# Power Spring During the Power Spring, missions cost less energy. The discount is shown in the announcement, for example −50%. ## Rules - The discount applies to Story, Shadow Journey, Elemental Realms and Prism Rift. - Costs are rounded up, a mission costs at least 1 energy. - Rewards and XP of the missions stay the same. ## Announced Announcement of a Power Spring ## Running At the top the indicator in the header, below it the bar at the missions with the energy saved so far. Running Power Spring: header indicator and bar at the missions Announcement, reminder and the notice when you open the game are covered under [Events](https://mebulalegends.bitmeup.com/wiki/en/guide/events/).