Treachery
Terror.
Revelation - If there are no Extradimensional locations in play, Vast Expanse gains surge. Otherwise, test (X), where X is the number of Extradimensional locations in play (max 5). For each point you fail by, take 1 horror.

Treachery
Hex.
Revelation - Test (5). For each point you fail by, discard the top card of your deck.

Treachery
Hex. Hazard.
Revelation - Each investigator at a Sentinel Hill location tests (4). Each investigator who fails takes 2 damage.

Treachery
Hazard.
Revelation - Discard cards from the top of the encounter deck until a location is discarded. Resolve that location's 'revelation' ability, then move to that location.

Enemy
Creature. Monster. Abomination.
Prey - Lowest .
Hunter.
While Avian Thrall is being attacked using a Ranged, Firearm, or Spell asset, it gets -3 fight.

Enemy
Monster. Abomination.
Massive.
Brood of Yog-Sothoth gets +1 health and cannot be damaged or attacked except using the ability on Esoteric Formula.
-H.P. Lovecraft, "The Dunwich Horror"

Enemy
Humanoid. Criminal. Elite.
Prey - Highest .
Hunter.
Forced - After an investigator at Clover Club Pit Boss's location gains any number of clues: Clover Club Pit Boss readies, engages that investigator, and makes an immediate attack.

Enemy
Monster. Abomination.
Prey - Lowest .
Hunter.
Forced - After you perform an attack against the Conglomeration of Spheres using a Melee card: Discard that card.

Enemy
Monster. Shoggoth.
Spawn - Nearest Altered location.
Forced - When Crazed Shoggoth attacks: If this attack would defeat an investigator, that investigator is instead killed.

Enemy
Humanoid. Sorcerer.
Spawn - Base of the Hill.
Forced - At the end of the enemy phase, Devotee of the Key moves once toward Sentinel Peak. If Devotee of the Key is already at Sentinel Peak, discard it and add 2 doom to the current agenda, instead.

Enemy
Monster. Abomination.
Spawn - The location to your right (or your location if there is no location to your right).
Emergent Monstrosity enters play exhausted.

Enemy
Monster. Abomination.
Hunter.
While you are engaged with Grappling Horror, you cannot move.

Hunting Horror
Spawned from the Void
Enemy
Monster. Elite.
Hunter. Retaliate.
Forced - At the start of the enemy phase: Reveal a random token from the chaos bag. If the revealed token has a , , , , or symbol, ready Hunting Horror.
Forced - When Hunting Horror leaves play, place it in the void.

Enemy
Monster. Yithian.
Spawn - Any Extradimensional location.
Hunter.
Forced - When Interstellar Traveler enters a location: Flip 1 clue on that location to its doom side and place it on Interstellar Traveler, or place 1 doom on Interstellar Traveler if there are no clues on that location.

Enemy
Creature. Monster. Abomination.
Spawn - Farthest location from you.
Prey - Lowest .
Hunter. Retaliate.

Enemy
Humanoid. Criminal. Syndicate.
Retaliate.
Forced - After Mobster attacks you: Lose 1 resource.

Enemy
Humanoid. Criminal. Syndicate.
While O'Bannion's Thug is engaged with you, you cannot gain resources.

Enemy
Humanoid.
Spawn - Any empty location.
Retaliate.
After you defeat Servant of Many Mouths: Discover 1 clue at any location.

Enemy
Monster. Abomination.
Prey - Lowest .
Hunter.
Forced - When Servant of the Lurker attacks you: Discard the top 2 cards of your deck.

Seth Bishop
Sorcerer of Dunwich
Enemy
Humanoid. Sorcerer. Elite.
Retaliate.
-H.P. Lovecraft, "The Dunwich Horror"
