It looks like she's behind a statue and about to wreck stuff Deathwing style.
If that still is even legit, its obviously not an orc nor in the past just given the architecture.
At this point we can safely confirm that Alexstraza will be captured by Alternate Universe Garrosh somewhere in Mechagon.
The thing does have a very statue-esque pose.
Formerly known as Arafal
Oh wait, the Dragonmaw clan orcs are grey. It's probably a flashback.
It would make sense if the Dragonmaw or Vrykul went to the Dragon Isles and started enslaving dragons.