Swordstorm

Swordstorm was a Gloriana-class Battleship that served as the flagship of the Primarch Jaghatai Khan and his White Scars Space Marine Legion during the Great Crusade and the Horus Heresy eras of the late 30th and early 31st Millennia.

History
The Swordstorm was the fastest of the Gloriana-class Battleships built by the Mechanicum for the Emperor's Great Crusade. Its Plasma Reactor and drives had been heavily modified by the White Scars' Techmarines to allow for much more rapid acceleration in realspace than the starships of the base class.

During the Chondax Campaign in 007.M31 early in the Horus Heresy, the Swordstorm led the White Scars' breakout from the Chondax System after the V Legion was unexpectedly attacked by elements of the Alpha Legion's fleet. In his determination to discover exactly who had betrayed the Emperor to initiate the Horus Heresy, the White Scars fleet first arrived at Prospero, the former homeworld of the Thousand Sons Legion that had recently been assaulted by an Imperial Censure Host led by Leman Russ of the Space Wolves Legion.

There the Swordstorm and its fleet briefly engaged the fleet of the Death Guard Legion under the command of the Primarch Mortarion during the Second Battle of Prospero. This naval battle unfolded after the failure of a coup to take control of the White Scars by Hasik Noyan-Khan in an attempt to force the Legion to side with Horus while Jaghatai was down on the surface of Prospero.

The Swordstorm was ultimately destroyed during the Battle of Catallus in 011.M31 where it was used as a trap in an attempt to kill Mortarion. After the Death Lord boarded the Battleship in search of his brother Jaghatai, who had already evacuated to the Battleship Lance of Heaven, the great vessel's Void Shields were reactivated by a force of suicidal Sagyar Mazan, White Scars Astartes who sought atonement for their participation in the coup led by Hasik Noyan-Khan against Jaghatai at Prospero. Mortarion was unable to get off the Swordstorm while the Void Shields remained active, at the same time that the ship's Plasma Reactor had been set to overload and self-destruct.

Mortarion was forced to fight his way through the ambush by the Sagyar Mazan while ordering his Death Guard fleet to open fire on the Swordstorm and take down its Void Shields the hard way. The Death Guard fleet succeeded at this task with only moments to spare before the Swordstorm was consumed in a massive explosion, allowing Mortarion to teleport off the doomed vessel to safety.

In the wake of the Battle of Catallus, the Lance of Heaven became the new flagship of Jaghatai Khan and the White Scars Legion.