

Basicly you would encounter some sort of boss but wouldn't defeat them. Those challenges were conclusions of the class storylines to upgrade artifact weapons. One of the perks of Mage Tower was access to special class challenges, different for each spec(there were some repeats but each spec from one class would have access to different one for each spec. Each one, when completed would give different perks. Players would basicly choose to donate resources to either Mage Tower, Command Center or Nether Distruptor. Basicly on Broken Shore players would do world quest and collect Resources that would be contributed to the war effort at the Broken Shore.

Back in Legion's patch 7.2 Blizzard introduced Broken Shore campaing, new class storylines and class challenges for exclusive time limited artifact weapon appearances.
