Birthday Card is an unlockable consumable in Red Baby, a mod for The Binding of Isaac.

Gives the Birthright effect for the current floor.

Some characters have a different effect instead:
• Cain - Teleports Cain to a good Arcade Room.
• Eden - Gives a random item effect for a floor.
• Jacob and Esau - Gives a copy of a random item from the other twin.
• Tainted Isaac - Drops 4 of his items to the floor. They get affected by Tainted Isaac's reroll mechanic.

Defeat Ultra Greedier as Tainted !!!.

The following special synergies and interactions for Birthday Card have been documented.

* Note that not all possible synergies and interactions are listed here.

The following sounds are related to this consumable.

• Download Red Baby from the Steam Workshop.