Court of Farondis
The good thing about the Legion factions and their pets is that the best way to unlock them is to just properly quest in the related zones. So, in this case, be sure you have the Azsuna Matata as you leveled, and if you didn’t get it, to go back and get it.
Why do you care about Azsuna? Well, for the Court Scribe!
The good news is that you really only need to be Revered with this faction, which you’ll get really close to after finishing the zone achievement. Then you should be able to push into Revered with some emissary days on the faction.
Once you hit that revered status, go visit Veridis Fallon to get your prize.
The Court Scribe itself is a pretty straightforward Magic family pet. Its two non-family abilities are both from the Undead family (Shadow Shock and Curse of Doom).
The bonus, of course, is once you hit Exalted you can then start on the random chance of prestige rewards and maybe, eventually, if you’re lucky, you’ll get the Cloudwing Hippogryph!