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Mastema
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Raven Skull item
Raven Skull is an unlockable active item in Mastema, a mod for The Binding of Isaac.
Description
Consumes all pickups in the room and grants a small, permanent damage up for each pickup consumed.
The amount of damage gained is based on the quality of the pickups, similar to Bag of Crafting.
Chests, Sacks, and pedestal items won't be consumed.
How to unlock?
Defeat Mother as 
Mastema.
Item pools
Raven Skull can be found in the following item pools:
| Name | Weight |
|---|---|
| Treasure Room |
1.0/1.0
|
| Curse Room |
1.0/1.0
|
| Greed Treasure Room |
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 Raven Skull have been documented.
| Mod | Item | Synergy |
|---|---|---|
| --- | Abyss | Gives a black locust that deals 125% of Isaac's damage and has increased speed. |
* Note that not all possible synergies and interactions are listed here.
External links
- Check out the item description on the mod's external Wiki.
- Download Mastema from the Steam Workshop.
Desecrated Heart 
Bloody Harvest 
Infernal Covenant 
Broken Dice 
Book of Jubilees