Raven Queen Messenger

Later dev post said White & Purple are broken, but Red is not. Not sure about Green.

Hall of Heroes
If you try to talk to her without 625,000 Reaper Experience, she will reply:
 * Raven Queen's Messenger: The Raven Queen awaits the day when your life inevitably ends. As yet, you are beneath her notice. Return when you have at least 625,000 Reaper Experience.