If you control at least 5 Dwarf characters, draw 1 additional card at the beginning of the resource phase.

"He could write well and speedily, and often used the Elvish characters." –Gimli, The Fellowship of the Ring

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

Response: Pay 1 resource from Balin's resource pool to cancel a shadow effect just triggered during an attack. Then, deal the attacking enemy another shadow card. (Limit once per attack.)

"Well, it is the first time that even a mouse has crept along carefully and quietly under my very nose and not been spotted." –The Hobbit

While you control at least 5 Dwarf characters, Óin gets +1 and gains the resource icon.

Dwarves can make fire almost anywhere out of almost anything, wind or no wind... –The Hobbit

When counting the number of Dwarf characters you control, Bombur counts as two.

"Bombur is fattest and will do for two, he had better come alone and last." –Gandalf, 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

Gimli gets +1 for each damage token on him.