From Guild Wars 2 Wiki
Augury's Shadow is the main Followers of Ascension camp in the Elon Riverlands. The Augury's Shadow Waypoint — leads right inside it.
Several members of the Followers can be found here, the most notable among them being Follower Kaidenna and Follower Lucius Anvilblade. There's also an Order of Shadows Agent maintaining three Bounty Boards.