Priests of Mars wrote:The flanks of the Speranza shuddered as a weapon system built into its superstructure ground upwards on heavy duty rails. A vast gun tube rose from the angled planes of the Ark Mechanicus like the great menhir of some tribal place of worship being lifted into place. Power readouts, the likes of which had rarely been seen in the Imperium since before the wars of Unity, bloomed within the weapon and a pair of circling tori described twisting arcs around the tapered end of the unveiled barrel.

Elements of the technology that had gone into their construction would have been familiar to some of the more esoteric branches of black hole research and relativistic temporal arcana, but their assembled complexity would have baffled even the Fabricator General on Mars. Pulsing streams of purple-hued anti-matter and graviton pumps combined in unknowable ways in the heart of a reactor that drew its power from the dark matter that lurked in the spaces between the stars. It was a gun designed to crack open the stately leviathans of ancient void war, a starship killer that delivered the ultimate coup de grace.

Without any command authority from the bridge of the Speranza, the weapon unleashed a silent pulse that covered the distance to the Starblade at the speed of light.

But even that wasn’t fast enough to catch a ship as nimble as one built by the bonesingers of Biel-Tan and guided by the prescient sight of a farseer. The pulse of dark energy coalesced a hundred kilometres off the vessel’s stern and a miniature black hole exploded into life, dragging in everything within its reach with howling force. Stellar matter, light and gravity were crushed as they were drawn in and destroyed, and even the Starblade’s speed and manoeuvrability weren’t enough to save it completely as the secondary effect of the weapon’s deadly energies brushed over its solar sail. Chrono-weaponry shifted its target a nanosecond into the past, by which time the subatomic reactions within every molecule had shifted microscopically and forced identical neutrons into the same quantum space.

Such a state of being was untenable on a fundamental level, and the resultant release of energy was catastrophic for the vast majority of objects hit by such a weapon. Though on the periphery of the streaming waves of chronometric energy, the Starblade’s solar mast detonated as though its internal structure had been threaded with explosive charges. The sail tore free of the ship, ghost images of its previous existence flickering as the psycho-conductive wraithbone screamed in its death throes. Blue flame geysered from the topside of the eldar vessel and the craft lurched away from the force of the blast.

Its previously distorted and fragmentary outline became solid, and the circling captains of the Kotov Fleet wasted no time in loosing salvo after salvo of torpedoes at the newly revealed warship.