TEXT: 1
  IMPERIAL ARMOUR – INDEX: FORCES OF CHAOS
  WARHAMMER 40,000 – IMPERIAL ARMOUR
  INDEX: FORCES OF CHAOS
  Official Update Version 1.1
  Although we strive to ensure that our rules are perfect, 
  sometimes mistakes do creep in, or the intent of a rule 
  isn’t as clear as it might be. These documents collect 
  amendments to the rules and present our responses to 
  players’ frequently asked questions. As they’re updated 
  regularly, each has a version number; when changes 
  are made, the version number will be updated, and any 
  changes from the previous version will be highlighted 
  in magenta. Where a version number has a letter, 
  e.g. 1.1a, this means it has had a local update, only in 
  that language, to clarify a translation issue or other 
  minor correction.
  ERRATA
  Page 8 – Chaos Decimator, Keywords
  Delete ‘Titanic’ from this datasheet’s Keywords line.
  Page 10 – Greater Brass Scorpion of Khorne, Runes of 
  the Blood God
  Delete the words ‘(friendly or enemy)’ from this ability.
  Add the following to this ability: ‘Furthermore, this 
  model cannot be targeted by psychic powers manifested 
  by friendly Psykers.’ 
  Page 12 – Hellforged Contemptor Dreadnought, 
  Containment Breach
  Change the third sentence to read:
  ‘Each unit within 6" suffer D3 mortal wounds unless 
  it is a Psyker, in which case it suffers D6 mortal 
  wounds instead.’
  Pages 12, 20 and 22 – Hellforged Contemptor 
  Dreadnought, Hellforged Deredeo Dreadnought and 
  Hellforged Leviathan Dreadnought
  Add ‘Helbrute’ to the Keywords line of all 
  these datasheets.
  Page 12 – Hellforged Contemptor Dreadnought, 
  Wargear Options
  Change the second wargear option to read:
  ‘•  A Hellforged Contemptor may replace one deathclaw 
  and one combi-bolter for one of the following 
  weapons (or it can replace both deathclaws and both 
  combi-bolters for two of the following weapons):’
  Add the following wargear option:
  ‘• This model may take a havoc launcher.’
  Pages 12-29 – Machina Malefica
  Change this ability in all instances to read:
  ‘At the end of each Fight phase, roll a number of D6 
  for this model equal to the number of models that were 
  slain by it during this phase; for each dice that scores 
  a 5+, this model regains one lost wound. This model 
  cannot regain lost wounds by any other means.’
  Pages 13 and 14 – Hellforged Land Raider Proteus and 
  Hellforged Land Raider Achilles, Containment Breach
  Change the third sentence of this ability to read:
  ‘Each unit within 6" suffers D6 mortal wounds unless it 
  is a Psyker, in which case it suffers 2D3 mortal wounds.’
  Page 20 – Hellforged Deredeo Dreadnought, 
  Wargear Options
  Change the second wargear option to read:
  ‘•  A Hellforged Deredeo Dreadnought may be equipped 
  with one of the following:
   
  - Greater havoc launcher
   
  - Hellfire veil’
  Page 20 – Hellforged Deredeo Dreadnought, 
  Hellfire Veil
  Change the first sentence of this ability to read:
  ‘If equipped with a Hellfire veil, all friendly units with 
  the Chaos and <Legion> keywords that are wholly 
  within 6" of the Hellforged Deredeo Dreadnought gain 
  a 5+ invulnerable save.’
  Page 21 – Hellforged Rapier Battery, Chaos Space 
  Marine Crew
  Change this ability to read:
  ‘When a Hellforged Rapier Battery is set up on the 
  battlefield, all models are set up in unit coherency. 
  From that point onwards, all the Hellforged Rapiers 
  are treated as one unit and all the Chaos Space Marine 
  Crew are treated as another. Chaos Space Marine Crew 
  may only be chosen as a target in the Shooting phase if 
  they are the closest visible unit to the firer.’
  Page 22 – Hellforged Leviathan Dreadnought, 
  Wargear Options
  Change the second wargear option to read:
  ‘•  A Hellforged Leviathan may replace one siege claw 
  and one meltagun for one of the following weapons 
  (or it can replace both siege claws and both meltaguns 
  for two of the following):’
  
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  IMPERIAL ARMOUR – INDEX: FORCES OF CHAOS
  Pages 22 and 81 – Hellforged siege claw
  Add the following ability to this weapon:
  ‘Re-roll failed wound rolls against Infantry.’
  Page 23 – Hellforged Dreadclaw Drop Pod, Transport
  Change this datasheet’s Transport entry to read:
  ‘This model can transport 10 <Legion> or <Mark 
  of Chaos> Infantry models. Each Jump Pack 
  or Terminator model takes up the space of two 
  other models. This model can instead transport a 
  single Hellforged Contemptor Dreadnought, 
  Chaos Decimator or Helbrute, and no other 
  models. It cannot transport a Hellforged 
  Leviathan Dreadnought or a Hellforged 
  Deredeo Dreadnought.’
  Page 27 – Hellforged Fellblade, Wargear Options
  Change the first wargear option to read:
  ‘•  A Hellforged Fellblade may replace its two quad 
  lascannon with two laser destroyers.’
  Page 28 – Hellforged Falchion, Wargear Options
  Change the first wargear option to read:
  ‘•  A Hellforged Falchion may replace its two quad 
  lascannon with two laser destroyers.’
  Pages 33 and 34 – Chaos Storm Eagle Assault Gunship 
  and Chaos Fire Raptor Assault Gunship, Damage Tables
  Change the third value under ‘BS’ to read ‘5+’
  Page 39 – Zhufor the Impaler, Faction Keywords
  Change this datasheet’s Faction Keywords line to read:
  ‘Chaos, Heretic Astartes, Khorne, World 
  Eaters, Skulltakers’
  Page 41 – Lord Arkos, Faction Keywords
  Change this datasheet’s Faction Keywords line to read:
  ‘Chaos, Heretic Astartes, Alpha Legion, 
  The Faithless’
  Page 50 – Mamon Transfigured, Faction Keywords
  Change this datasheet’s Faction Keywords line to read:
  ‘Chaos, Heretic Astartes, Daemon, Death Guard, 
  The Tainted’
  Pages 45-56 – Faction Keywords
  Add ‘Daemon’ to all these units’ Faction Keywords line 
  (and delete it from their Keyword line).
  Page 54 – Spined Chaos Beast, Daemonic Allegiance
  Change this ability to read: 
  ‘When this model is chosen as part of an army, the 
  controlling player must select one of the following 
  keywords, replacing its <Allegiance> keyword: 
  Khorne, Tzeentch, Nurgle or Slaanesh. This model 
  will gain one additional ability based on the chosen 
  keyword; if Khorne is chosen, it gains Unstoppable 
  Ferocity; if Tzeentch is chosen, it gains Ephemeral 
  Form; if Nurgle is chosen, it gains Disgustingly 
  Resilient; and if Slaanesh is chosen, it gains 
  Quicksilver Swiftness.’
  Pages 54 and 85, Warp Spines
  Change this weapon’s ability to read:
  ‘Normal attacks cannot be made with this weapon. 
  Instead, roll a D6 each time a Spined Chaos Beast ends a 
  charge move within 1" of an enemy unit, or an enemy unit 
  ends a pile-in move within 1" of the Spined Chaos Beast. 
  On a 2+ that enemy unit suffers a single automatic hit.’
  Page 55 – Giant Chaos Spawn
  Add <Allegiance> to this unit’s Faction Keywords line.
  Add the following ability:
  ‘Daemonic Allegiance: When this model is chosen as 
  part of an army, the controlling player must select one 
  of the following keywords, replacing its <Allegiance> 
  keyword: Khorne, Tzeentch, Nurgle or Slaanesh. 
  This model will gain one additional ability based on 
  the chosen keyword; if Khorne is chosen, it gains 
  Unstoppable Ferocity; if Tzeentch is chosen, it 
  gains Ephemeral Form; if Nurgle is chosen, it gains 
  Disgustingly Resilient; and if Slaanesh is chosen, it 
  gains Quicksilver Swiftness.’
  Add the following abilities from the Spined Chaos 
  Beast datasheet to this datasheet: Unstoppable 
  Ferocity, Ephemeral Form, Disgustingly Resilient and 
  Quicksilver Swiftness.
  Page 63 – Renegade Knight Porphyrion, Abilities
  Delete the ‘Explodes’ ability from this datasheet.
  Page 72 – Daemon Bound Points Values, 
  Soulburner petard
  Change the points value of this weapon to read ‘60’.
  FAQs
  Q: Are there any restrictions on which Legion I can choose when 
  replacing the <Legion> Faction Keyword on datasheets within 
  this book?
  A: Yes, as follows: 
  You can only choose for a unit to be from the World 
  Eaters Legion if it has the Khorne keyword, or if it 
  has the <Mark of Chaos> keyword and you choose to 
  replace that with Khorne.
  You can only choose for a unit to be from the Thousand 
  Sons Legion if it has the Tzeentch keyword, or if it 
  has the <Mark of Chaos> keyword and you choose 
  to replace that with Tzeentch. You cannot choose for 
  a Hellforged Rapier Battery, a Chaos Hellwright or 
  a Chaos Hellwright on Dark Abeyant to be from the 
  Thousand Sons.
  You can only choose for a unit to be from the Death 
  Guard Legion if it has the Nurgle keyword, or if it 
  has the <Mark of Chaos> keyword and you choose 
  to replace that with Nurgle. You cannot choose for 
  a Hellforged Rapier Battery, a Chaos Hellwright or 
  a Chaos Hellwright on Dark Abeyant to be from the 
  Death Guard.
  
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  IMPERIAL ARMOUR – INDEX: FORCES OF CHAOS
  You can only choose for a unit to be from the Emperor’s 
  Children Legion if it has the Slaanesh keyword, or if 
  it has the <Mark of Chaos> keyword and you choose to 
  replace that with Slaanesh.
  Otherwise, any of the units in this book can be from 
  any Legion.
  Q: There is no datasheet for a Ferrum Infernus Chaos 
  Dreadnought – is there a datasheet I should use for this model?
  A: Use the Helbrute datasheet on page 33 of 
  Index: Chaos.
  Q: There is no datasheet for an Emperor’s Children Sonic 
  Dreadnought – is there a datasheet I should use for this model?
   A: Use the Helbrute datasheet on page 33 of Index: 
  Chaos. It must replace its <Mark of Chaos> keyword 
  with Slaanesh, it must replace its <Legion> keyword 
  with Emperor’s Children, and it has two additional 
  wargear options; it may take a doom siren, and it may 
  replace its multi-melta with two blastmasters.
  Q: There is no datasheet for a Chaos Vindicator Laser Destroyer 
  – is there a datasheet I should use for this model?
   A: Use the Deimos Pattern Vindicator Laser Destroyer 
  datasheet on page 8 of Imperial Armour Index: Forces of 
  the Adeptus Astartes. It gains the Hellforged keyword 
  and must replace all of its Faction keywords with the 
  following: Chaos, Heretic Astartes, <Mark of 
  Chaos>, <Legion>.
  In addition, it gains the following ability:
  ‘Machina Malefica: At the end of each Fight phase, roll 
  a number of D6 for this model equal to the number 
  of models that were slain by it during this phase; for 
  each dice that scores a 5+, this model regains one lost 
  wound. This model cannot regain lost wounds by any 
  other means.’
  Q: Is the plasma destroyer supposed to have an ability that can 
  inflict mortal wounds upon the firer if a hit roll of 1 is made 
  for it?
  A: No.
  Q: Is the Chaos Hellblade suppose to have the Daemonic 
  Machine Spirit ability?
  A: No.
  
SOURCE: textdata/thevault/Warhammer/40k/1st-8th Editions (Prior)/8th Edition (2017)/5) FAQs/2017 FAQs/40K_8th_ed_Update_Imperial_Armour_Index_Forces_of_Chaos_ver_1.1.pdf