Black R Key is a consumable in The Bimbing of AIsaac: Reedged, a mod for The Binding of Isaac.

Functionally identical to R Key.

Despawns if Isaac leaves the room or tries to bring it to another room.

Can be moved between rooms using Moving Box.

Does not appear naturally.

• Download The Bimbing of AIsaac: Reedged from the Steam Workshop.