I would like to share with you a funny strategy based on Elves.
The main goal is to give a massive attack boost to Haldir heros with :
And so one-shot some big ennemy before attack.
I need to boost the willpower of Haldir and so use the discard mechanic of Noldor with :

1) Discard Elven-Light for protecor of lorien and boost willpower of Haldir
2) Play the Elven-light from discard pile, return it to hand and draw a card
3) return to 1)
With ressource generation and multiple Protector of Lorien, you could give an indecent boost of willpower to Haldir and draw a lot of card.
If no sufficient ressources, you could use drawed cards or Silver Harps for protector of Lorien.
Then use Fair and Perilous on Haldir which could easily gain a bonus of +11 attack.
We can also use these card to boost willpower of Haldir :

The miruvor could boost and ready Haldir. So Haldir could use is capacity for killing a big ennemy before ennemy attack and then reattack another ennemy after ennemy attack phase keeping boost from Fair and Perillous.
But with this mechanic, Haldir could be a strong questor or defender if needed with protector of lorien + Elven light.
I build a deck using this discard mechanic for boost and draw cards :
Discard
Total Cards: 51
Heroes (starting threat: 23)
Arwen Undómiel (The Dread Realm)
Glorfindel (Foundations of Stone)
Haldir of Lórien (Trouble in Tharbad)
Allies (3)
3x Master of the Forge (Shadow and Flame)
Attachments (27)
2x Steward of Gondor (Core Set)
2x Elven Spear (The Treachery of Rhudaur)
2x Rivendell Blade (Road to Rivendell)
2x Rivendell Bow (The Watcher in the Water)
2x Light of Valinor (Foundations of Stone)
3x Silver Harp (The Treachery of Rhudaur)
3x Unexpected Courage (Core Set)
1x Asfaloth (Foundations of Stone)
3x Protector of Lórien (Core Set)
1x Wingfoot (The Nin-in-Eilph)
2x Song of Battle (The Dead Marshes)
2x Song of Kings (The Hunt for Gollum)
2x Song of Wisdom (Conflict at the Carrock)
Events (21)
3x A Test of Will (Core Set)
3x Dwarven Tomb (Core Set)
3x Elrond's Counsel (The Watcher in the Water)
3x Elven-light (The Dread Realm)
3x Fair and Perilous (Across the Ettenmoors)
3x Daeron's Runes (Foundations of Stone)
3x Deep Knowledge (The Voice of Isengard)
Deck built with Rivendell Councilroom
I have used this deck on multiplayer games and one times Solo.
This deck use Elven spear for another discard/boost/draw mechanic with Elven-light and Stewart of Gondor for ressource generation.
With Stewart of Gondor & Arwen (ressource generation) / Protector of Lorien & Elven Spear (Discard for boost) / Elven-Light (Draw), you could each turn give +6 on a statistic of your choice and draw 6 cards.
The drawed cards could be used for more boost if needed.
With Fair and Perilous/Protectore of Lorien and/or Elven Spears, i can quickly boost Haldir to a total of 10-12 attacks, regulary 14-16 attacks and some times 20 attacks.
I play Dwarven tombs to replay Fair and Perillous, some untap effect (Unexpected courage) for multiple strong attacks with Haldir and some Silver Harp for free boost.
I have finally added draw effect from lore sphere and master of forge for fetching important attachments.
This deck have oneshot, with Haldir of Lorien, a Hill Troll, the Lich King and some other strong ennemies.
When needed, i have used it for strong questing with protector of Lorien. At last quest step, i can easily quest for 17 willpower.
With the strong draw capacity, the deck is steady.