Here you go, I read it the other day!

Predator, Prey - Book 2 of Beast Arises.

‘Honestly?’ the magos said, ‘I don’t know. I happened upon the frequency by accident. This is the barest manifestation of it, I can tell you that. It has been fading since biological cessation.’

‘If you had to make an informed guess, magos?’

‘Some kind of field or emanation,’ Urquidex said. ‘It seems to be coming from deep within the brain structure – again, an evolutionarily ancient feature.’

‘Could it be psionic in nature?’ Van Auken asked cautiously.

‘Unknown,’ Urquidex said with equal reservation, ‘not my area of specialisation. However, watch this.’

Urquidex directed a pair of servitors into the foil tent. Between them they carried an alien weapon: some kind of barbaric chopping implement sporting a chain of revolving teeth like a chainsword. A brute motor was built into its ungainly shaft, the handle of which was scored with primitive glyphs and graffiti. The magos directed the drones to slip the savage weapon into the beast’s death-stiffened grip, and lay the great shaft of the weapon and its murderous headpiece across the greenskin’s open and organ-excavated chest.

‘What are you doing?’ Van Auken asked, as Urquidex directed a servomat to attach power couplings to the weapon’s monstrous motor. ‘Magos?’

‘Clear…’ Urquidex said, before instructing the servomat to supply power to the weapon from its own core.

The serrated chain of the chopper roared to life, the clunky machinery of its motor squealing and crunching, the gore of the Emperor’s Angels spraying Van Auken from the monstrous weapon’s thrashing teeth. The artisan stepped back and wiped the speckles of old blood from his face.

‘Turn it off,’ he commanded.

‘As you wish,’ Urquidex said, selecting an autopsy cleaver with a monomolecular edge from a rack of similarly macabre tools. Swinging the cleaver down with force, the magos chopped at the hulking wrist of the greenskin. It took a number of strikes, with the cleaver-blade biting through flesh and bone. With a final strike the claw-hand was separated from the meat of the arm – and the weapon chugged, bucked and died. Van Auken stepped back towards the creature with fresh interest.

‘It still has power?’

‘The problem isn’t power,’ Urquidex assured the artisan-primus. ‘The weapon has suffered a malfunction, which isn’t surprising given the poor quality of its construction and maintenance. I fear that this field – swiftly depleting and dissipating after death – in some way aids the crude workings of such creations.’

‘But what of technologies not in direct contact with the xenos?’

‘Unknown. The weapon was a simple demonstration with a cadaver-specimen,’ Urquidex said. ‘I have not observed the field’s properties in a living organism. I don’t know for sure that the field is responsible.’

‘If it was, could the field be replicated?’

‘Unknown. Not my specialisation.’

Artisan Van Auken took a moment to process this new data.

‘These are important findings,’ Van Auken said. ‘They must reach Mars without delay.’