Discard 2 cards from your hand to put Elven Jeweler into play from your hand, under your control.

"...to the Elven–smiths they were but trifles..." –Gandalf, The Fellowship of the Ring

Response: After Lindir enters play, if you have less than 3 cards in your hand, draw until you have 3 cards in your hand.

"To sheep other sheep no doubt appear different," laughed Lindir. "Or to shepherds. But Mortals have not been our study. We have other business."
–The Fellowship of the Ring

Response: After 1 or more cards are discarded from your hand, draw 1 card. Limit once per round.

"But have they the strength, have we here the strength to withstand the Enemy, the coming of Sauron at the last, when all else is overthrown?"
–The Fellowship of the Ring

Response: After an enemy engages you, ready Elrond's Champion.

"That is a chapter of ancient history which it might be good to recall: for there was sorrow then too, and gathering dark, but great valour, and great deeds that were not wholly vain."
–Gandalf, The Lord of the Rings

Response: After Rivendell Skirmishers exhausts to defend an attack from a non-unique enemy, discard each shadow card from that enemy.

It was said that Angmar was for a time subdued by the Elvenfolk coming from Lindon and from Rivendell.
–The Lord of the Rings

While the top card of your discard pile is an attachment, Warden of the Havens gets +2 and gains sentinel.

"...and if he comes, assailing the White Towers and the Havens, hereafter the Elves may have no escape from the lengthening shadows of Middle-earth."
–Galdor, The Fellowship of the Ring

While the top card of your discard pile is an ally, Mithlond Sea-watcher gets +2 and gains ranged.

But it was an old tradition that away over there stood the Grey Havens, from which at times elven-ships set sail, never to return.
–The Fellowship of the Ring

Veteran Sword-elf gets +1 and +1 for each copy of Veteran Sword-elf in your discard pile.

The elves were the first to charge. Their hatred for the goblins is cold and bitter.
–The Hobbit

Glorfindel can be played from your discard pile.

Action: Discard a card from your hand to ready Glorfindel. (Limit once per phase.)

"He is an Elf-lord of a house of princes."
–Gandalf, The Fellowship of the Ring

While the top card of your discard pile is an event, Sailor of Lune gets +1 and gains: "Cannot be damaged while committed to the quest."

"They are sailing, sailing, sailing over the Sea, they are going into the West and leaving us," said Sam, half chanting the words, shaking his head sadly and solemnly.
–The Fellowship of the Ring

Action: Discard a card from your hand to heal 1 damage on any character. (Limit twice per round).

"You are in Rivendell, and you need not worry about anything for the present."
–Gandalf, The Fellowship of the Ring

Lindon Navigator does not exhaust to commit to a quest, and can commit to quests while exhausted.

Forced: After resolving a quest to which Lindon Navigator was committed, either discard it from play or discard 1 card from your hand.

As an additional cost to play Guardian of Rivendell from your hand, you must discard 2 cards from your hand.

"Indeed there is a power in Rivendell to withstand the might of Mordor, for a while."
–Gandalf, The Fellowship of the Ring

X is half the level of Starla, rounded up.

Response: After Starla is discard from your hand or deck, play her.

Response: After Starla exhausts, place 1 progress on a location.

At the end of the round, discard Galadriel from play.

Response: After you play Galadriel from your hand, search the top 5 cards of your deck for an attachment of cost 3 or less and put it into play. Put the remaining cards back in any order.

At the end of the round, discard Elrond from play.

Response: After Elrond enters play, choose one:

• heal all damage on a hero
• discard a Condition attachment
• each player draws 1 card.

While Elrohir is in play, Elladan gets +2 Attack.

Response: After you optionally engage an Orc enemy, ready Elladan.

...they rode often far afield with the Rangers of the North, forgetting never their mother's torment in the dens of the Orcs.

-The Return of the King

While Elladan is in play, Elrohir gets +2 Defense.

Response: After you optionally engage an Orc enemy, ready Elrohir.

"From the North we came with this purpose, and from Elrond our father we brought this very counsel."

-The Return of the King

At the end of the round, discard Galadriel from play.

Response: After you play Galadriel from your hand, search the top 5 cards of your deck for an attachment of cost 3 or less and put it into play. Put the remaining cards back in any order.

Response: After Arwen Undómiel exhausts, choose a character. That character gains sentinel and gets +1 until the end of the round.

...in whom it was said that the likeness of Lúthien had come on earth again...for she was the Evenstar of her people.
–The Fellowship of the Ring

At the end of the round, discard Elrond from play.

Response: After Elrond enters play, choose one: heal all damage on a hero, discard a Condition attachment, or each player draws 1 card.

Response: After you play Rivendell Minstrel from your hand, search your deck for 1 Song card and add it to your hand. Shuffle your deck.

As Elrond entered and went towards the seat prepared for him, Elvish minstrels began to make sweet music. –The Fellowship of the Ring

Action: Exhaust Gildor Inglorion to look at the top 3 cards of your deck. Switch one of those cards with a card from your hand. Then, return the 3 cards to the top of your deck, in any order.

"Go not to the Elves for counsel, for they will say both no and yes." –Frodo Baggins, The Fellowship of the Ring

Sentinel.

Watcher of the Bruinen does not exhaust to defend.

Forced: After Watcher of the Bruinen defends, either discard it from play or discard 1 card from your hand.

Response: After Arwen Undómiel exhausts, choose a character. That character gains sentinel and gets +1 until the end of the round.

...in whom it was said that the likeness of Lúthien had come on earth again...for she was the Evenstar of her people.
–The Fellowship of the Ring

Action: Choose and discard 1 card from your hand to draw 1 card. (Limit once per round.)

Beside Glorfindel there were several other counsellors of Elrond's household, of whom Erestor was the chief...
–The Fellowship of the Ring

Ranged.

Trollshaw Scout does not exhaust to attack.

Forced: After Trollshaw Scout attacks, either discard it from play or discard 1 card from your hand.

Action: Exhaust Imladris Stargazer to choose a player. That player looks at the top 5 cards of his deck and then returns them to the top of his deck in any order.

Action: Exhaust Master of the Forge to search the top 5 cards of your deck for any 1 attachment and add it to your hand. Shuffle the other cards back into your deck.

Response: After a card effect adds any number of resources to the resource pool of a hero you control, Harbor Master gains +1 until the end of the round.

For the Elves of the High Kindred had not yet forsaken Middle–earth, and they dwelt still at that time at the Grey Havens...–The Fellowship of the Ring

Secrecy 2.

"Elrond is sending Elves, and they will get in touch with the Rangers, and maybe with Thranduil's folk in Mirkwood." –Gandalf, The Fellowship of the Ring

Discard 2 cards from your hand to put Elven Jeweler into play from your hand, under your control.

"...to the Elven–smiths they were but trifles..." –Gandalf, The Fellowship of the Ring

Response: After 1 or more cards are discarded from your hand, draw 1 card. Limit once per round.

"But have they the strength, have we here the strength to withstand the Enemy, the coming of Sauron at the last, when all else is overthrown?"
–The Fellowship of the Ring

Response: After Lindir enters play, if you have less than 3 cards in your hand, draw until you have 3 cards in your hand.

"To sheep other sheep no doubt appear different," laughed Lindir. "Or to shepherds. But Mortals have not been our study. We have other business."
–The Fellowship of the Ring

While the top card of your discard pile is an ally, Mithlond Sea-watcher gets +2 and gains ranged.

But it was an old tradition that away over there stood the Grey Havens, from which at times elven-ships set sail, never to return.
–The Fellowship of the Ring

While the top card of your discard pile is an attachment, Warden of the Havens gets +2 and gains sentinel.

"...and if he comes, assailing the White Towers and the Havens, hereafter the Elves may have no escape from the lengthening shadows of Middle-earth."
–Galdor, The Fellowship of the Ring

Lindon Navigator does not exhaust to commit to a quest, and can commit to quests while exhausted.

Forced: After resolving a quest to which Lindon Navigator was committed, either discard it from play or discard 1 card from your hand.

While the top card of your discard pile is an event, Sailor of Lune gets +1 and gains: "Cannot be damaged while committed to the quest."

"They are sailing, sailing, sailing over the Sea, they are going into the West and leaving us," said Sam, half chanting the words, shaking his head sadly and solemnly.
–The Fellowship of the Ring

Glorfindel can be played from your discard pile.

Action: Discard a card from your hand to ready Glorfindel. (Limit once per phase.)

"He is an Elf-lord of a house of princes."
–Gandalf, The Fellowship of the Ring

Action: Discard a card from your hand to heal 1 damage on any character. (Limit twice per round).

"You are in Rivendell, and you need not worry about anything for the present."
–Gandalf, The Fellowship of the Ring

As an additional cost to play Guardian of Rivendell from your hand, you must discard 2 cards from your hand.

"Indeed there is a power in Rivendell to withstand the might of Mordor, for a while."
–Gandalf, The Fellowship of the Ring

Veteran Sword-elf gets +1 and +1 for each copy of Veteran Sword-elf in your discard pile.

The elves were the first to charge. Their hatred for the goblins is cold and bitter.
–The Hobbit

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

Response: After Wandering Exile commits to a quest, discard a card from your hand to ready Wandering Exile.

"The Elves have their own labours and their own sorrows...
–Gildor, The Fellowship of the Ring

Response: After Wandering Exile commits to a quest, discard a card from your hand to ready Wandering Exile.

"The Elves have their own labours and their own sorrows...
–Gildor, The Fellowship of the Ring

At the end of the round, discard Galadriel from play.

Response: After you play Galadriel from your hand, search the top 5 cards of your deck for an attachment of cost 3 or less and put it into play. Put the remaining cards back in any order.

At the end of the round, discard Elrond from play.

Response: After Elrond enters play, choose one:

• heal all damage on a hero
• discard a Condition attachment
• each player draws 1 card.

While Elrohir is in play, Elladan gets +2

Response: After you optionally engage an Orc enemy, ready Elladan.

...they rode often far afield with the Rangers of the North, forgetting never their mother's torment in the dens of the Orcs. –The Return of the King

While Elladan is in play, Elrohir gets +2

Response: After you optionally engage an Orc enemy, ready Elrohir.

"From the North we came with this purpose, and from Elrond our father we brought this very counsel."
–The Return of the King