There are several kinds of Membership cards among the Special cards.
The Membership cards all entitle the investigator to have a special type of encounter in some location, and may require them to have it in place of the usual encounter at that location.
List of Membership Cards
- "One of the Thousand" Cult Membership entitles and requires the investigator to have a Cult Encounter in place of the standard encounter at the Black Cave, the Unvisited Isle, or the Woods in Arkham.
- Sheldon Gang Membership gives the investigator the option of a random encounter when ending the turn in a street location.
- Silver Twilight Lodge Membership requires the investigator to have an encounter at the Inner Sanctum in place of an encounter at the Silver Twilight Lodge