All Veterans of the Long War have these rules
Talent for Murder - if a Night Lords unit outnumbers one or more enemy infantry units during any initiative step in which they fight an assault , they gain +1 to wound ( bulky models count as 2 models and very bulky count as 3)

Nostraman Blood - all models with this special rule fall back +1" further than normal , if the fail a pinning test , they may elect to fall back instead

Night Vision

From the Shadows - all units with this special rule have a 6+ cover save on the first turn of the game . even in open ground this may be combined with stealth etc as normal , but other forms of cover which provide a higher save supersede it

Seeds of Dissent - if an armies warlord is slain , each unit in the army with this special rule must take an immediate morale check as if they hailed just suffered 25% casualties from shooting
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Legion Specific Wargear:

Nostroman Chainglaive – Any model eligible to take a Power Weapon may instead take a Chainglaive (same cost).
Range - | Str +1 | AP 3 | Melee, Two-Handed, Rending


Trophies of Judgement – (5 points) Grants the character the Fear special rule
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Cover of Darkness – The force may impose Night Fighting for the duration of the first turn on any mission on a 4+ if not already occurring normally. Night Fighting imposed in this manner carries on to the second and third turn on a 5+ and 6+ respectively.

Terror Tactics – Chosen must be taken as the compulsory Troops choices and may be taken as additional Troops if desired.

Claw Assault – Chosen and Chaos Space Marines may take either a Dreadclaw or Space Marine Drop Pod as a dedicated drop pod and begin the game in reserve.
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Limitations
• Cannot take any non-Night Lords named characters, Dark Apostles, cult models (Plague Marines, etc.) or the Gift of Mutation upgrade
• All models that can must take Veterans of the Long War
• May take 0-2 total of the following: units/vehicles with Daemon* or Daemonic Possession
* Warp Talons do not count towards this limitation; if Raptors or Warp Talons are taken, 0-1 unit of Furies may be taken, also ignoring the limitation
• No more than 1/3 of units/models may be Marked
• Must take an additional compulsory Troop choice
• May only take a single Heavy Support
• May not take fortifications.
• Any ally choices better than Allies of Convenience are Allies of Convenience.

Psykers have access to Divination instead of Pyromancy
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Chosen taken as troops choices (based on Terror Squads from HH):
Gain: Infiltrate, Preferred Enemy (infantry), Fear
Cannot take: special or heavy weapons (can still take combi weapons and pistols). One model may take a flamer.
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Warp Talons (Nostroman variant)
Any number may elect to take a Chainglaive instead of a pair of Lightning Claws, at a discount of 5 points per model. (Maybe make these an upgrade for raptors instead of a downgrade from Talons?)