In this Call of Cthulhu: The Card Game game, schisms with the followers of Yog-Sothoth lead to a race for lost arcane knowledge, supported by the Silver Twilight Lodge and Miskatonic University.
Rituals of the Silver Sothoth was designed by NuFenix and is posted to CardgameDB.com. Arcane in the Membrane was designed by Ray, as all his decks are, and can be found within the confines of his head.
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