Mana Prisms are a rare currency that can be exchanged at Da Vinci's Workshop for various items.

The primary ways to obtain Mana Prisms are by completing Daily Event Quests and also by Burning 3★ Cards( Servants, Craft Essences, Experience Cards or Status Up Cards). They are also occasionally awarded during events or as Login Rewards. See Rare Prism for 4-5★ burnt servants.