In-game pickup line
“???”
Mechanics
What Birthright does
- The effect changes by character rather than giving one shared stat increase.
- For example, Tainted Isaac gains four more item slots, while Magdalene gains a filled Red Heart container.
Achievement #431
How to unlock it
Defeat ??? (the Chest boss) as Jacob and Esau.
Unlocking an item and finding it during a run are separate steps.
Explore more unlocksIn a run
Practical note
Check your character's specific Birthright effect before deciding when to buy it.
Reference
Game data and sources
The item ID, quality and pool listings, icon, game-file tags, and short pickup line come from the extracted Repentance files. This effect explanation is an editorial summary checked against the references below. Repentance+ can differ.
