Due to some wild magic fun, one of my characters is now 9 years old. To be a nice, kind DM, I decided it would not impact any of his combat stats, only affect social situations [mostly for the sake of fun, as nobody wants to have their character turned useless because of random chance, but there needed to be some impact.]
One of my other players has a potion of longevity, and noticed its wording states that you will be reduced to a minimum of 13 years of age. RAW it seems that this de-aging potion would turn a 9 year old into a 13 year old, regardless of the roll.
That doesn't seem quite right to me, but I don't want to unilaterally decide that it won't work without some thought.
How does the Potion of Longevity affect a character who, before ingesting the potion, is younger than the minimum age that the potion typically reduces a character to?