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Beyond
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Entomologist Manual item
Entomologist Manual is an unlockable active item in Beyond, a mod for The Binding of Isaac.
Description
Turns Blue Flies, Locusts, Blue Spiders, and Arachnids into other versions of themselves.
Spawns 1 or 2 Blue Flies or Spiders.
How to unlock?
Defeat The Lamb as The Researcher.
Transformations
This item contributes towards the Beelzebub transformation. Collecting 3 items from this set will grant Isaac flight, converts small enemy flies into Blue Flies, and permanently charms larger enemy flies.
This item contributes towards the Spider Baby transformation. Collecting 3 items from this set will spawn a spider familiar that applies random status effects when it comes in contact with enemies.
Item pools
Entomologist Manual can be found in the following item pools:
| Name | Weight |
|---|---|
| Treasure Room |
1.0/1.0
|
| Library |
1.0/1.0
|
| Greed Treasure Room |
1.0/1.0
|
| Ultra Secret Room |
1.0/1.0
|
| Rotten Beggar |
1.0/1.0
|
Tags
The following tags are applied to this item:
| Id | Description |
|---|---|
| book | Contributes towards the Bookworm transformation. |
| fly | Contributes towards the Beelzebub transformation. |
| spider | Contributes towards the Spider Baby transformation. |
| offensive | Can appear for  Tainted Lost. |
Special synergies
The following special synergies and interactions for Entomologist Manual have been documented.
| Mod | Item | Synergy |
|---|---|---|
| --- | The Book of Belial combined with Judas' Birthright | Spawns 2 additional Locusts of Death. |
* Note that not all possible synergies and interactions are listed here.
External links
- Download Beyond from the Steam Workshop.
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Amblyopia 
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