Vibrant Bulb is a trinket added in The Binding of Isaac: Afterbirth † expansion.
Effects
- Increases all stats while Isaac's active item is fully charged:
- +0.25 speed
- +0.75 range
- +0.20 tears
- +0.10 shot speed
- +0.50 damage
- +1 luck
Notes
- The trinket creates no effect if Isaac has no active item.
- Active items that are reusable indefinitely without a charge bar, such as
How to Jump, will allow Vibrant Bulb's effects to be permanent (until the active item is swapped out). - Vibrant Bulb is slightly less than half as powerful as Dim Bulb; however, its effects are active more often.
- Error: The given collectible ("Glowing Hour Glass") does not exist., when used, will not make the Vibrant Bulb inactive and will still provide the bonus until it has one bar of charge.
- Having additional charge beyond full with The Battery does not provide an additional bonus.
- If two active items are held (Schoolbag), the one currently active must be at full charge for the trinket to take effect (the other need not be).
In-game Footage
 Active Item Modifiers
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 The Binding of Isaac: Rebirth
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