The Rod of Seven parts of the Rod of Law, was first introduced to the players as part of a contingency plan that Mordenkainen structured after the greater wish spell they tried to cast failed. Upon asking what it is and what is does, Mordenkainen told the players that it was once used to imprison Miska The Wolf-Spider
It was the centrepiece of a story concerning a long-ago “great war” between characters known as Wind Dukes of Aaqa and the Queen of Chaos. At the time the artifact was in one piece, and was known as The Rod of Law. In the story, the Rod of Law was used in the Battle of Pesh to imprison the Queen’s greatest general, a demon known as Miska the Wolf-Spider, Prince of Demons. The rod was broken into seven fragments during this conflict, and the seven individual pieces were scattered across the world. - Mordenkainen