Eternal Father
Grass rose to meet His foot as He stepped through, the stale air of the vault giving way to the vibrant odor of a world teeming with life. Trees of brilliant oranges and blues swayed in the breeze, and the Force was strong. Mountains loomed large against the horizon, impossibly suspended in the air above the ground. Everywhere the rules of physics were bent, impossible formations of utterly alien geometry, so dazzling that the mind could barely comprehend the patterns.
Others slowly began to join Him, first Demiurge, and then Kaahlil. Sith and Imperials alike moved through the gap to cross the bridge into the realm of Mortis. Vera Noble, her task complete, had been left behind in the vault to suffer through the lingering effects of the drug that had been pumped into her. The guard about her was sparse, ineffectually light, for the Dark Lord did not lie that He would allow her to return to her mother and father once she'd done what He'd asked. Though it had come through coercion, she had fulfilled her end.
"I do not like it," spoke Kaahlil, "You should have brought Vera with us, Father. You told me that she would be mine." Carnifex didn't even look at His son, His eyes fixed upon the distant mountain range. "And she will, my son. It matters not if your other and his woman find her in the vault, for they will be drawn by duty to follow us. When we kill them in this world, then you can take your prize." This seemed to mollify Kaahlil, who again returned to quiet. Of course, the Dark Lord had no intention of keeping true to His word with Kaahlil, not that the fool would ever discover that he'd been tricked. The Dark Lord's plan for the Dark Mirror far eclipsed any bitter desire the wretch harbored, for he had been groomed for the exact moment that was to come.
Carnifex addressed the assembling Sith and Imperials without facing them, "Line up in parade formation, my faithful. We will march upon the monastery at the mountain's summit, and we will take what is ours. The Day of Reckoning is at hand." There arose a mighty cheer, and, gradually, a long column began to ascend the mountain. Like before, the Dark Lord moved at its head, the astrolabe carefully cradled in His hands.
But they would not be the only ones to become aware of the gateway's opening, for the very presence of the Butcher King in this realm was an aberration. Mortis had once cast Him out before, when He'd accidentally been drawn into Mortis many, many years ago. But this time, it could not so easily dislodge Him, for He held in His hands a power wielded only by the ancient Celestials. With it, He could potentially unmake the galaxy, and the Force itself cried out in alarm to all those whose hearts were bent towards balance and justice.
The Light called upon its Sword and Shield, and all those who stood in unison against the Dark.
For the preservation of life, and the sanctity of the galaxy.