Aging/Deaging

You attempt to speed up or reverse the natural aging process of a creature. If the target's unwilling, it can make a Constitution save. On a success, the spell has no effect, and the material component isn't consumed. A creature who doesn't age isn't affected by the spell.

Age. The target ages 5d4 years, and its max lifespan increases by that amount.

Deage. The target becomes 5d4 years younger, though its age always must be a natural number.

All effects can be reversed by Greater Restoration.