Use Prismatic Orbs to permanently increase a 10★ unit's maximum level.
Prismatic Orbs can only be used on units that are 10★ rarity.
By default, the maximum level for a 10★ unit is 200. Prismatic Orbs can be used to increase the unit's maximum level to 240, which is an additional 20 levels after using Aurora Essences. Each Prismatic Orb increases the unit's level cap by one level, and a maximum of 20 Prismatic Orbs can be used per unit.
Note: 10★ units must have their max level raised from level 200 to 220 through use of Aurora Essences before Prismatic Orbs can be used.
Other Level Break Items
For 12★ rarity units, please refer to Empyreal 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.