Dark Brotherhood Armor is a light armor, dark in appearance, and about 60% as strong as glass armor. It is only worn by Dark Brotherhood Assassins, part of the Tribunal Main Quest. There are no loose samples, and the set lacks a shield. Early in the game, the armor retrieved from repeated attacks by Dark Brotherhood assassins can provide some easy and steady income if you are able to easily take them down. However, this becomes harder to do as you gain levels because eventually the assassins will get better weapons and start appearing in groups.