Today is the feast day of Fausta Felicitas, an ancient Roman Goddess of Good Fortune and Lucky Happenstance. Her name is essentially two words of the same meaning, likely doubled up for emphasis, for fausta in the Latin is the adjective "favorable" or "auspicious", while felicitas is the noun meaning "luck", "good fortune" or "happiness"; Her name can be translated as the nicely redundant "Lucky Luck", though "She of Auspicious Good Fortune" probably sounds better.
By the way, the Latin felix, "happy", and felis "cat" are related, through the theme of "fruitfulness", as cats have many young; I'm tempted, however, to interpret the connection as referring to purring, an obvious and defining feature of happy cats.
Her name evokes the Latin saying "Quod bonum faustum felix fortunatumque sit!", which translates as "May it be good, lucky, happy, and blessed!" According to Cicero (who lived 106-43 BCE), this phrase had been used since ancient times as the proper ritual formula said at the beginning of all kinds of projects or events to assure an auspicious outcome — for example, when cities or colonies were founded, at public rites, at the opening of festivals, or at sacrifices.
Images of this Goddess are found most often on Roman coins.
When casting the spells, the addition of the Latin saying "Quod bonum faustum felix fortunatumque sit!" as well as invoking the power of the Goddess herself would seem to ensure an even more successful outcome.
Found at The Obscure Goddess Online Directory