TEXT: Over fifty years before the Tyranid assault, High Admiral
  Yriel had led Iyanden fleet. Although he was considered
  one of the greatest Eldar naval tacticians to have ever
  lived, his character was flawed by the sin of pride. When
  Iyanden had been threatened by a Chaos space fleet
  raiding out of the Eye of Terror, Yriel had led the fleet on
  a pre-emptive attack on the Chaos Fleet's flagship, leaving
  Iyanden Craftworld unprotected. He only returned just in
  time to stop a suicide attack by a small flotilla of Chaos
  raider ships, who nonetheless managed to damage the
  Craftworld. Expecting to be feted and honoured for his
  victory, Yriel was deeply angered when he was called upon
  to defend his course of action. Claiming that his record
  should speak for itself, Yriel refused to enter into the
  debate, leaving his old friend Kelmon no choice but to
  elect a new High Admiral in his place. Bitter with rage,
  Yriel vowed that he would never set foot on Iyanden
  again. He and a small band of followers left the Craftworld
  and formed an Eldar raider company that became the
  single most powerful Eldar pirate force operating in the
  galaxy.
  When he heard of the Tyranid's assault on Iyanden, Yriel
  did his best to ignore the terrible peril that threatened his
  old Craftworld. But proud though he was, righteously
  angry though he was, Yriel could not leave lyanden to its
  fate in this, its very darkest hour. Battling his way through
  the Tyranids' psychic blockade, Yriel swept to the aid of his
  people. He arrived just in time.
  Like a thunderbolt from the blue Yriel and his raider fleet
  smashed into the Tyranid Hive Swarms. He was quickly
  joined by the few remaining craft of lyanden's fleet, and
  together the combined Eldar space fleets tore the Tyranid
  Swarms apart. Two more waves of Tyranid Hive Swarms
  attacked the Craftworld, only to meet the same fate. Not a
  single Tyranid ship reached the Craftworld, though the
  cost to the Raiders was dear. Bloodied but unbowed the
  Raiders prepared to sell their lives to the last in order to
  turn back the next wave of Tyranids. On the bridges of the
  Craftworld and of the circling Eldar ships vigilant eyes
  watched the scanners, waiting for the first tell-tale blip
  that would indicate the direction of the next assault.
  Minutes passed, then hours, and with a growing sense of
  wonder the Eldar realised that no more Tyranid Swarms
  were coming - the assault was over. The Hive Fleet had
  been destroyed!
  But on Iyanden Craftworld the war went on. The Tyranid
  Hordes that had been fighting a tenacious rearguard
  action awaiting the aid of the rest of the Hive Fleet now
  turned like cornered rats and hurled themselves at the
  Eldar. Caught by surprise the Eldar staggered back,
  desperately trying to hold the suicidal Tyramd onslaught.
  The Fortress of the Red Moon fell to a surprise attack. and
  for a moment it seemed that with victory within their
  grasp the Eldar would be defeated. But, for the second
  time, Yriel led his Raiders to the rescue of the Craftworld.
  Disembarking from their orbiting spacecraft the Raiders
  joined with the battered defenders of Iyanden Craftworld
  and, yard by yard. step by step, forced the Tyranids back.
  A final wild charge led by the Tyranid Hive Tyrant was
  annihilated by the combined efforts of the Avatar, Yriel
  and the Ghost Warriors. and then in a series of vicious
  one-sided battles the last of the Tyranids were hunted
  down and destroyed. The Tyranid attack on Iyanden
  Craftworld was over. The Tyranids had been defeated.
  14
  Although Eldar Corsairs are a constant threat to merchant shipping, they very rarely pose a major
  threat to Imperial battlefleets. The same cannot be said of the dozens of fleets of Eldar ships that
  protect each Eldar Craftworld. Each of these Craftworld warfleets is a deadly and highly potent force
  that is capable of laying waste to an entire sub-sector.
  by Matt Keefe
  YRIEL’S RAIDERS
  
  15
  
  TYPE/HITS
  SPEED
  TURNS
  SHIELDS
  ARMOUR
  TURRETS
  Cruiser/8
  10/20/25cm
  special
  Holo-fields
  5+
  0
  ARMAMENT
  RANGE/SPEED
  FIREPOWER/STR
  FIRE ARC
  Prow Weapons Battery
  30cm
  16
  Front
  Keel Launch Bay
  Speed Nightwing Fighters 30cm*
  4
  -
  Phoenix Bombers 20cm*
  4
  Port Pulsar Lance
  30cm
  1
  Front
  Starboard Pulsar lance
  30cm
  1
  Front
  16
  A
  t the heart of Iyanden lies the Shrine of Asuryan.
  It is here that the most powerful and wise of
  Iyanden’s leaders gather for all talk of war and it is
  here that the armies of Iyanden muster when the
  time comes. There is no place more sacred, nor
  more heavily guarded within the entire Craftworld.
  At the centre of this great shrine burns a constant
  flickering fire, the Flame of Asuryan itself – a beacon,
  a symbol of hope to the Eldar of the Craftworld. It is
  said that the Flame of Asuryan is the burning fire
  with which the Eldar will claim victory over all who
  would attack the Craftworld, though it is also said
  that should the flamed ever go out, Iyanden’s light
  will diminish also. When Yriel led the Craftworld’s
  fleet, he was considered to be the favoured of
  Asuryan, and amongst his many great titles earned
  himself the honorific of ‘Bearer of the Flame’, and
  duly renamed his flagship The Flame of Asuryan
  accordingly. 
  The Flame of Asuryan is magnificent, even by the
  standard of Dragonships. It bears three great sails –
  one born upon its long elegant spine, and another
  pair each mounted atop the great outriggers to its
  flanks, both of which also bear deadly pulsar lances. 
  The Flame of Asuryan bore Yriel to many great
  victories at the head of the Iyanden fleet and he
  would give little thought to parting with the vessel
  once his own rank was lost and his own place
  amongst the Craftworld taken from him. Instead, he
  and his most loyal followers departed, Yriel himself
  still aboard his mighty flagship. By such means did
  the Flame of Asuryan come to depart the Craftworld
  of Iyanden.
  When Hivefleet Kraken descended upon Iyanden,
  Yriel made no attempt to aid his former home, but
  when the Tyranids overran Iyanden and threatened
  the Shrine of Asuryan itself, he could no longer
  ignore its calling. Returning at the head of a mighty
  fleet of raiders who he had gathered about him in his
  years of exile, Yriel smashed aside the Tyranid fleet.
  FLAME OF ASURYAN, YRIEL’S FLAGSHIP  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 320 points
  *Nightwings function exactly as Darkstars, Phoenix bombers function exactly as Eclipse.
  Notes: The Flame of Asuryan carries the most fearsome members of Yriel’s own pirate warband, which count as an Aspect
  Warrior Fighting Crew. 
  
  17
  The Eldar are an incredibly ancient race, who once ruled
  a vast empire across the stars. Then came the hideous
  times of the fall, when the Eldar were consumed by their
  own decadence and fell from power. The few who
  survived were scattered across the stars in their vast
  Craftworlds - vessels as large as worlds which now stand
  as the Eldar race’s last remaining havens.
  It is impossible to say with certainty how many
  Craftworlds there are. They were built many millennia
  ago in great urgency and in times of unimaginable peril.
  The turmoil and confusion which preceded the
  destruction of the Eldar worlds was great. All higher
  government had long since ceased to operate, and it was
  only thanks to the heroic actions of a few far-sighted
  individuals that the Craftworlds were built at all.
  The Eldar Path
  Aware that it was the ineffable power of their own whims
  and desires which had so wantonly brought about their
  downfall, the survivors, the Eldar of the Craftworlds,
  have developed a way to control their own inner natures.
  Every Eldar chooses for himself a discipline which he
  then makes it his task to master. It may take years to
  successfully accomplish this, perhaps more than a single
  human lifetime. Each discipline is rightly called a path,
  and each path may necessitate further choices and
  specialisations. For example, the Path of the Warrior has
  many Aspects, and whilst all enable the Eldar to master
  the skills of combat, each Warrior Aspect brings with it its
  own special techniques and abilities. Other paths include
  that of the Bonesinger, as the psycho-technicians of the
  Craftworlds are called, who craft wraithbone and other
  psycho-plastic materials to fashion the material artifacts
  of the Eldar. There are innumerable paths, some chosen
  but rarely, each offering its followers a complete way of
  life.
  Outcasts & the Path
  Sometimes the rigid constraints of the Eldar path are
  intolerable even for an Eldar to bear; such individuals
  leave their Craftworlds and become known as Outcasts.
  Many Eldar spend years or decades as Outcasts before
  they return to the Eldar path. Outcasts must bear the
  terrible burden of their heightened Eldar consciousness
  without the protection of the Eldar path. Set free within
  the universe they are dangerously vulnerable. Only Eldar
  of especially strong character can survive for long as
  Outcasts. After years of adventure and wandering, or
  sailing the seas of space aboard the pirate fleets, most
  Eldar eventually return to the sanctuary of the Eldar path.
  Eldar Pirates are outcasts – Eldar who have turned away
  from the Path and abandoned their craftworld. These
  Eldritch Raiders live quite apart from the orderly,
  disciplined Eldar of the Craftworlds forming ravenous
  bands of pirates, corsairs and raiders. As with other
  outcasts, some of these eventually return to the Path, or
  may retain some ties to their original craftworld.
  However, the wilful and unaccountable actions of the
  Outcasts stand far apart from the carefully scryed and
  considered actions of the Craftworld Eldar, and for the
  most part the Farseers show great reluctance for their
  own peoples to mix with the wayward and dangerous
  Outcasts. 
  Combining Eldar Craftworld and Corsair Vessels
  Outright alliance between fleets acting on the will of a
  Craftworld’s Seers and the more volatile, self-serving
  Eldar Corsairs is relatively rare, but certainly not
  unknown. It does, however, usually only occur when a
  knowledgeable leader of great influence is present, able
  to both satisfy the careful measured desires of the Seers
  yet at the same time prove his might to the more
  aggressive pirates. Such leaders, like the legendary Yriel,
  are rare, but the fleets they command are invariably
  powerful.
  Ordinarily, Craftworld Eldar fleets CANNOT use the
  Reserves rules to pick ships from a Corsair fleet (nor vice
  versa). To use a mixed Craftworld and Corsair fleet, you
  must first choose to use ONE particular Eldar fleet list. In
  place of that fleet’s normal Fleet Commander option,
  you must then choose an Eldar Hero (listed below). The
  presence of an Eldar Hero then entitles your fleet to take
  ships from the ‘other’ Eldar list (i.e. reserve Corsair ships
  if your fleet is a Craftworld Eldar fleet, reserve Craftworld
  Eldar ships if your fleet is made up of Corsairs). 
  FLEET COMMANDER
  Eldar Hero
  Your fleet may be led by an Eldar Hero, in place of its
  normal fleet commander.
  Eldar Hero (Ld 10)  . . . . . . . . . . . . . . . . . . . . . 150 pts
  You may purchase re-rolls for your Eldar Hero by paying
  the cost listed below:
  One re-roll  . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50 pts
  Two re-rolls  . . . . . . . . . . . . . . . . . . . . . . . . . . . . .75pts
  Three re-rolls  . . . . . . . . . . . . . . . . . . . . . . . . . .100 pts
  THE CRAFTWORLD’S & THE OUTCASTS
  
SOURCE: textdata/thevault/Warhammer/40k/Battlefleet Gothic/Supplementals/BFG_Yriels_Raiders.pdf