Has anyone figured out where the entry point for this Vagary battlefield is?
It's a real mystery. This is given to you once you clear the Deathborne, Duskbrood, and Brash Gates of Vagary by the same NPC who gives you entry items for all of the aforementioned. As it stands we have access to 119 Empyrean Feet/Head/Hands unlocked while Legs and Body remain locked, clearly behind the clears of Perfidien and another yet-to-be discovered NM. It's logical to assume that the battlefield with Perfidien in it is accessed via this Prototype Pearl of Ashen Wings but we cannot actually find where the "Exetant Gate" mentioned in the description of the KI is. It's also worth noting that the .dat and icon descriptions for Hades Claw, Dark Matter, Tartarus Chain, and I forget the name of the fourth material (two of which are presumably upgrade materials) are also in the game.
Could it be that SE have actually sold us short this update and have purposefully restricted the ability to fully reforge a 119 Empyrean set? If so that's an incredibly shitty thing to do and is frankly a huge tease. Giving us the Key Item AND the Records of Eminence objective but giving us no way to access the content because they don't want people making so much progress so soon, basically dragging things out.
Have they indeed done this or has someone found the access point?