I mean look at it, you can see its got blades on both ends. When I think of a polearm that has a blade, I think of a spear, a lance, a javelin, a glaive, a halberd, etc. Never does the word "staff" come to mind; so why call it that? I just feel that calling it something like the "arc lance" or even "war bolt" would sound better.
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It would be nice if you could throw your double-ended slashing spear as a range attack to end your super. Like a last ditch effort.