Leviathan Extreme Mirror Drop Rate Too Low

[Kiroh]

You want one of the best weapons in the game? Ok!

You complain that you need to work for it? Either deal with it or look for something else to do.

Best weapons in the game? You mean behind High Allagan, Zodiac, and Relic Novus? Also, Relic Animus and Worn Zodiac are equivalent.

There are 5 weapons at least as good or better than tidal weapons, that's not "one of the best weapons in the game" by any stretch of the imagination.