Book excerpt: TWO BRAND NEW STORIES! First, in “Chain of Command,” Pureheart the Powerful teams up with the Crusaders! But will their powers combined be a match for Bronto, a humanoid rock monster bent on destruction? Next, in “Mother’s Little Helper,” the hero She-Fox arrives in Riverdale on an important mission: to drive her son Shinji to school! But when terror strikes in the form of a dinosaur supervillain, will She-Fox need some help to take down the t-rex tyrant?