With the World of Warcraft; The War Within Pre-Launch Event now live, players can get the intro quests that lead to Silithus. Magni is knocked unconscious trying to commune with the Worldsoul and taken to Dalaran to recover.
Khadgar alerts you the Visions of Azeroth have grown stronger and now manifest into the living realm as Remembered Memories. Stop the Remembered Onyxia in Dustwallow Marsh, the Remembered Firelord in Searing Gorge, and the Remembered Lich King in Dragonblight.
Below, these videos capture the Daily Quest, rewards, each of the Lingering Memory mini-events, and the final bosses. Click the images to launch YouTube (1440 HD).