Mischievous Monsters

An Old School Fantasy RPG adventure for low level characters. Compatible with the ACKs rules, but easily converted to other OSR games. Several leagues offthe main road is a portal to the realm of fairy; a ring ofstanding stones resting in a clearing surrounded by ancient trees. Once a year, from the full moon to the next full moon, this portal opens and allows the fairies to cross over, to wreck havoc and cause mischiefin the mortal realm.