Caves and account upgrades
Elemental Cave Magic Crystals
Spend torches on the crystal element needed for a costume’s potential upgrades.
Path of Adventure > Cave of the element matching the character whose potential you are upgrading.
Repeat with torches as they become available. Auto-runs unlock per cave difficulty after its boss is defeated; torch supply is limited and distinct from Cooked Rice.
Stop when the planned crystal costs are covered or another element’s potential upgrade becomes the priority.
Open a guide to find other locations and see what the item is used for.
Spend torches on the crystal element needed for a costume’s potential upgrades.