Talk:Trial of Perfection/@comment-108.212.195.51-20180414143826/@comment-33460885-20180414144732

Those are artifact assemblers. You have to Rank VIII (8) at certain locations in order to "search" for them.

The more collections  you assemble, the higher chance of getting what you need.

Although, if you empty your wishlist, a few friends will send you artifact assemblers. You can also ask them directly to send you what you need.

You can even change your in game name to "artifact assemblers plz" or something along those lines. It could also help.