife have been documented.
| Mod | Item | Synergy |
|---|---|---|
| --- | Abyss | Spawns a locust that is 50% larger, and deals damage once every 5 ticks instead of 7. |
* Note that not all possible synergies and interactions are listed here.
External links
- Check out the item description on the external Isaac Wiki.
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