The sideburns of Pinkamena Diane Pie's father reign supreme over the Peninsula of Xura.
It was certainly an enormous revelation. The Land Of Pleasures Unattained had gone through a tumultuous history. Several hundred years ago, before the Second War Of The Great Old Ones, an ancient race called Man lived on Equus. They are remembered only because of the Genie that lies upon the moonbeams. The Genie once sailed a ship, that one could only board by walking on moonbeams. This White Ship would sail to Xura, and other mystical places unlike those of Equus.
A member of that race, a man, boarded the ship. He was an average man, but this peculiar race had a tendency to meddle in things far greater than themselves. This man did just that, and one night, after he returned from the White Ship, it crashed, and sank. By fault of Man, Xura and its neighbors wew distant and unreachable.
Thrackerzod rarely gave them any thought at all, but now, hearing that Xura had a new ruler, there must be a way to access it, and other places.
But was Pinkie a valid source of information?
Thrakerzod had thought long on that pink equine, and had indeed reached a conclusion on her character.
Pinkie Pie, for whatever reason, had heard the whispers of the Great Old Ones. The gods of Equus, and indeed of this universe, had decided to influence her. She had been driven mad by her knowledge of things outside her exsistence.
That was one hypothesis, but perhaps another was true. Pinkie's father may have been possessed (by way of his sideburns) by some powerful entity, who had control of Xura. Pinkie may have communicated with that entity.
Another, far more troubling explanation was possible. Perhaps...just maybe.......Twilight Sparkle had gained control of Xura. Considering the close magical ties between Pinkie and Twilight as Elements of Harmony, Twilight's adeptness at time magic, and Pinkie's obvious communication with an entity of some sort, Twilight may have found a way to Xura that did not require the help of the Genie.
This was troubling as Twilight already had control of Leng (maybe). The King in Yellow and Thrakerzod had uncovered more information about that incident.
Apparently, Twilight did rule over Leng with absolute power, and against the will of the populous. After one particularly horrible law (stating that one needed to put floral arrangements in their bathroom), the people of Thorabon revolted, being led by a charismatic leader. Perhaps Twilight then went to Xura, by dealing with the 'Sideburns Of Disdain'.
If all this was true, then Sparkle was gaining much power than her contract had ever intended. She had to be stopped.