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Monster Manual item
Monster Manual is an active item in The Binding of Isaac.
Description
Summons a random familiar for the remainder of the floor.
Only familiars that have the monstermanual tag can be summoned.
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.
Transformations
Item pools
Monster Manual can be found in the following item pools:
| Name | Weight |
|---|---|
| Treasure Room |
1.0/1.0
|
| Devil Room |
1.0/1.0
|
| Library |
1.0/1.0
|
| Greed Treasure Room |
1.0/1.0
|
| Greed Devil Room |
1.0/1.0
|
Tags
The following tags are applied to this item:
| Id | Description |
|---|---|
| book | Contributes towards the Bookworm transformation. |
| offensive | Can appear for  Tainted Lost. |
Special synergies
The following special synergies and interactions for Monster Manual have been documented.
| Mod | Item | Synergy |
|---|---|---|
| --- | Book of Virtues | Grants a random familiar wisp in the inner ring, with 4 HP, similar to the ones given by  Buddy in a Box. |
* 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.
Monster Manual
• Summons a random familiar that lasts for the rest of the floor
• Abyss: x1 locust .75x Isaac's damage
• Book of Virtues: x1 inner wisp - 4 hp - 3 damage
• Book of Virtues: Random tear effects
External links
- Check out the item description on the external Isaac Wiki.
Odd Mushroom 
Odd Mushroom 
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Dead Sea Scrolls 
Bobby-Bomb 
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