[ddad]Rhythm Blacksmith is an unlockable challenge in Daydream all Day, a mod for The Binding of Isaac.

Key Furnace
NO! (gulped)

Note: this list does not include characters' default starting items.

Infinite basement layout.

Key Furnace combo persists between multiple uses.

There is no reward for completing the [ddad]Rhythm Blacksmith challenge.

Unlock Key Furnace.

• Download Daydream all Day from the Steam Workshop.