You've just given me an idea for another omake…
The Oddly-Helpful Daemon
Daemonhuntress Ivixia glanced up at the Acolyte seated before her. Then down at the report in her hands. And then back up at the acolyte.
"Allow me to clarify what this report states. Your cover was blown."
Daniels added. "By one of the very Daemons we were investigating. The one that had a vague resemblance to a Blue Horror of Tzeentch, to be exact." The former member of the Krueger Death Corps added.
"And said Daemon, rather than slaying you on the spot, claimed that it couldn't help you… while simultaneously doing exactly that by giving you instructions to fill out a specific form, visit a specific office in a Tzeenchian institution, and hand that form to a specific person. And then it turned away and abandoned you in the street, totally unmolested."
"Yes. And when I recovered from the shock of being cheerfully given advice by a Daemon who'd known exactly what I was there for, I followed those instructions."
"…your tale is drifting dangerously close to heresy." The Inquisitor said slowly. "You know that, right?"
"It is heresy, period. And nobody is more keenly aware of that than myself." Daniels admitted. "But it is also true. And when I handed in the form, the cloaked administrator I handed it to returned to me with these."
Another stack of books, identical to the first stack that was already on the table (which Daniels had been sent down to retrieve in the first place, and had done so before his encounter with the Daemon). Ivixia's breath caught in her throat. Surely these heretics weren't foolish enough to…
"They're identical. I checked. And the first set was found in the public section of a library."
Normally, the knowledge that Daniels had even skimmed a work penned by Chaos Cultists would have merited an instant execution. But instead of drawing her sword, the Daemon Huntress flipped through the first few pages of the topmost book, Daemonology 101, a treatise on Daemons aligned with Cain. Each and every word risked corruption, but even so Ivixia couldn't help but note that the somewhat-vague details about the rituals themselves mentioned nothing about human sacrifice, and looked fairly tame in comparison to a typical Daemon-summoning rite. At least there was a warning on the inside cover, explaining in no uncertain terms that the Warp is not a toy and you should leave tampering with it to those who fully understood the consequences of doing so.
Having gathered what she needed, she turned to what claimed to be a second copy of Daemonology 101. Sure enough, when she flipped through the first few pages, she found the information contained within as perfect a match as the identical titles and covers implied.
"I have a question." Ivixia looked up from the heretical tomes. She opened her mouth to speak, but Daniels beat her to the punch in an uncharacteristic (albeit very minor) breach of protocol.
"Is there any particular reason why I am still able to draw breath?"
AN: Yep, the people of Slawkenberg have figured out how to summon Daemons cleanly, safely, and practically. And now the Imperium's even more fucked, despite Cain's subtle (albeit hilariously ineffective) efforts to rectify that.