Blizzard has released a new cinematic for Patch 10.2.7: Dark Heart, in which Khadgar sends his old friend, Alleria, after the mysterious Harbinger. But what does Alleria already know? We break it down below.
The scene opens with Jaina Proudmoore, Lord Admiral of the Kul Tiran, and Khadgar, leader of the Council of Six of the Kirin Tor. They are within the Chamber of the Guardian in Dalaran, and are discussing the voices that people all over Azeroth have been hearing recently — which we learn have been named the Radiant Song.
We first saw evidence of the Radiant Song in the War Within announcement cinematic, where Anduin and Thrall discussed how they have been hearing voices from an unknown source.
Of course, we know the source of the voice is Azeroth's World Soul. For some reason, no one on Azeroth seems to have worked this out, despite the fact that Magni Bronzebeard did not keep the existence of Azeroth's World Soul a secret. Khadgar appears to have requested Jaina's help in finding out more — while she may no longer be a member of the Council of Six herself, she is still a mage and close ally of Dalaran after all.
What Jaina does know is that this Radiant Voice is not the same as the voices that her people are used to hearing from below — a references to the Tidesages of Kul Tiras, who follow the voice of the Tidemother. It's unknown who the Tidemother is, exactly, but this does seem to confirm she can't be Azeroth. Around the time of Battle for Azeroth, the voices the Tidesages could hear changed, causing many to fall to the Void. While this is a crisis that has since been solved, the fact that Kul Tiran's «voices from below» once referenced the Void also