In the sunken ruins of the temple, you find a grotto leading deep below the sea level. Much of the grotto is submerged underwater.
Setup: Set Shrine to Morgoth aside, out of play. Prepare the Grotto deck. Add the top 2 locations from the Grotto deck to the staging area, Grotto side faceup (the top 3 instead if there are 3 or more players in the game). The first player takes control of Captain Sahír, and the last player takes control of Na'asiyah (objective-ally sides faceup).
While an underwater location is the active location, players cannot play attachments or allies.
Forced: After a double-sided location is explored, add the top location from the Grotto deck to the staging area, Grotto side faceup.
You cannot advance unless there are at least 3 Underwater locations in the victory display.
In the center of the shrine, reverently placed on a large altar, lies a long black chest. As soon as you get close, Sahír knocks one of the heroes over and grabs it!
When Revealed: Make the set aside Shrine to Morgoth the active location, Grotto side faceup. Captain Sahír flips to his enemy side (removing all tokens) and makes an immediate attack against the first player. Remove Captain Sahír from the game. Each player searches the encounter deck and discard pile for an Undead enemy and adds it to the staging area. Shuffle the encounter deck.
You dive at Sahír, but he swiftly runs to the entrance, laughing as he seals you in. "Captain?! What about me?" Na'asiyah scream angrily. As soon as the entrace is sealed shut, the walls shudder, and water begins to leak rapidly from the ceiling and walls. "We have to get out of here!" the heroes shout, as the water level starts to rise.
While an Underwater location is the active location, players cannot play attachments or allies.
Shrine to Morgoth cannot have attachments and cannot enter the staging area.
Forced: At the beginning of the quest phase, flip Shrine to Morgoth to its Underwater side, without removing its progress tokens.
When Shrine to Morgoth is placed in the victory display, the players have escaped from the flooded grotto and win the game.
Shrine to Morgoth cannot have attachments and cannot enter the staging area.
Forced: If Shrine to Morgoth is the active location at the end of the quest phase, raise each player's threat by 5.
When Shrine to Morgoth is placed in the victory display, the players have escaped the flooded grotto and win the game.
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Sea-scorpion gets +2 if the active location is underwater.
Shadow: Attacking enemy gets +1 (+2 instead if the active location is Underwater).
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Cave Eel cannot be engaged unless the active location is underwater.
Forced: At the beginning of the encounter phase, return Cave Eel to the staging area unless the active location is Underwater.
While Undersea Grotto is the active location, reduce the cost of the first ally played by the players each round by 1.
Response: After you travel to Undersea Grotto you may flip it to its Underwater side.
Response: After you travel to Cursed Caverns, you may flip it to its Underwater side.
Response: After the players explore Cursed Caverns as the active location, each player may raise his threat by 2 to draw the bottom card of his deck.
While Water-logged Halls is the active location, each Undead enemy in play gets -1
Response: After you travel to Water-logged Halls, you may flip it to its Underwater side.
While Dark Abyss is the active location, characters cannot attack.
Forced: If Dark Abyss is the active location at the end of the quest phase, deal 1 damage to each character in play. Then, you may flip Dark Abyss to its Grotto side.
While Twisting Hollow is the active location, characters cannot ready from card effects.
Forced: If Twisting Hollow is the active location at the end of the quest phase, each player must discard 1 character. Then, you may flip Twisting Hollow to its Grotto side.
While Sunken Temple is the active location, treat each attachment as if its printed text box is blank (except for Traits).
Forced: If Sunken Temple is the active location at the end of the quest phase, discard 1 resource from each objective-ally an each hero's resource pool. Then, you may flip Sunken Temple to its Grotto side.
While Drowned Cave is the active location, Undead enemies cannot be engaged (return any engaged enemies to the staging area).
Forced: If Drowned Cave is the active location at the end of the quest phase, each player must discard the top 10 cards of his deck. Then, you may return Drowned Cave to the staging area.
When Revealed: You cannot flip the active location this round. If the active location is Underwater resolve its Forced effect as if it is the end of the quest phase. If there is no Underwater active location, Powerful Undertow gains doomed 3, instead.
When Revealed: Each player chooses a card type and discards each card in his hand that is not of the chosen type. If no cards are discarded by this effect, Into the Abyss gains surge.
Shadow: If the active location is Underwater search the encounter deck and discard pile for a Creature enemy, and add it to the staging area.
When Revealed: Each player must remove a character from the quest. If the active location is Underwater deal 2 damage to each character removed from the quest by this effect.
Shadow: Discard an attachment you control.
When Revealed: Add the top location from the Grotto deck to the staging area and flip that location to its Underwater side. This effect cannot be canceled.
Shadow: Attacking enemy gets +1 (+2 instead if the active location is Underwater).