With King of Tokyo: Power Up! ? an expansion for the King of Tokyo base game ? after choosing a monster, each player takes the eight Evolution cards associated with that monster, shuffles those cards, and creates a personal deck. At the end of a player's turn, if she has three hearts, she draws one Evolution card and adds it to her hand; this is possible even in Tokyo (when hearts are normally useless) and even if the hearts are used for some other action, such as healing.