You are playing Nightmare mode.

As the light grew stronger it showed a silent shrouded world. Below their refuge were white humps and domes and shapeless deeps beneath which the path that they had trodden was altogether lost...
–The Fellowship of the Rings

Begin with the standard quest deck and encounter deck for The Wastes of Eriador scenario.

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

2x Northern Warg

1x White Warg

1x Sudden Darkness

1x North Downs

2x Eriador Wastes

1x Cold from Angmar

3x Biting Wind

1x Freezing Blast

1x Shrouded Hills

3x Rugged Country

2x Pressing Needs

Then, shuffle the encounter cards in this Nightmare Deck into the remainder of the standard The Wasts of Eriador encounter deck.

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