Dream Blades: Musashi

Its form is a pair of kodachis, one stored in each end of the sheath. It's apparently named after Musashi Miyamoto, a historical samurai known to fight using two swords in hand. Supposedly its power is to cut 'what cannot normally be cut', what this means is unclear. Though in Continuum Shift it's heavily impiled that it is able to destroy a magical field or barrier, or possibly anything it chooses to cut.