Arkham Horror LCG: The Lair of Dagon Mythos Pack is an expansion pack for the Arkham Horror LCG game. It is part of The Innsmouth Conspiracy cycle and serves as the next chapter in the unfolding story. In this Mythos Pack, players will venture into the decrepit halls and tidal caves of the Esoteric Order of Dagon, as they uncover the heart of the sea. The pack includes new tools, skills, and an assortment of player cards for every aspect, allowing players to upgrade their decks and prepare for the climactic conclusion of their campaign.