Analysis and Speculation

"Even Khorne Daemons wouldn't be stupid enough to simply slug it out with the Orks, and this isn't the Warp. For a battle on this scale, there must have been an enormous number of Daemons."

"Clearly, someone summoned a Daemon army to block the Ork forces. Then something happened that caused the entire Daemon army to be abruptly banished."

Carson examined the battlefield carefully, analyzing the possible circumstances as his gaze settled on the tower at the edge of the piles of Ork corpses.

The extensive scorch marks left by Psychic Power on it were impossible to ignore.

For Iax, Psychic Power had no effect on him, and nothing unusual showed up in his energy vision either. He saw nothing wrong with a tower having energy clinging to it.

The Ultramarines who had accompanied them down were all Primaris soldiers, and none possessed the talent to become a Librarian.

Without Psychic Power talent, they had no way of realizing what was strange about the Ork structure standing in the middle of the battlefield.

Meanwhile, the information Nelson and the others had shared indicated that almost no other Ork units had been seen operating on the battlefield.

This also reminded Carson of research previously conducted by a certain Sage.

Ork Weirdboys (Psychic Power boys) unconsciously absorbed the peculiar WAAAGH! Energy emitted by nearby Orks. If they failed to release that terrifying energy in time, there were only two possible outcomes.

They either drove a large swath of the surrounding Orks mad, or burst from the Psychic Power building up inside them.

The tower was very likely some unique device with the same abilities as the Weirdboys.

Perhaps it had absorbed the energy spilling from the Orks around it, whipped into a frenzy by battle, and used it to attack or ignite