Master of My Domain is a location-based challenge in Captain Scarlett and Her Pirate's Booty. To perform this challenge in Hayter's Folly, it is required to locate and use Sandman's telescope. It is worth 4 Badass Rank.
This challenge is completed by using the telescope in Sandman's Overlook, an area that is reachable after Sandman and Big Sleep are defeated. The telescope is on top of a wooden ledge that overlooks the sulphur hot springs. Using the telescope costs 5 dollars. The challenge will be rewarded upon exiting the telescope view.
- The view through the telescope is only a framed photograph of Captain Scarlett, which is hanging on a distant wall.
- The challenge name is a reference to the Seinfeld episode, "The Contest".