>>5360505I imagine the effect for a psychic race would be akin to the Pariah Nexus novel / Shadow in the Warp. More pronounced in the mitu than man.
It starts slowly, the astropaths feel a weight upon their mind, a subtle headache that won't go away, but like a body in quick sand begins to press down as messages become harder and choir voices grow faint and visions dim. It isn't like the Shadow per say, there's no creeping crawling sound of bugs or the incessant hunger, but. . .nothing. A silence, a darkness, weighty and heavy and growing heavier, their bodies and minds growing weaken.
And then the general populace feels it. A general malaise, fatigue, tiredness. Emotions grow dim, people don't feel good, or happy, or even angry without trying harder. Dreams begin to darken, and people wake up less refreshed, the vigor of life growing harder. Food tastes dull, and soon, the very colors begin to turn grey.
By now the Psykers are either panicking or falling into a stuperous coma, their bodies and minds rebelling. Perhaps even something worse. In the wake of the field, ships with poor Gellar fields and lackluster engines are forced out of warp into realspace. If they are fortunate, its a normal or emergency translation, or at least perhaps they are destroyed immediately. If not, then as in the Pariah Nexus book, it's a botched translation, bodies melding into the hull as objects try to appear in the same place at the same time. In its wake, a horde of daemons and shades rush forward. But they do not attack. They do not have time or willpower to strike the mortal world. Their one goal in mind: flee. Flee the destruction of their very essence, and the risk of annihilation without return. To be utterly destroyed by the denial of the warp, just as man might by being thrust from the safety of reality into the warp itself.