Children of Thorns

When voidfarers in the Expanse speak of the fickle and
vicious ways of Eldar Corsairs, their tales most often
speak of the Corsairs known as the Children of Thorns. Clad in glossy beetle-black armor, the
proud and capricious warriors of the Children
of Thorns are merciless in combat and are
said to slaughter their enemies to the last once battle is joined.
It is said that one is fortunate to hear the keening war cries
of the Children of Thorns and live to tell of it. The leader of
the Children of Thorns is a female who long ago cast herself
from the strictures of the Eldar Path to lead her Children of
Thorns in bloodshed across the Halo Stars. Her true names
long ago discarded, she is now simply known as the Mother of the Shadows. When attacking in the void, the night-black
ships of the Children of Thorns prize stealth above all tactics.
Only once they have ensured complete surprise and a perfect
position of attack, they strike with ferocity and precision,
crippling their prey and leaving the ship reeling and boarded
by screaming, dark, and graceful shapes that kill and kill until
there is nothing left alive and the prize is theirs.
Despite their terrifying reputation, the Children of Thorns
have had dealings with a number of Rogue Traders in the
Expanse and have even made compacts with a few or fought
as mercenaries for a those brave enough to seal such a bargain.
It is perhaps these ties that give the Children of Thorns the
phenomenally accurate information that allows them to strike
at human craft close to the Maw with such accuracy. One or
more Rogue Traders have sealed a compact with the Children
of Thorns---one paid for in the blood of their rivals.