The Silver Key is an unlockable active item in Benighted Soul, a mod for The Binding of Isaac.

Can only be charged by cleaning rooms.
Can be fully charged twice.

While held In a new level, all rooms with the last-recorded type will be rerolled into normal rooms.

On use Records the current room (only a few can be recorded) and game timer.

If recorded, try reset the closest room into recorded one, make game timer become recorded one, and reset the record.

Rooms can not be reset:
• Unbefitting shape or doors position.
• Starting Room.
• Boss Room.
• Gree Exit.
• Mirror Room (Quest for Knife Pieces).
• Mine Shaft Entrance (Quest for Knife Pieces).

These room types can be recorded:
• Miniboss Room.
• Treasure Room.
• Planetarium.
• Library.
• Shop.
• Curse Room.
• Sacrifice Room.
• Arcade Room.
• Chest Room.
• Dice Room.
• Isaac's Bedroom.
• Barren.
• Secret Room.
• Super Secret Room.
• Ultra Secret Room.
• Devil Room (with Judas' Birthright).
• Angel Room (with Book of Virtues).

Earn all completion marks on Hard Mode as Benighted Lost.

The Silver Key can be found in the following item pools:

The following tags are applied to this item:

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

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

• Download Benighted Soul from the Steam Workshop.