Blood on the Altar is the third Mythos Pack in The Dunwich Legacy series Arkham Horror: The Card Game. This expansion challenges you to discover the secrets of Dunwich, where you suspect a series of recent disappearances might be related to the events in Arkham. But the more you research, the more you get the impression the townsfolk aren't exactly pleased to see you. There are secrets in this town that its citizens don't want to share… The third Mythos Pack in The Dunwich Legacy series for Arkham Horror: The Card Game. Investigators journey to Dunwich and explore many of its most infamous locations. Offers 60 new cards to expand your investigations in the Arkham Horror Files universe. brings new Talents, several new assets, events, and skill cards, and higher-level, more efficient versions of cards from the Core Set.