Rusted Key is a trinket.
- Gives a 10% chance of changing the room drop reward to a key.
- Opening chests and destroying tinted rocks, Slot Machines, or Fortune Teller Machines has a chance of adding a key to the rewards.
- In the original Binding of Isaac, this trinket was broken and didn't do anything.
|Cards and Runes|
|The Binding of Isaac: Rebirth|
|Achievements||Attributes||Bosses||Cards and Runes||Challenges||Chapters|