Mana Stones are one of the main currencies used in AOE Defense. They can be obtained as basic rewards from Scenario areas, Dungeons, Arena, as well as from completing Daily Missions.They can also be purchased using Crystals, roll a gacha. Additionally, if you roll gacha, . Other sources include the Victory Temple it may provide a set amount over a period of time.
Mana stones could be used to power-up your characters.