do i still have to do argus quest chain to unlock it?
Not sure. As long as you can teleport down to Eredath you can likely ride over and walk in, I’d guess.
I did it last week on my shadow priest, but I wasn’t paying attention where I was in the quest chain.
well i’ve never even started the quest chain on my warlock. did it on my hunter when legion was current expansion or started it get 1/3 way through and quit after i kept dying over and over and over and over and over because blizzard wanted it to FEEL DANGEROUS. never touched it again on any of my other characters then ragequit for several years when they revealed the infamous alleria trailer/cutscene.