Response: After Ered Luin Miner is discarded from your deck, put it into play under your control.

Tools were to be found in plenty that the miners and quarriers and builders of old had used; and at such work the dwarves were still very skilled.
–The Hobbit

Forced: At the end of the round, discard Dwarven Sellsword unless the players as a group spend 1 resource.

...he did not altogether approve of dwarves and their love of gold...
–The Hobbit

Sentinel.

Response: When you play Erebor Guard from your hand, discard the top 2 cards of your deck to reduce its cost by 2.

...the fortress of the dwarves could not be taken by surprise. –The Hobbit

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

Response: After you play Erebor Toymaker from your hand, reduce the cost of the next attachment played this phase by 2.

There were toys the like of which they had never seen before, all beautiful and some obviously magical.
–The Fellowship of the Ring

Response: After Nori participates in an attack that destroys an enemy, put the top card of your discard pile on the bottom of your deck.

"You've left the burglar behind again!"
–Nori, The Hobbit

Response: After you play Fili from your hand during the planning phase, search your deck for Kili and put him into play under your control. Then, shuffle your deck.

"Fili is the youngest and still has the best sight."
–Thorin, The Hobbit

Response: After you play Kili from your hand during the planning phase, search your deck for Fili and put him into play under your control. Then, shuffle your deck.

"Let us join the throng!"
–The Hobbit

Action: Exhaust Bofur to search the top 5 cards of your deck for 1 Weapon attachment. Add that card to your hand and shuffle the other cards back into your deck.

There is no knowing what a dwarf will not dare and do for revenge or the recovery of his own. –The Hobbit

Response: After a hero is assigned any amount of damage, exhaust Dori to place that damage on Dori instead.

'I can't always be carrying burglars on my back,' said Dori, 'down tunnels and up trees! What do you think I am? A porter?' –Dori, The Hobbit

While you control at least 5 Dwarf characters, Glóin gains:

Response: After you play Glóin from your hand, choose a hero. Add 2 resources to that hero's resource pool.

Glóin lit several more torches, and then they all crept out, one by one... – The Hobbit

While you control at least 5 Dwarf characters, Bifur gains:

Response: After you play Bifur from your hand, draw 2 cards.

"My cousins! Bombur and Bofur – we have forgotten them, they are down in the valley!" –The Hobbit

Sentinel.

While you control at least 5 Dwarf characters, lower the cost to play Dwalin by 2.

Sentinel.

Response: After an enemy is revealed from the encounter deck, ready Gimli.

"Give me a row of orc-necks and room to swing and all weariness will fall from me!"
–The Two Towers