Blue Post
Original thread hosted on Blizzard's official forums.
Midnight Keystone Myth Achievement is Now Available
View on Blizzard forums:
https://us.forums.blizzard.com/en/wow/t/midnight-keystone-myth-achievement-is-now-available/2294723/5
About an hour ago, we enabled the Midnight Keystone Myth Achievement, and it has been going out to players who qualified.