Guild Wars 2

you missread that one, you have to CLAIM them(get them from the historian guy) not USE them
you can keep them for however long you want(or until they remove it at some point)

I just went through TA with a group and got 60 on 2 paths, but only 45 on the 3rd.
It seems like the anti-farm mechanism is bugged, cause the dungeon reset on our first try on that way when 4 ppl had a network-error… so that mechanism counts bugged/failed runs as well, while the end-reward doesn’t