"Er, please do remember that Shell Bell's only here for a finite amount of time, can make only a finite number of squares, and every book you request will cost a square of its own," says Juliet. "I might or might not find another me with mint powers before I run out even if I only use them for emergencies, since Slayers encounter, you know, lots of emergencies. And the squares and the fire wand are the only safe magic we have access to right now."