Having done all this, Carlos finally felt relieved, but his work was not yet finished. He still had to fulfill his agreement with Abaddon and let Chaos regain the upper hand.
Carlos held a fragment of history obtained from the Observer in his hand. Viewed from any angle, the fragment displayed the exact same scene.
Enormous doors bulged from flesh-like walls. Blood gathered through transparent pipes in the floor, forming winding rivers of blood, while the path beneath their feet was coated in mucus like a tongue. Hideous winged creatures occasionally swept past arches of white bone and perched upon racks made of ribs. Adeptus Custodes marched through this boundless horror. Even though they had been forged into powerful warriors without blood or tears, they still trembled uncontrollably in terror.
Every detail told the truth of the historical fragment. This was what the Vengeful Spirit had looked like during the Siege of Terra. The once-glorious warship had become the true Warmaster—Horus's den of evil, where he drew upon the power of the Warp. The blessings of the four gods borne by Horus had in turn nourished the Vengeful Spirit's transformation into a Warp entity. The current Abaddon only controlled the Vengeful Spirit's shell; he knew nothing of its Warp form.
Now, through the Observer's power, the true Vengeful Spirit that had once made the entire Imperium tremble, that had even terrified the Adeptus Custodes, would reappear in the world.
Heavy heartbeats spread through the void. Orks, humans, and Aeldari all heard the sound. The heartbeats grew louder and louder, spreading an intense sense of terror into every corner of the battlefield.
Even Space Marines, renowned for their steadfast fearlessness, went pale beneath those heartbeats. Jaghatai Khan was not frightened by them, but his expression was extremely grave. With a primarch's