In-game pickup line
“What could it open?”
Mechanics
What Strange Key does
- Opens access to the Blue Womb regardless of the usual timer.
- Using Pandora's Box consumes the trinket and creates several items from random pools.
Achievement #558
How to unlock it
Earn the Isaac, ??? (Chest), Satan, and The Lamb completion marks as Tainted Eve.
Unlocking an item and finding it during a run are separate steps.
Explore more unlocksIn a run
Practical note
Hold it through Mom's Heart or It Lives if you are aiming for Hush but are clearing floors slowly.
Reference
Game data and sources
The trinket ID, 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.
