Brown Water Rats cannot be damaged.
Forced: If the players are on stage 3 and all remaining enemies have the printed Rat trait, discard Brown Water Rats from play.
Shadow: Attacking enemy cannot be damaged this round.
If there are any unclaimed objectives in play, Spider of Dol Guldur gains surge.
Shadow: Attacking enemy gets +3 for each unclaimed objective in play.
Forced: When a card effect instructs a player to "look" at cards in the encounter deck and Ravenous Hawk is among those cards, that player must put Ravenous Hawk into play engaged with him. (This does not satisfy the Forced effect of stage 1B or 2B).
Forced: At the beginning of the refresh phase, if Hunting Warg entered play this round, search the encounter deck and discard pile for 1 copy of Hunters from Mordor and add it to the staging area, if able. Shuffle the encounter deck.
"...where the warg howls, there also the orc prowls."
–Aragorn, The Fellowship of the Ring
While Treetop Bird-eater is engaged with a player, characters controlled by that player cannot be healed.
Forced: At the beginning of the encounter phase, Treetop Bird-eater engages the player who controls Wilyador (regardless of threat).
When Revealed: The player guarding Gollum must either exhaust a hero he controls or Web-spinner gains surge.
Shadow: The player guarding Gollum must exhaust a character he controls.
Shadow Dweller does not make engagement checks while Cave Torch is in play.
Shadow: Shuffle Shadow Dweller back into the encounter deck.
While The Watcher is in the staging area, it cannot be damaged by player card effects.
If The Watcher is in the staging area at the end of the combat phase, each player must deal 3 damage to 1 character he controls.
Forced: If Trapdoor Spider damages a character, discard that character from play.
Lost: Trapdoor Spider engages the last player and makes an immediate attack.
When Revealed: Each player at this stage shuffles the card in his hand with the highest printed cost back into his deck.
Forced: At the end of the combat phase, if Giant Centipede is engaged with a player, that player chooses and adds it to a different player's staging area.
Cannot have attachments. Archery X.
X is the number of players in the game.
Mûmak Elite cannot take more than 3 damage each round.
Forced: After the engaged player discards any number of cards from his out-of-play deck, Guard Warg makes an immediate attack.
Shadow: Deal 1 damage to the defending character.
Forced: When Blood Hound engages you, raise your threat by 5.
Shadow: Either raise your threat by 10, or attacking enemy makes an additional attack against you after this one.
Forced: After Deadly Marsh Adder engages you, discard a damaged character you control.
Forced: After the players advance to a quest stage return Deadly Marsh Adder to the staging area.
Cannot have attachments.
While Swarm of Mosquitoes is in the victory display, it gains:"Forced: After the players advance to a quest stage, return Swarm of Mosquitoes to the staging area."
While it is Night Pack Hunters gets -30 engagement cost.
Forced: When you engage Pack Hunters, search the top 5 cards of the encounter deck for a Warg enemy, and put it into play engaged with you (top 10 cards instead if it is Night). Shuffle the encounter deck.
As an additional cost to travel to a safe location, one player must engaged Hoarwell River Serpent.
Forced: When you engage Hoarwell River Serpent, deal 1 damage to each damaged character you control.
While Giant Beetle is engaged with a player, it gains: "As an additional cost to travel to a safe location, Giant Beetle makes an immediate attack against the engaged player."
Damaged characters cannot be declared as attackers or defenders against Giant Beetle.
Surge. Grapple (most enemies grappled).
Forced: After Slitering Arm engages a player, it makes an immediate attack against that player.
Grapple (fewest enemies grappled).
Forced: After Crashing Arm is detaced from a location, deal it 3 shadow cards.
Shadow: Attacking enemy makes an additional attack after this one.
Great Shark gets +1 +1 and +1 for each Underwater location in the victory display.
Great Shark cannot be engaged or damaged unless the active location is Underwater.
Forced: At the beginning of the encounter phase, return Great Shark to the staging area unless the active location is Underwater.
When Revealed: Reveal a random card from the encounter discard pile and add it to the staging area, if able.
Forced: If A Murder of Crows would be destroyed, shuffle it back into the encounter deck instead.
Forced: If Wicked Wolf is dealt a shadow card with a riddle, the defending player must exhaust a character he controls.
Shadow: Return attacking enemy to the staging area after this attack.
Forced: After a character is declared as a defender against Venomous Spider give it 1 poison.
Shadow: Give 2 poison to the defending character.
Foced: When Erebor Bats attacks, the defending player discards 1 random card from his hand.
Burgle: The first player shuffles his deck and reveals the top card. He may discard 2 cards from his hand that match the card's cost and type.
Forced: After Great Warg attacks and destroys a character, remove all progress from the current quest.
Shadow: Defending player discards 1 attachment he controls.
Cannot have attachments or be optionally engaged.
While Hunting Hawk is in the staging area it gains,"Forced: After a player plays an ally, he must either exhaust it, or place 1 damage on an active location."
When Revealed: Misty Mountain Warg makes an immediate attack against you. If it destroys a character, place 2 damage on each active location.
Shadow: If this attack destroys a character, place 1 damage on an active location.