Sorry for being late, my lord! Now, give the order to clear the intruders from the castle. Clear out the barricade to proceed. When the Aether bar is full, the hero will unleash their ultimate skill, which may turn the tide. Mage thunderstorms cover the whole battlefield. Change mages position to strike more enemies. Tap crystal to open the upgrade screen. Use crystal shards to level up the crystal. Idling rewards increase as the crystal upgrades. Repair the treasure vault to collect the crystal's idling rewards. Treasure vault - a room for collecting idling rewards that crystal coagulates regularly.