For the collectors among you, that’s six versions of sixteen weapons (I hear you in the back saying there’s nineteen weapon types in Guild Wars 2, but it turns out Aurene is not a fan of aquatic weapons, so she’s vetoed them. Sorry, but I’m just not going to argue with a dragon over getting those in). That’s a grand total of ninety-six appearances.
You only have to craft a single precursor per weapon type, and no masteries are required (though there are a couple you’ll probably want to finish). Just play the story, gather materials, make your legendary weapon, and enjoy!
https://www.guildwars2.com/en/news/a-closer-look-at-the-guild-wars-2-end-of-dragons-legendary-weapons/