The Ghoul Stars were simply too distant, and the Astronomican's faint light severely limited the reach of the God-Emperor's power.
Fortunately, Khorne's arrival had smashed Tzeentch's barrier to pieces. The God-Emperor could now pass through the shattered crystal and project his will onto his followers.
Since Perturabo had been somewhat resistant last time, the God-Emperor could not be bothered possessing these children. He merely told Celes to open her mind and prepare for his descent.
Celes gladly agreed. When she opened her eyes again, holy light bloomed from them.
"Praise of the Emperor!" The fanatical believers did not know what else to say. Even the Space Marines who had personally witnessed the God-Emperor's manifestation could barely restrain their excitement.
Celes spread her wings and slowly flew forward, landing at the very front of the battle line. Bathed in the light emanating from her body, Khorne's fortress slowly began to melt and vaporize.
"You... you are..." Rogal Dorn stammered. As he stared at Celes's figure, his eyes held nothing but disbelief.
Celes did not turn around, merely giving a quiet response. Though it was still Celes's gentle, beautiful female voice, the instant those words emerged, Dorn felt a familiarity he had known only ten thousand years ago.
That familiarity with his father softened the body that grief had left rigid. Yet seeing his mighty, majestic father possessing a winged little girl like some daemon still filled Dorn's heart with confusion.
"This... this cannot be..." Dorn's steps faltered as he backed away. For a master who held the line, this was something that should never have happened. Even if Perturabo struck him in the chest with a power hammer, Dorn would force his body upright and stand firm as a mountain.
"That's why I said the times have changed, Dorn." Perturabo spoke