Falls River
Bridget says, "The truth can be funny all its own, you know... but I don't think Mittens is going to ever write "arrg" while being injured."
In older editions, doing so would require a concentration check.
The mayor is just baffled. "I knew magic had to be involved, but... well in any case. I will sign in the entries that have to do with this town. Be warned, though, your technique means that you could also trace signatures and thus, invalidate most of your book. So be sure that when you get people to sign, ask them to also put their seal on it. You can't trace wax, after all."
Actually, with mage hand and other cantrips, you can. And we have just come across a "why did I not think of this before?" for use of cantrips to conquer kingdoms.