Your Pokemon X/Y Thoughts (SPOILERS ALERT)

[Mass Distraction]

Yeah maybe the sword design isn't great. Maybe a skull in the center of the sword would be nice.

Or pretty much anything that would make it resemble something more than a mysteriously floating sword.

Also, why does it always have to be a human spirit? Why can't it just be a spirit of another Pokémon?

Because then it would have the traits of those Pokemon inside, not really making it's own Pokemon.

But the ghosts in Pokémon tower never had the traits of their former selves (not without the use of Silph Scope, at least). I guess these creatures lose their powers after death.