With King of Tokyo: Power Up! – an expansion for the King of Tokyo base game – comes the new monster Pandakai, a giant panda bear. 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.
Don't just take our word for it! Check out this review of King of Tokyo: Power Up.