Rewind Spring
From Icaruspedia, the high flying Kid Icarus Wiki
The Rewind Spring is the location of the boss Pandora and her human form, Amazon Pandora in Chapter 22: Scorched Feathers. It is found in the City of Souls and can be used to revert the effects of time on a person. How much time is eradicated off the person is subject to how much you spend in the spring and what parts of your body dip into it. Palutena sends Dark Pit on a mission to dip the wingless Pit in the Rewind Spring. When he gets there, though, Pandora releases herself from his wings and Dark Pit is forced to fight. After the first battle, Pandora throws herself into the Spring and it reverts the curse placed upon her. Now she is titled as Amazon Pandora, and has a different moveset, occasionally summoning Pandora's Boxes. Once she is defeated, Dark Pit dips Pit in the Rewind Spring, and Pit's wings are restored.
Idol Description
Any creature that soaks in the Rewind Spring can roll back the effects of time. And at first glance it does seem like the spring reverses aging, thereby bestowing immortality. Yet those who stay for too long may find their entire lives erased.
