Mystic crystals are a resource associated with the Ancient Relic building. Their only use is for upgrading spells which improves your Spell Edges and mercenary stats.
Obtaining Mystic Crystals[]
Mystic crystals are gained from winning fights in Campaign Clash. Players can also gain them through:
- Mystic Shop
- Taking part in various Events
Spending Mystic Crystals[]
Currently, mystic crystals are only used in Spell Learning to upgrade spells and mercenary stats.