Event
In 10,075 ZC, the Izzet League guildmaster discovered that Azor I had created a contingency plan that would take effect if the magic of the Guildpact was ever broken. An intricate network of leylines sprawled across the districts Ravnica, called the Implicit Maze, offered a test to the guilds. If they would cooperate to solve the maze, they would secure the power of a new Guildpact. That power was eventually bestowed upon Jace Beleren, who became the Living Guildpact. Any law that he verbally confirms becomes legally binding.