Thurindir gets +1 for each side quest in the victory display.

Setup: Search your deck for a side quest and add it to your hand. Shuffle your deck.

"He is one of the wandering folk – Rangers we call them."
–Barliman Butterbur, The Fellowship of the Ring

Action: Exhaust Kahliel's Tribesman to choose another Harad character. That character gets +1 +1 and +1 until the end of the phase.

But the Haradrim, being now driven to the brink, turned at bay, and they were fierce in despair...
–The Return of the King

Forced: After this ally enters play, search the top 5 cards of the encounter deck for a non-unique location and add it to the staging area. If no location enters play by this effect, discard Dúnedain Pathfinder. Shuffle the encounter deck.

Response: When the active location leaves play as an explored location, discard Eryn Galen Settler to discard a location in the staging with the same title as the just explored location.

Response: When you play an event, give it Doomed 1. to draw a card. You cannot trigger this ability if you have already triggered the ability of a Steward of Orthanc this round.

"...the power of Orthanc cannot be lightly thrown aside..."
–Saruman, The Two Towers

Immune to player card effects.

Damage from undefended attacks against you must be assigned to Tamed Mûmak.

If Tamed Mûmak leaves play, the controlling player is eliminated.

Response: After Hirgon quests successfully, play a ally from your hand, reducing its cost by 1 (to a minimum of 1). Then, you may raise your threat by 1 to give that ally +1 and +1 until the end of the round.

"Hirgon I am, errand–rider of Denethor, who bring you this token of war."
–The Return of the King

While a side quest is in the victory display, Rider of Rohan does not exaust to quest.

"Who are you, and what are you doing in this land?" said the Rider, using the Common Speech of the West...
–The Two Towers

Response: Discard Dúnedain Lookout to cancel the 'When Revealed' effects of an enemy just revealed from the encounter deck.

"Travellers scowl at us, and countrymen gives us scornful names."
–Aragorn, The Fellowship of the Ring

Response: After Fastred defends an enemy attack, return that enemy to the staging area to reduce your threat by 2. (Limit once per phase.)

"King's man! King's man!" his heart cried within him.
–The Return of the King

Defender of Cair Andros gets +X where X is the tens digit of your threat. (Limit +4

Valour Response: After Defender of Cair Andros is declared as a defender, deal 1 damage to the attacking enemy.

Action: Exhaust Southron Refugee to reduce the cost of the next Harad ally you play this phase by 1.

...to the land of the Haradrim came only a tale from far off...
–The Return of the King

Folco Boffin gets -1 threat cost for each Hobbit hero you control.

Action: Discard Folco Boffin to reduce your threat by 7. (Limit once per game for the group.)

...he had many friends, especially among the younger generation of Hobbits (descendants mostly from Old Took)
–The Fellowship of the Ring

Action: Spend 1 resource to ready Knight of Dale. (limit once per round).

Valour Action: Ready Knight of Dale (limit once per round.)

Response: After Riddermark Knight is declared as an attacker, it gets +2 for this attack. At the end of this attack, discard Riddermark Knight.

As long as you do not have cards in your hand, Eregion Survivor gets +1 +1 and +1

Cannot have restricted attachments. Enters play exhausted.

Leaflock gets +1 for each damaged Ent you control (limit +4

While Abaan is free of encounters, the first player gains control of Abaan.

Response: After Abaan exhausts, choose a Harad character to get +1 +1 and +1 until the end of the round.

If Abaan leaves play, the players lose the game.

Cannot have restricted attachments.

Action: Deal 2 damage to Quickbeam to ready him. (Limit once per phase.)

"...he can move like a wind when he is roused."
–Pippin, The Two Towers

Reduce the cost to play Halfast Gamgee by 1 for each side quest in the victory display.

Response: After Halfast Gamgee enters play, add 1 resource to a hero's resource pool.

"He works for Mr. Boffin at Overhill and goes up to the Northfarthing for the hunting."
–Sam Gamgee, The Fellowship of the Ring

Response: After Beorning Guardian participates in an attack that destroys an enemy, discard Beorning Guardian to place X progress on a location, where X is the destroyed enemy's printed

"...if it were not for the Beornings, the passage from Dale to Rivendell would long ago have become impossible."
–Glóin, The Fellowship of the Ring

Response: After Emyn Arnen Ranger commits to the quest, choose an enemy with a Trap attachment. Until the end of the phase, Emyn Arnen Ranger gets +X where X is the chosen enemy's printed

The first player gains control of Poros Garrison.

Immune to player card effects.

You can optionally engage an additional enemy during the encounter phase.

If Poros Garrison leaves play, the players lose the game.

Each Dale character you control with a player attachment gets +1

Response: After you play an attachment on a Dale character without an attachment, draw a card.

"He is a strong king, and his realm now reaches south and east of Esgaroth."
–Glóin, The Fellowship of the Ring

While playing an Item attachment, Bard son of Brand is considered to have the printed and icons.

Response: When a character leaves play, return each attachment attached to that character to its owners hand. (Limit once per phase.)

Reduce the cost to play Armor attachments on Redwater Sentry by 1.

Redward Sentry gets +1 and gains sentinel while it has an Armor attachment.

North Realm Lookout gets +1 and does not exhaust to quest while it has an Item attachment.

There were people on the look–out on the banks.
–The Hobbit

Reduce the cost to play Weapon attachments on Warrior of Dale by 1.

Warrior of Dale gets +1 and gains ranged while it has a Weapon attachment.

Action: Exhaust Long Lake Trader to move an Item attachment from a character you control to another eligible character.

"Nowhere are there any men so friendly to us as the Men of Dale."
–Glóin, The Fellowship of the Ring

The first player gains control of Haldan while he is free of encounters.

While there is an active location, Haldan does not exhaust to quest.

If Haldan leaves play, the players lose the game.

Sentinel.

Response: After Grimbeorn the Old defends an attack, spend 1 resource from his pool to declare him as an attacker against that enemy (and resolve his attack). The defending enemy gets -2 for this attack.

Guardian of Esgaroth gets +1 +1 +1 and +1 hit point for each different player card attachment it has. (Limit +3 to each.)

The men of the lake–town Esgaroth were mostly indoors, for the breeze was from the black East and chill, but a few were walking on the quays, and watching...
–The Hobbit

Combat Action: Choose a Beorning ally with printed cost 3 or more in your hand or discard pile. Discard Beorning Skin-changer to put that ally into play.

"...sometimes he is a huge black bear, sometimes he is a great strong black–haired man with huge arms and a great beard."
–Gandalf, The Hobbit

Response: After Long Lake Fisherman enters play, name a number. Then, search the top 5 cards of your deck for a card whose printed cost is equal to that number and add it to your hand. Shuffle your deck.

While the active location has an attachment on it, Haldan does not exhaust to quest.

Response: When the active location is explored, draw 1 card for each attachment on it.

Response: After you play Wiglaf, play an Item attachment on him from your hand for no cost.

Action: Exhaust an attachment on Wiglaf to ready him. (Limit once per phase.)

Cannot have restricted attachments.

Response: After Meneldor enters or leaves play, place 2 progress on a location.

...Meneldor young and swift. –The Return of the King

Cannot have attachments.

Planning Action: Attach Wild Stallion to an ally you control. (Counts as a Mount attachment with the text: "Restricted. Limit 1 per ally. Attached ally gets +1 +1 +1 and +1 hit point.")

Encounter. Surge.

Cannot have restricted attachments.

When Revealed: The first player chooses a player to take control of Eagle of the North. The chosen player may choose and discard a non-unique enemy in the staging area.

Immune to player card effects.

While Urdug is free of encounters, the first player gains control of Urdug.

If Urdug is destroyed, the players lose the game.

Immune to player card effects.

While Tiny is free of encounters, the first player gains control of Tiny.

Forced: After Tiny exhausts, raise your threat by 2.

If Tiny is destroyed, the players lose the game.

Combat Action: Play a Silvan ally from your hand. You do not need a resource match for this ally. (Limit once per round.)

"It is a crime to wander in my realm without leave."
–The Hobbit

Forest Road Traveler gets +1 +1 and +1 for each attachment on the active location.

Only on the Road would travellers be found...
–The Fellowship of the Ring

Cannot have attachments.

Action: Ready Giant Bear. At the end of the phase in which you trigger this effect, shuffle Giant Bear into your deck. (Limit once per phase.)

"As a bear he ranged far and wide"
–Gandalf, The Hobbit

Cannot attack or defend.

Response: After Galion enters play, he gets +1 until the end of the round.

"Here am I waiting and waiting down hero, while you fellows drink and make merry and forget your tasks. Small wonder if I fall asleep from weariness!"
–The Hobbit

While there is at least 1 side quest in the victory display, ready Thalion at the beginning of the combat phase.

While there are at least 3 side quests in the victory display, Thalion loses the ally card type, gains the hero card type and the resource icons of each sphere on a side quest in the victory display.

While Dáin Ironfoot is defending, he gains,"Action: Discard the top card of your deck to give Dáin Ironfoot +1 for this attack. (Limit 3 times per phase.)"

"The time of my thought is my own to spend."
–The Fellowship of the Ring

Action: Discard the top 3 cards from your deck to ready Soldier of Erebor. (Limit once per round.)

Ranged.

Reduce the cost to play Mirkwood Hunter by 1 for each attachment on the active location.

...they were brave and well–armed and even the Wargs dared not attack them if there were many together...
–The Hobbit

Reduce the cost to play Item attachments on Descendant of Girion by 1.

–Glóin, The Fellowship of the Ring