So it may be worth it to re-sub just to enjoy this content as a 5-man.
The Return to Karazhan is a dungeon located in southern Deadwind Pass in the Eastern Kingdoms, designed for level 110 characters. It prominently features the story of the Last Guardian, , as well as his apprentice, .
Return to Karazhan features many encounters found in its spiritual predecessor, such as , , , and . It also features new encounters and original story elements, including the battle against the twisted shade of the Guardian Medivh and a new, fearsome Legion commander, known as , who intends to anchor the tower into the Twisting Nether and turn it into a second major gateway for the Burning Legion to flood Azeroth with their unholy forces.
The instance was originally released with Patch 7.1 as a Mythic-only dungeon. With Patch 7.2 the dungeon was also made available in Heroic and Mythic Keystone modes, both of which see the dungeon split into two wings – Lower Return to Karazhan and Upper Return to Karazhan.