Green Puzzle Key is a pickup in Fiend Folio, a mod for The Binding of Isaac.

Spawns a Green Ghost familiar that can open up a Green Colored Lock in the room.

The ghost will disappear upon leaving the room, and the key will reset position.

Unlocking the lock will make the key disappear.

• Check out the pickup description on the mod's external Wiki.
• Download Fiend Folio from the Steam Workshop.