The search for Patch 10.1.5’s Warlock Pet Customization continues. Another fiery red version of the new Felhunter model, the Xorothian customization, has been found!
Thanks to BaalTheWarlock for the tip.
Grimoire of the Xorothian Felhunter
The Grimoire of the Xorothian Felhunter can be found in the Portal Keeper Hasabel boss encounter room in the Antorus, the Burning Throne raid on any difficulty including LFR, but there’s a few additional requirements.