These are part of the Isengard culture because we all know how the Men in that culture kinda got boned.

I just had a mechanic idea and immediately gave it to them.

•Grima, Spy of Saruman
Minion • Man
Strength-4
Vitality-3
Roaming-3
Lurker.
When you play Grima, you may exert him twice and spot a site. Until the end of the turn, Grima has the game text of that site.
"’...in two ways may a man come with evil tidings. He may be a worker of evil; or he may be such as leaves well alone, and comes only to bring aid in time of need.’"
Should be "a site on the site path..." otherwise, a cool card! Can you imagine this guy in Tower Block with Deep of Helm?
This represents Grima (and the other sellouts of Rohan) making fertile grounds for invasion. Moving things around to create a sitution suitable for Saruman.

Rohirrim Betrayer
Minion • Man
Strength-5
Vitality-2
Roaming-3
While at your site, this minion is strength +3 and damage +1.
While at an opponent’s site, this minion gains lurker.
With Saruman’s power growing, many of the Rohirrim took up arms against their own kindred.
Interesting. Very interesting. That minion’s pretty cheap, though, for one that could be strength 8, vitality 2 if you control sites well.
You See Much
Condition
Strength -1
To play, exert an Man. Bearer must be an unbound companion. Limit 1 per bearer.
Each time bearer wins a skirmish involving your Man, you may replace the fellowship’s current site.
"’...too much.’"
I like the title, perfect card tie in! Good job...and it reminds me of the old cards like Rohan is Mine and Banished.
One Serpent Devouring
Event • Response
If an Man loses a skirmish, discard an artifact or possession borne by the winning character.
"’One of the Dunedain Rangers I thought he was. His cloth was spoor. And yet he bores a strange ring. Two serpents with emerald eyes.’"
Hmm...mighty powerful there, although balanced. Lore should be "His cloth was poor..." You stuck in an extra S. Title and lore don’t exactly make sense with the action. Title and lore would befit a card better.
Spare His Failing Years
Event • Response
If an Man is assigned to a skirmish, make an unbound companion strength -2 until the regroup phase.
"’Why do you lay these troubles on an already troubled mind? Can you not see? Your uncle is wearied by your malcontent... your... warmongering.’"
Hmm...that’s very powerful there. Up the twilight, IMO. I love the lore!!
Traitor’s Dagger
Possession • Hand Weapon
Strength +1
Bearer must be an Man. You may play this possession any time you could play a skirmish event.
When you play this possession, you may make the Free Peoples player wound a companion assigned to a skirmish.
Nice! Good.
Okay, so I’ve kind of departed from that first idea of sites and gone for a "we lose, we still win" type of deal (which is still cool). But here are a few more like the first.

•Forsaken Lands
Condition • Support Area
For each of your sites in the current region, each Man is strength +2.
Maneuver: Discard this condition to replace a site in the current region (except the current site) with a site from your adventure deck.
"’Saruman the White has ever been our friend and ally.’"
Hmm...that’s incredibly powerful. Although your men won’t be very strong to begin with...
Evil Tidings in Fair Lands
Event • Shadow
Exert an Man to replace the current site with a site from your adventure path.
"’He was ambushed by Orcs. If we don’t defend our country, Saruman will take it by force.’"
Nice.
King’s Guard
Minion • Man
Strength-9
Vitality-3
Roaming-3
Lurker.
If at your site, this minion must be assigned to skirmish a companion with strength 10 or more.
While you can spot another minion that has the title King’s Guard, this minion is damage +1.
Even in the King’s court, whispers of a new power spread like wildfire.
Hmm...that’s very powerful with the potential boosts from Forsaken Lands...
And for the synergy:

Informant’s Information
Event • Shadow
Exert or discard your Man to play an Orc or Uruk-hai from your discard pile.
"’They will flee to Helm’s Deep, the great fortress of Rohan. It is a dangerous road to take through the mountains. They will be slow. They will have woman and children with them.’"
Nice!!
Like ’em?