I did not make this model, it is the Reforged Beta asset for Jennalla Deemspring.
I forget if I ported it from the Beta-only MDX900 format, it's been a while.
Edit: Now, after I uploaded this, somebody pointed out to me that some of the animations are busted. Specifically the weird Attack 2 animation was a problem. So, because of that, I have uploaded a third model that is modified from its original form with fan-made edits (although other than these changes my intention was to upload a direct 1:1 port of what was in the Reforged Beta).
These fan-made edits consisted only of deleting the glitched animations that were not working properly, so that now the model looks good in-game.
To confirm about which version this model came from, I double-checked and the MDX900 format model in the Beta Build 13594 matches this model exactly. So, although at the time of my original upload I was skeptical about the origin of the model on my hard drive and whether I remembered it correctly, I can now say with certainty:
This model is a direct port (MDX900->MDX1000) of the Blizzard Entertainment model that was included in the Reforged Beta Build 13594.