After reading various sections on Eldritch Horror's deck management, namely the sections on Searching, on Gaining Possessions and Conditions, and on Discarding, I've tried to sum up some aspects of deck management.
- Spells and Conditions (the 2 sided cards) never have a discard pile. Cards returned to them are shuffled right back in, while other deck types reshuffle their discard piles once the deck runs out. This is likely to keep the possible multiple outcomes of spells/conditions as varied and unpredictable as possible.
- Random cards are drawn from the top of single-sided card decks and from the bottom of 2-sided card decks. If a repeat (such as for a condition/spell card) is found, the drawing continues and, once finished, this "temporary" discard pile (i.e. the cards passed to find a valid card) is shuffled right back in. This approach is done to minimize the possibility of having to shuffle.
- Searching for a specific card or a kind of card (i.e. Madness) is done from the bottom of the deck and always followed by shuffling, but discard piles in the 1-sided decks are not shuffled back in. I don't know what rationale there would be for searching through the double sided cards from the bottom up as it seems marginally faster to search top to bottom.
Are there any other obvious or helpful guidelines and rationale to managing the decks?