Aurora Essence
Use Aurora Essence to permanently increase a 10★ or 11★ unit's maximum level.
By default, the maximum level for a 10★ unit is 200 and the maximum level for an 11★ unit is 220. Aurora Essences can be used to increase a 10★ unit's maximum level up to 220 and an 11★ unit's maximum level up to 240.
Each Aurora Essence increases the unit's level cap by one level, and a maximum of 20 Aurora Essences can be used per unit.
10★ units can additionally have their max level raised by another 20 levels through use of 
Prismatic Orbs, for a total potential level cap of 240.
11★ units can additionally have their max level raised by another 20 levels through use of 
Celestial Orbs, for a total potential level cap of 260.
Aurora Essences can can be obtained from the Bazaar, where they can be purchased for 100 Orb Points (OP) each, or from 11★ Sanctum Exchanges.
Other Level Break Items
For 12★ rarity units, please refer to 
Empyreal Orbs.
For 11★ rarity units, please also refer to Celestial Orbs.
For 10★ rarity units, please also refer to Prismatic Orbs.
For 9★ rarity units, please refer to 
Ichor.
For 8★ rarity units, please refer to 
Soma.
For 7★ and under rarity units, please refer to 
Ambrosia.
