The Crumbling Root is a harvestable that can be found in the Nightmare. It can be found from various sources and locations throughout the Nightmare including but not limited to:
- A rare drop from a Nightmare Lantern.
- Being harvested from Fish Hall, Inside, Maze of Roots, Meeting Place, The Mansion, The Old Cave, The Old Mansion, The Supermarket, The Theatre, and The Vault.
In appearance, the Crumbling Root is a mushroom with beige antennas on top of a pile of degraded biomatter. Players can exchange Crumbling Roots for 3,600 gold each during the Gargoyle's Deals. If the player has no purpose for the Crumbling Root, it can be sold for 2,100 gold.