Effect updates and description changes can be seen here.

Fortune is an Integrity deck specific effect card. It gives the owner 7 gold when used. At the cost of 6G, this leads to a 2G profit for Integrity users due to their passive, and a 1G profit for all other SOUL types if they obtain this card through Echo Flower or Librarian.

One should have at least a few of these in their Integrity deck.