I have returned from the Warp!

I, Lord Admiral Spire, Saviour of the Gothic sector and Vanquisher of Warmaster Abaddon's 12th Black Crusade, have returned from the warp after being trapped for over eight-hundred years!

You have an appointment with Abaddon the Despoiler, Admiral. It is 800 years overdue, and can't wait much longer.

Be careful, though. The Inquisition believes that the Planetkiller, as well as a Gloriana-class superbattleship "Vengeful Spirit", carrying the arch-traitor himself, are lurking out there. So, you better prepare your fleet well, before you engage them.

Glory to the Emperor!

Indeed. From what I remember, the Vengeful Spirit was the flagship of the traitor Primarch Horus Lupercal during the dark days of the Horus Heresy.