Ok so I didn't know these existed till just now. I am pretty psyched cause they are cool. But apparently Artifacts have "secret" abilities. Some seem to be combat effective and quite the boon. Other purely cosmetic. Not sure if that disparity is certain or not, I personally don't mind but I know other will. Anyway here is a list I found on Reddit.
Oh sorry if there was another post for this, I did search but didn't find anything.
https://www.reddit.com/r/wow/comment...dden_artifact/