Jar of Flies is an active item in The Binding of Isaac, added in the Afterbirth DLC.
While heldKilling an enemy adds a fly to the jar that can hold up to 20 flies at once.
On useReleases Blue Flies equal to the number of flies in the jar.
Kills made by Blue Flies, locusts and shooting familiars do not add flies to the jar.
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.
Jar of Flies can be found in the following item pools:
Name | Weight |
---|---|
Shop |
1.0/1.0
|
Greed Treasure Room |
1.0/1.0
|
Greed Shop |
1.0/1.0
|
The following tags are applied to this item:
Id | Description |
---|---|
offensive | Can appear for ![]() |
nocantrip | Not available as card effects during the Cantripped! challenge. |
fly | Contributes towards the Beelzebub transformation. |
The following special synergies and interactions for Jar of Flies have been documented.
Mod | Item | Synergy |
---|---|---|
--- | Book of Virtues | Using the Jar summons wisps instead of blue flies. Up to 5 flies are consumed at a time to summon one wisp, with stacking health and damage. Damage of the wisps decreases as they take damage. Enemies killed by wisps' tears will not add flies to the jar. |
* Note that not all possible synergies and interactions are listed here.