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Mystery Egg item
Mystery Egg is an unlockable familiar in The Binding of Isaac, added in the Afterbirth+ DLC.
Description
Spawns an egg familiar that follows Isaac. It cracks and turns into a random friendly enemy when Isaac is hurt.
Regenerates upon entering a different room.
Clearing more rooms without the egg cracking will results in more useful friendly enemies spawned. The most useful enemies are spawned after clearing more than 13 rooms without taking damage.
Note
This page shows information as of the latest Repentance release.
To see latest up-to date information about this item for the new Repentance+ (Online Co-op) DLC, check this page instead.
How to unlock?
Spawn 3 charmed (friendly) enemies in the same room.
Item pools
Mystery Egg can be found in the following item pools:
| Name | Weight |
|---|---|
| Treasure Room |
1.0/1.0
|
| Greed Treasure Room |
1.0/1.0
|
Tags
The following tags are applied to this item:
| Id | Description |
|---|---|
| nolostbr | Unavailable for  The Lost after obtaining  Birthright. |
| summonable | Can be summoned via  Lemegeton. |
Special synergies
The following special synergies and interactions for Mystery Egg have been documented.
| Mod | Item | Synergy |
|---|---|---|
| --- | BFFS! | The spawned enemy will be a champion variant, even if it normally cannot appear as one. |
* 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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