TEXT: SHRIKE’S TALONS
  POINTS: 125 + MODELS
  Kayvaan Shrike of the Raven Guard is nothing less than a legend. For
  years untold, Shrike has led his company on an unremitting war
  against the forces of Waaagh! Skullkrak, winning impossible victory
  after impossible victory. To the common man, Shrike and his followers
  are heroes, saviours unlooked for in the very darkest of times. To the
  Orks of Targus – including the otherwise unflappable Warboss
  Skullkrak – Shrike’s Talons are wrathful spectres, hated and feared in
  equal measure.
  The direr the need, the likelier it is that Shrike will intercede, arriving in
  the nick of time to seize victory. First, the enemy suffers a series of
  inexplicable accidents – sentries vanish, patrols disappear and supply
  depots are razed to the ground. Second, powerful static blankets the
  enemy’s transmission, throwing them into confusion. Then and only
  then, jump pack and Drop Pod thrusters screaming like avenging
  angels, do Shrike’s Talons descend from the skies – the last sight their
  enemies will ever see.
  FORMATION:
  Kayvaan Shrike
  0-1 Space Marine Chaplain
  0-1 Space Marine Librarian
  1-3 Space Marine Assault Squads
  1-3 Tactical Squads
  0-3 Vanguard Veteran Squads
  Units without jump packs must select a Drop Pod as a dedicated transport.
  SPECIAL RULES:
  Strike Force: Each unit in Shrike’s Talons must be deployed within 6"
  of another unit in the formation. If coming on from reserve, they must
  enter the table within 6" of the point entered by another unit from
  Shrike’s Talons. If deep striking, they must aim to arrive within 6” of
  another unit from Shrike’s Talons.
  Hunters in the Darkness: Shrike’s Talons grant your side the Ambush,
  Jammers and Surgical Raids Strategic Assets.
  If Nobody Else Can Help: Shrike is famous for intervening in a battle
  when all hope seems lost. If, at the end of any friendly Movement phase,
  the other side controls more than half the objectives (i.e. would capture
  them if the game were to end at that point) then Shrike’s Talons make an
  out-of-sequence deployment and immediately Deep Strike onto the board.
  The first unit must arrive within 6" of whichever of the aforementioned
  objectives has the most enemy units within 6".
  If this special rule has not been triggered when you are deciding which
  strategic reserves to commit to the game, Shrike’s Talons may enter as
  normal strategic reserves at your discretion.
  KAYVAAN
  SHRIKE
  ASSAULT SQUAD
  TACTICAL SQUAD
  DROP POD
  
SOURCE: textdata/thevault/Warhammer/40k/1st-8th Editions (Prior)/5th Edition (2008)/Apocalypse Datasheets/40k 5e - Space Marines - ShrikesTalons.pdf