Or you won’t be able to do the endgame Campaign that unlocks Sparks of Ingenuity.
I repeat, you are hardlocked from starting the endgame campaign, ever.
To be even more clear : If you are still leveling on an alt, pick Valdrakken on the command table before you reach level 70!
See the links in this thread: Dragon Isles Emissary
I have submitted a ticket and a bug report.