Guilliman and the other Primarchs had all witnessed with their own eyes the terrifying sight of mortals being corroded by the Warp.
Without protection, the moment those mortals came into contact with the Warp, they would mutate in an instant, growing malformed limbs and eyeballs, and even their minds would be destroyed.
They were corroded from flesh to soul, becoming slaves of the Chaos Gods—or, rather, humanoid daemons.
It was essentially an irreversible transformation, meaning their souls had been completely plundered by the Chaos Gods and cast into eternal suffering and torment.
No one wanted to see that, even if it was a human experiment concerning the Warp.
No matter how one looked at it, this was the kind of heretical experiment that would have been intolerable in the past, the sort that required calling an Inquisitor directly.
If this were a large-scale experiment, perhaps even the Grey Knights would be deployed.
If The Savior had not verified Regubor's loyalty, Guilliman and the other Primarchs might already have drawn their swords to judge the heretics of the Dark Mechanicum.
"My lords, please do not worry.
"The Eye of Terror Third Warp Research Institute is a formal laboratory with a research license. It is also one of the Imperium's key laboratories concerning the Warp, and has passed the Department of Oversight's review."
Regubor noticed the Primarchs' displeasure and explained patiently, his tone rather proud. "Not only that, our laboratory has multiple technologies applied to the Imperium's production and warfare. We have also received the Imperial Science and Technology Award and the blessing of the Machine Goddess—"
He pointed at the holographic projection and added, "This Warp human experiment has extremely comprehensive safety measures, including more than ten types of barrier fields and holy relics. We also invited Grey Knights to serve