Death Interactions.

[Kobolds]

So say we have the Death allegiance for the 6+(Possibly5+) Wound/Mortal Wound protection, on a unit of Morghast Archai who also have a 5+ wound/mortal wound protection, I assume they do get both saving rolls plus armour roll? Following that if theyre within range of the Wight King with standard and they die after the rolls, I assume they can follow up with the standards ability to roll a 6 to negate the killing blow? As written the rules seem to work like this, but it almost seems like too many save rolls to be true.

[Nico]

The Archai's armour only provides a ward save against mortal wounds.

However against mortal wounds you would indeed get multiple ward saves  if you're close enough to a hero.

[WillofNagash]

Yes you would get:

Armor save- 4+

(if mortal wound) Ebon-wrought Armour save - 5+

then Deathless Minions 6+ (5+ if ruler of the night)

then 6+ Infernal Standard if within range of Wight King with Standard.

[mmimzie]

also order matters here.

Your saves are rolled before the number of damage suffered is rolled. THen all other effects occur.