Eldar Corsairs

For those Eldar who dwell within the Craftworlds, the heightened pitch at which Eldar experience life is tightly controlled by adhering to a Path which creates bounds and limits on an individual Eldar’s experience. Occasionally an Eldar turns his back on the path and embraces an existence without restrictions; these Eldar are called Outcasts. This decision is a perilous one, as it not only leaves the Outcasts more vulnerable to the thirsting nemesis that has pursued the Eldar since the Fall, but also opens them to the risk of becoming consumed by their experiences and so lose themselves to darkness. The Eldar Corsairs that prey on other races in the void are Outcasts from the Eldar Path and are highly dangerous and unpredictable, equally likely to act with magnanimity or wanton slaughter. 
==The Predations of the Eldar within the Koronus Expanse==
There are several Eldar Corsair fleets active within the Koronus Expanse, ranging in size from single vessels to large and dangerous fleet . The exact number of separate fleets remains unclear, and distinguishing between different groups of Eldar or the finer points of alliance and fealty among Eldar is beyond most humans. Some hunt weak and under-protected vessels like predators drawn to feeble and sickly animals, using the exceptional maneuverability to take or destroy craft that stray into their hunting grounds. Rarely do the Corsair ships attack the strongholds of other races openly, choosing rather the approach of the silent predator, unseen by its prey until it pounces. Of Corsair bands that lurk in the Koronus Expanse, two whose names are known with fear and dread are the Children of Thorns and the Crow Spirits.