Blood Reaver — Aaron Dembski-Bowden

A UNION OF CHAOS
Driven on by their hatred of the False Emperor, the Night Lords stalk the shadows of the galaxy, eternally seeking revenge for the death of their primarch. Their dark quest leads them to a fractious alliance with the Red Corsairs, united only by a common enemy. Together with this piratical band of renegades, they bring their ways of destruction to the fortress-monastery of the Marines Errant. Their mission: to steal the loyalist Chapter's gene-seed, dooming them to a slow demise.
THEY SEEK ONLY TO BRING DEATH