Space energies.
There's no denying it, they're real. They affect all kinds of wildlife, animals, humans, sub-humans, wandering monsters, Murphys, Hobgoblins, Troglodytes, to name a few.
Stealing a line from a song that I often play:
Raw power is sure to come runnin' to you.
Soon, maybe - I'll let the energies use me as a conduit. More explosive than a silver moon-shot? The psyker visions increase, as the care-factor decreases.
(In other words, how the fuck can I buy a ticket off-world? LV-426 seems like a happy play-ground in comparison to Earth)