The Lord of the Rings: The Card Game – Nightmare Deck: The Wastes of Eriador expansion offers 20 new cards that can be swapped for specific cards from the encounter deck of the "The Wastes of Eriador" adventure pack. The goal is to raise the scenario’s difficulty to nightmare level, making each game more challenging and forcing players to plan their moves carefully. As part of Fantasy Flight Games’ Living Card Game (LCG) line, the expansion retains the core cooperative mechanic, where two teams team up against the game, and hand management remains essential: players must decide which cards to keep, which to discard, and when to use each ability. Variable player powers also allow each character to bring a unique set of abilities to the group, reinforcing the need for coordination and adaptability. The nightmare scenario introduces tougher encounters, stronger enemies, and narrative events that require quick and strategic decisions. To play, you need the base game set, the "The Wastes of Eriador" adventure pack, and of course the 20 expansion cards. The expansion also requires players to have English cards, as most components still lack a full translation, so those who want to play in Portuguese will need a near-complete translation or English cards. In short, if you enjoy high-level challenges, want to test your team’s resilience in tougher scenarios, and appreciate Tolkien’s epic atmosphere, this expansion is a great addition to your LCG repertoire.