Base game
- Isaac (Repentance+)
- Isaac (Repentance)
-
Mods (0 • hidden)
- 21 Trinkets
- A Bushel of Burdens & Blessings
- Andromeda
- Ascension
- Bael
- Balatro Jokers
- Baphomet
- Battle Fantasy
- Benevolence
- Benighted Soul
- Beyond
- Birthcake
- Birthcake: Rebaked
- Brown Shapiro's Addons
- Chocolate Mod
- Community Remix
- Curiosity Crate
- D!Edith
- Damnation
- Dark Vaults
- Daydream all Day
- Doki Doki
- Eclipsed
- Elitium
- Ena Mod
- Epiphany
- Fiend Folio
- Foks' Booster Pack
- Fruity Rooms
- Glacier's Laboratory
- Godmode Achieved
- Heaven's Call
- Insane Pain Mod
- Inscryption Card Pack
- Job
- Joseph
- Kicks and Giggles
- Lazy MattPack
- Library Expanded
- Lost and Forgotten
- Malware & Spam
- Martha of Bethany
- Mastema
- Me's Very Rocky Collection
- Minmaxers Anonymous
- More Penny Trinkets
- More Unus Cards
- Neapolitan Pack
- Painted Paths
- PJJ & Niro's Collection
- Pop Pack
- Potato Packs
- Preyn's Collection
- Red Baby
- Repentance Negative
- Repentance Plus
- Reshaken
- Restored Mods
- Revelations
- Reverie
- Reverie: Make Good Omissions
- Road to Enlightenment
- Sacred Dreams
- Samael
- Sewing Machine
- Sweet Halloween
- The Bimbing of AIsaac: Reedged
- The binding of Neuro-sama
- The Forbidden Suits
- The Miles Mod
- The Sheriff
- Virtue Items
- Warp Zone
22 more currently being worked on!
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Foks' Booster Pack
▾Table of Contents▾
Happy Fly item
Happy Fly is a familiar in Foks' Booster Pack, a mod for The Binding of Isaac.
Description
Spawns a fly familiar that moves randomly around the room.
When coming into contact with Isaac, grants 1.5 seconds of invincibility.
Transformations
Item pools
Happy Fly can be found in the following item pools:
| Name | Weight |
|---|---|
| Treasure Room |
1.0/1.0
|
| Greed Treasure Room |
1.0/1.0
|
| Baby Shop |
1.0/1.0
|
| Key Master |
1.0/1.0
|
Tags
The following tags are applied to this item:
| Id | Description |
|---|---|
| summonable | Can be summoned via  Lemegeton. |
| monstermanual | Can be summoned via  Monster Manual. |
| fly | Contributes towards the Beelzebub transformation. |
Special synergies
The following special synergies and interactions for Happy Fly have been documented.
| Mod | Item | Synergy |
|---|---|---|
| --- | BFFS! | Doubles invincibility duration. |
* Note that not all possible synergies and interactions are listed here.
External links
- Download Foks' Booster Pack from the Steam Workshop.
Battle Banner 
Demise of the Faithful 
Appetizer 
Grocery Bag 
Toy Shovel 
Del Key