Two 6th Ed. quirks

[thecactusman17]

That's no quirk. HERE'S a quirk mate: in night fighting, units entirely beyond 36 inches and hit by a scattering blast weapon get no cover save modifier!

I like to think of it as the models not seeing the incoming attacks and being caught unawares.

[xilton]

ahaha, I never thought of that one.

[The AKH]

Assuming Stealth stacks with itself, then if I equipped a Commissar with a Camo Cloak (granting Stealth, a USR which Ind. Characters share with their units) and added it to a unit of Veterans with Camo Cloaks, those Veterans would have Stealth twice, giving them a +2 bonus to their Cover Saves. That seems wrong.

People should definitely play Night-fighting as though NF-Stealth stacks with normal Stealth, and NF-Shrouded with normal Shrouded, but it helps to be aware of the quirk.

Camo Cloaks were changed in the FAQ to grant +1 to cover saves, not the Stealth USR.

[Tynskel]

It's not completely without precedent.

For example, more than one Tyranid unit provides a bonus to reserve rolls. And if you have them both in your army, they stack.

That's two different special rules.
Note that if you have multiple of the same unit, they do not stack. It is when you have two different rules they do stack.

Shrouded is one special rule. You cannot get shrouded twice. The reason Stealth and Shrouded stack is because they are 2 different rules. The camo cloak is just a flat +1, so that stacks as well. So, if you are out in the open, with shrouded, stealth, and a camo cloack, you have a 3+ cover save. When you add night fight... you have a 3+ cover save, because you don't get shrouded and stealth again.

[Aramel]

That's no quirk. HERE'S a quirk mate: in night fighting, units entirely beyond 36 inches and hit by a scattering blast weapon get no cover save modifier!

I like to think of it as the models not seeing the incoming attacks and being caught unawares.

No, the rule specifically says that units beyond 36 can be hit by a scatter, however, they receive the same benefit from the night fighting rules as the original target. In most cases this will be shrouded. As to stacking, NF either gives you the "shraouded" or "stealth" special tules, which can stack with each other. Obviously you can only have a particular special rule once. This means that stealth gives no further benefit between 12 and 24 during NF.

Logically if, like Eldar Pathfinders, it simply says "+2 to cover save" then it will stack with the special rule.