Strange Key is an unlockable trinket in The Binding of Isaac, added in the Repentance DLC.

Unlocks the passageway to Blue Womb regardless of the run's duration.

Using Pandora's Box while holding the trinket will ignore the regular effects of the box, and instead spawn 6 higher quality items from a set of item pools, consuming both the item and trinket in the process.

The items are chosen from the following pools: Treasure Room, Shop, Boss, Devil Room, Angel Room, Secret Room, Library, Golden Chest, Curse Room, Planetarium.

The Treasure Room pool has a much higher chance to be chosen than the others that have an equal chance.

This page shows information as of the latest Repentance release.
To see latest up-to date information about this trinket for the new Repentance+ (Online Co-op) DLC, check this page instead.

Defeat Isaac, ???, Satan, and The Lamb as Tainted Eve.

The following tags are applied to this trinket:

The following special synergies and interactions for Strange Key have been documented.

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

• Check out the trinket description on the external Isaac Wiki.