Monster Manual is an active item in The Binding of Isaac.
Summons a random familiar for the remainder of the floor.
Only familiars that have the monstermanual tag can be summoned.
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.
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
|
The following tags are applied to this item:
| Id | Description |
|---|---|
| book | Contributes towards the Bookworm transformation. |
| offensive | Can appear for Tainted Lost. |
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.
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