Mystery Potion (S) - A potion that allows players to simultaneously recover HP and MP and was formerly bought as a pack of three for 50 Attendance Points. For demon characters, such as Dio and Rufus, this will also recover AP. This item is most effective on a character level 20 and below.
As of Season V, Mystery Potions of any size are no longer in stores. Although they cannot be purchased, they may sometimes be earned through server events and some mini games.