The appearance of the Blackstone Fortresses immediately drew the attention of everyone on the Cadia battlefield, humans and daemons alike.
These Blackstone Fortresses were comparable in size to small planets. Their overall forms possessed a peculiar, layered four-sided structure, their visible surfaces covered in countless intricate, perfectly geometric prisms, ravines, and platforms.
They had no conventional thruster exhausts, yet they glided effortlessly through the void with a silence and elegance that defied physical intuition.
As they arrived on the battlefield, rings of visible gray-white ripples spread outward from the six Blackstone Fortresses like waves upon water.
Wherever those ripples swept across the Cadia sector, the blue-violet and crimson radiance produced by Warp storm contamination swiftly began to fade.
With the aid of the six Blackstone Fortresses, the immense pressure upon the Cadia defenses finally began to lessen, and the Warp daemon host's offensive cooled as though it had briefly gone dormant.
"By the Emperor, the Warp energy readings detected across this battlefield have dropped by 37% in just half an hour."
"As long as the Blackstone Fortresses can maintain their suppressive effect, we can push back to the first defensive line that was overrun."
"Those pointy-eared Aeldari finally came through for once."
"They actually managed to produce six Blackstone Fortresses? I knew those Aeldari had plenty of hidden cards. A starving camel is still bigger than a horse—anyone who underestimates them will pay dearly for it."
Perturabo stared excitedly at the fluctuating figures and curves on the screen. With a primarch's sensitivity to data, he could discern the changing balance between the Warp and realspace from the numbers alone.
"Compared to our former policy of indiscriminate extermination toward all xenos, Lox's strategy of suppression first and alliance afterward does indeed have immense merit."
Dorn saw further still. He realized that