Flowers of Sultana

In the peaceful desert town of Iram, there exists a Soul Stone that grants power and prosperity to all. Each year, they hold a festival celebrating their town's greatest hero and how he secured the Soul Stone for them--except this year. The Stone is dying and there may no longer be a way to revive it except to kill the final djinn in the world... Is there a way forward or must Iram go through this endless cycle forever?