The Suit of Cups (聖杯, Seihai)? is one of the four Minor Arcana of the Tarot, along with Wands, Swords and Coins. In Tarot, cups relate to the element of Water, and therefore to situations and events most related to emotions. Thus, most cards of the suit of Cups are related to emotional issues or love situations. Additionally, Cups are also related to spiritual and religious matters, since the Cup was often considered the emblem of the clergy in old times.
List of Personas
In the Persona 2 duology, the Suit of Cups, along with the other Minor Arcana suits, refers to a group of Persona that can only be created through mutation; this is, a Persona is granted the Mutation ability, upon completing its moveset will mutate into another Persona, one belonging to one of the four Minor Arcanas.
In Persona 3, Cups are Shuffle Time cards granting various extra bonuses depending on the drawn card. Drawing a Cup card will grant extra healing at the end of the battle. The offered healing will vary with the card's value.
Persona 4 Golden
The Minor Arcanas are returned in Shuffle Time with the Suit of Cups restoring HP, and now SP. The value of the bonus augmented by the card's value.