Board Thread:News and Announcements/@comment-37927318-20190308021202/@comment-32773359-20190308055152

You get the harps from assembling the Hints in History collection (found in Dark Forest). There’s one early quest where you’re directed to banish the griffin, then it never comes up again. If you have extra harps you can of course banish the griffin multiple times, but there’s no point in deliberately assembling lots of harps as you use more fixers doing that than you get from the griffin.