Trichiliocosm

Suzuka Gozen's third noble phantasm. An ultimate noble phantasm that takes the form of her main katana. It is usually kept in its sealed state, making it a simple katana. Once its true name is unleashed, however, it allows high speed thinking and calculations far beyond anything a normal human could achieve, rivaling even the moon cell itself. It can also create and contain worlds within the sword, though for what purpose is unknown.