User blog comment:KnocknickKnock/Celestial combination attacks with Lucy"s 10 zodiac keys./@comment-50.14.119.89-20140406131058/@comment-7418318-20140408091525

If coming out on top is what you really care for, she wouldn't need any new keys for that.

While she's barely ever given the chance to show off, even with her current keys she could do some pretty amazing feats, if only Mashima would allow it.