Protection for the wearer and a toothache for anything that would try to bite them, both provided by this magical amulet.
OK, so being petrified for 10 minutes probably isn't great. Chances are most predators aren't going to keep trying to bite a statue for 10 minutes though.
This was originally created in my Wednesday night game, a gift from a hag for a certain well-fed duck that the party had been bringing with them for a while.