Once cast, Caire's touch lasts one week or until its effect is used by the spell's recipient. When used, the target declares that he is going to try for a little good luck. The use of the spell must be declared before the player rolls for any normal d20 roll such as an attack, save, or check. Upon doing so, the player may roll the dice twice and use whichever result he prefers. No single creature can gain this divine favor more than once per week.