Prepare the Horde Dalaran key chain

The Horde attunement reported before launch runs through Prison Break In and Key to the City, with Stone Tokens and Dalaran Patrols, Bracers of Binding, Blood in the Streets, and Heart of Disruption. Accepting that last quest grants the Dalaran Sewer Key; you do not need to finish its dungeon objective before entering. These steps come from reports made before launch, so check them against your quest log. Blizzard’s development notes say the key chain does not grant unrestricted access to the city in the open world. The separate dungeon guide reports Alliance access through the Image of Archmage Modera. A complete loot route is not established here.