When Revealed: Each player must either discard 1 card from the top of his deck for each questing character he controls, or remove each character he controls from the quest.
The mist was flowing past him now in shreds and tatters. –The Fellowship of the Ring
When Revealed: Each player discards the top 3 cards of his deck. Until the end of the round, add 2 to the total 
in the staging area for each different card type discarded this way.
Shadow: Defending player discards the top 3 cards of his deck. Attacking enemy gets +1 
for each different card type discarded this way.
When Revealed: Attach to the current quest. Counts as a Condition attachment with the text:
When a player plays a card, increase its cost by 1 if there is a card that has the same title in its owner's discard pile.
"Earth, air and water all seem accursed. But so our path is laid." –Frodo, The Two Towers
When Revealed: Deal 1 damage to each exhausted character. Each player with a threat of 35 or higher must also discard each exhausted attachment he controls.
Shadow: Attacking enemy gets +1 (+3 instead if the defending player does not control at least 1 Clue objective.)
When Revealed: Discard the top 3 cards of the encounter deck. The first player must either remove X progress from among the quests in play, or assign X damage among characters he controls. X is the total of the discarded cards.
Shadow: If this attack destroys a character, raise your threat by the destroyed character's 
.
When Revealed: Each player must exhaust a character he controls. Attach Haunting Fog to the current quest. (Counts as a Condition attachment with the text: "Attached quest gets +6 quest points."
Fog still hung in veils upon the crumbling rock-wall...
–The Fellowship of the Ring
When Revealed: Each player must discard a random card from his hand. Each player then searces his deck for each other copy of the card he discarded, and discards those as well. Shuffle each searched deck.
Shadow: Discard a random card from the defending player's hand.
When Revealed: Each player must distribute damage among questing characters equal to the printed cost of the highest cost card in that player's discard pile.
Shadow: Attacking enemy gets +1 . If this attack destroys an ally, search your deck for another copy of that ally and discard it, if able.
When Revealed: Attach Death and Calamity to the current quest. Then, the first player reanimates the top X cards of his deck, where X is the number of copies of Death and Calamity in play.
Shadow: Attacking enemy gets +X where X is the number of Sorcery cards in play.
When Revealed: Either deal 1 damage to each exhausted character, or deal 5 damage to Minas Tirith.
Shadow: Attacking enemy gets +1 If this attack destroys a character, deal 2 damage to Minas Tirith.
When Revealed: Each player deals 1 damage to a hero he controls. Until the end of the round, treat the printed text box of each damaged character as if it were blank, except for Traits.
...a great cloud streamed slowly westward from the Black Land, devouring light... –The Return of the King
When Revealed: Each player discards each card in his hand that has the same title as a card in his discard pile. If no cards are discarded by this effect, Curse of Angmar gains surge.
...the Dúnedain were now few and all the peoples of Eriador diminished. –The Return of the King
When Revealed: Deal Life Drain to Thaurdir, as a shadow card.
Shadow: If attacking enemy is Thaurdir, he gets +3 for this attack. If this attack destroys a character, attach Life Drain to Thaurdir. (Counts as a Condition attachment with the text: "Thaurdir gets +3 hit points.")
When Revealed: Discard the top 3 cards of each player's deck. Each player discards each attachment he controls that has the same title as a card in his discard pile. If no attachments are discarded from play by this effect, Death and Decay gains surge.
When Revealed: Attach All is Lost to the first player's threat dial. (Counts as a Condition attachment with the text: "Each time you attack a Reanimated Dead, raise your threat by 1.")
Shadow: If attacking enemy is a Reanimated Dead, it attacks again after this attack.