The swords are just really large swords Rakan can summon. They don't have any particularly special property. The latest Negima arc just ended a few chapters ago so we are kinda in between arcs right now. The next arc is supposed to be the last one but that still probably means at least a 100 more chapters to go.
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Pokemon VGC2011 NW Regional - Top 8
Pokemon VGC2011 US Nationals - 54th place