A few brave investigators must navigate an ever-shifting labyrinth of subterranean catacombs in the scenario from the Pallid mask Mythos Pack for Arkham Horror: The Card Game. The fourth Mythos Pack in the path to Carcosa cycle, The Pallid mask challenges players to survive the dangers and denizens of its treacherous tunnels, which come with scenario-speci C rules for placement and adjacency that are certain to make this adventure a fan-favorite. Meanwhile, the expansions new player cards feature a blend of higher-level versions of existing staples along with innovative new skill cards.