World of Warcraft: Current Year

The "+50 achievement" is "Putting the Finite in Infinite", Wowhead says you need to reach 999 stacks of Unbound Limits on your Artifact AND complete a timed +50 or above M key, but just the key is enough to get it.

I'm currently at 543 stacks / versatility after today's Mythic raids, I should be at 800+ in 10 days.

I'm at versatility 850 now, should be at 999 within 4 days. If someone still needs a M+ carry for transmogs / title / achiev, let me know here and we can do that if you want.

I have a +47 key currently, but if you're only interested in a 30+ for transmogs or 40+ for title (The Infernal), it's cool if you have your own lower key too, makes it a bit easier.

Managed to get a Legion: remix achievement without even touching the remix servers, just logged into my retail character and it popped up.