You are playing Nightmare mode.

Forced: When the players advance to stage 2A, add Ancient Marsh-dweller to the staging area (from out of play or engaged with a player).

There was a deep silence, only scraped on its surfaces by the faint quiver of empty seed plumes, and broken grass–blades trembling in small air–movements that they could not feel. –The Two Towers

Begin with the standard quest deck and encounter deck for The NŒn-in-Eilph scenario.

Remove the following cards, in the specified quantities, from the standard encounter deck:

1x A Weary Passage (Stage 1B)

1x Impassable Marshland (Stage 2B)

3x Neekerbreekers

1x Hidden Eyot

3x Finger of Glanduin

2x Off Track

1x Low on Provisions

Then, shuffle the encounter cards in this Nightmare Deck into the remainder of the standard The Nin-in-Eilph encounter deck.

Finally, flip this setup card over and place it next to the quest deck. Its effects remain active throughout the game, which is now ready to begin.