(FW) Lias Issodon

If an army includes Lias Issodon its controlling player may select a single enemy unit, Monstrous Creature or vehicle that has been deployed onto the table. After any Scout redeployments have been made, but before the game begins, the chosen unit suffers D6+3 wounds with no AP value if a squad or Monstrous Creature, distributed as shooting hits (assume the attack has originated from the closest unit in Issodon's force). If the target is a vehicle, it suffers D3 rolls on the Haywire table instead (see page 37 of the Warhammer 40,000 rulebook). Models with the Independent Character special rule which are not part of a squad may not be targeted by this attack.

Whilst Lias Issodon is alive, the army may re-roll any Reserve rolls made (failed or successful). In addition, the opposing army has a -1 modifier to all Reserves rolls.

When choosing an army, all models in the same Detachment or Formation must be drawn from the same Chapter.  If a unit's datasheet contains a Chapter in brackets after the Chapter Tactics special rule - for example, "Chapter Tactics (Ultramarines)" - the unit must always be drawn from this Chapter, and therefore cannot be included in a Detachment or Formation with any units that are drawn from other Chapters. All models drawn from a given Chapter benefit from that Chapter's Special Rule. If a unit contains models drawn from two different Chapters, it counts as from neither Chapter, and thus benefits from neither Chapter Tactic.

A unit that contains at least one model with this special rule automatically passes Fear and Regroup tests. When it Regroups, the unit does not make the 3" Regroup move, but can instead move, shoot (or Run) and declare charges normally in that turn. Furthermore, if a unit containing one or more models with this special rule is caught by a Sweeping Advance, they are not destroyed, but remain locked in combat instead.

A unit that contains at least one model with this special rule counts its cover save as being 2 points better than normal. Note that this means a model with the Shrouded special rule always has a cover save of at least 5+, even if it's in the open.

Cover save bonuses from the Shrouded and Stealth special rules are cumulative (to a maximum of a 2+ cover save).

Independent characters can join other units.  They cannot, however, join units that contain vehicles or Monstrous Creatures.  They can join other Independent Characters, though, to form a powerful multi-character unit!  Independent Characters pass Look Out, Sir rolls on a 2+. A unit that contains one or more Independent Characters does not need a double 1 to Regroup if reduced to below 25% of its starting numbres, but instead tests as if it had at least 25% remaining.

Full details in BRB. Rule too long to copy verbatim.