The BBF is a passive item in The Binding of Isaac: Rebirth (TBOIR)
Effects
When you pick BBF up, you get a Familiar that flies around the room and explode if it touches an enemy, dealing massive damage to anyone caught in the blast.
BBF respawns after like 10 seconds
Character Appearance
Character has a big gray fly with a heart on its forehead roaming the room. This fly explodes if it touches a monster
