actually, since all the 'other' weapons are non-rare, my goal was to make another weapon that could be included with the ones already in the bazaar. i didn't want it to outclass them so much that it would become a rare. i probably should have mentioned that i intended this to be non-rare.
this does the most damage out of any weapon in the game, so there needs to be a fairly substantial reason not to play it over a gavel. i suppose with the hp loss the cost could still be reduced from 5/4 to 4/3 though.
also, it's true that there are still more powerful weapons in the game, there are still scenarios where people would use it. mono-air might always want to use eagle's eye, but mono-entropy might not always want to use discord.