This is the final achievement I need for the Jani mount. I have everything except for hard green, and it hasn’t shown up so far in the 6 weeks I’ve been checking twice daily.
This achievement is completely out of the player’s hands. They have no agency in completing it, it’s just RNG & wait.
I hope blizzard eventually adjusts this like they did the other impossible bfa achievements so I can get my Jani mount. I sure ain’t getting it otherwise.
It’s a RNG wait fest, but at least it works properly, unlike some of the other achievements. Looking at you “a most efficient apocalypse” and your mobs that dont spawn. That one sucked till I finally got it.
I’m stuck on 1 chest left for Trove Tracker (the glowing arcane trunk in coldlight cavern), the slightest bit of lag and the vehicle UI bugs out for me and wont fire lazers no matter how i try time them. been stuck on it for years.
You and me both, hard green club. 
Of all the achievements to leave untouched in its original glory, huh? At least the other nearly-impossible ones allowed you to chip away at them.
Wowhead is helpful if you want to check without opening the wow client.