Binding of Isaac: Rebirth Wiki
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(in Repentance)

Forgotten Lullaby is an unlockable trinket added in The Binding of Isaac: Repentance.

Effects[ | ]

  • Doubles the rate of fire of Isaac's familiars.
    • Familiars with charged shots will have their charge time halved. The recovery time between shots is not affected.

Notes[ | ]

Interactions[ | ]

  • Golden Trinket Golden Trinket / Collectible Mom's Box iconMom's Box : No effect.
  • Collectible Incubus iconIncubus / Collectible Twisted Pair iconTwisted Pair: As the familiars depend on Isaac's fire rate, Incubus and Twisted Pair work normally up to moderately high fire rates around 10. Beyond that, however, Forgotten Lullaby starts to lose effect: at 27.5 fire rate e.g. achievable with Collectible Soy Milk iconSoy Milk there no longer is any improvement and going even higher the trinket becomes detrimental, halving the familiars' damage output at the absolute maximum of 120 fire rate.
  • Character Tainted Lilith iconTainted Lilith: No effect on her special Collectible Gello iconGello.

In-game footage[ | ]

Trivia[ | ]

  • This trinket was originally called Song of the Siren in Antibirth.
  • "Forgotten Lullaby" is the title of the secret room theme in Mudeth's original soundtrack for the Antibirth mod.


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