Tarot decks have to consist of exactly 78 cards made up of 22 Major Arcana cards and 56 Minor Arcana cards. No more and no less. They also need to include four different suits. In the traditional Rider-Waite deck, these are pentacles, swords, cups, and wands; however, some decks use different representations of these same four elements. Tarot will also always include court cards (traditionally page, knight, queen, and king), though some decks swap out pages for princesses or other minor shifts in the deck’s creative direction.
While oracle cards are used in a similar way—that is, as a tool of self-reflection—there are fewer rules. An oracle card deck can include any number of cards and meanings.
