Unlock Location:
- Discover the Dissected Plateau sub-region of the Fadefields.
- Use the Zadra's Backup Plan (Fast Travel Station), available after the first few Story Missions.
- Right nearby is an Abandoned Auger Mine known as The Claim.
Farm Method:
- Defeat The Backhive, the boss of The Claim.
- Utilize the Encore Machine to farm The Backhive until
Cindershelly drops.