We steal the last Pillar from Sargeras. Makes sense.
What if the last pillar is Illidan's Warglaives. What if Legion ends with us empowering Illidan with the pillars, purifying his warglaives and he uses the power to not only close the gate in the tomb, but go through it. Joining the army of light on Argus.
If what doesn't kill you, makes you stronger. Then I should be a god by now.
Khadgar is the sixth pillar. We clobber him over the head and put him up for display.
They did say that. They said they havent really confirmed yet, but they want any appearance you earn to travel with you into the next expansion for transmog purposes.
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Theres plenty of things in real life that are temporary but we have to waste time on anyway. At least if your spending time on the game you are getting enjoyment out of it. Either way, they said they wanted artifact appearances to transfer over to next expac for transmog, so thats something that isnt temporary.
Would suck if it was Atiesh or something...
Guessing the 6th pillar is going to be the 7.3 zone. It was originally gonna be Thal'dranth, but they scrapped it saying they had "something even better" planned.
FFXIV - Maduin (Dynamis DC)
They kinda forgot about;
http://wow.gamepedia.com/Norgannon
So Tome of Norgannon?
Locations
For the Horde!
I don't know for the druid but at the end of titanstrike quest (Bm hunter artifact) mimiron state that for now the only solution to preserve hati essence is to bind it to the weapon until he find a way to give him a new body, imho at the end of the xpack hati become a regular pet into the stable.
Anyway the sixth pillar could be the eye of sargeras can't discount the option that blizzard pull a sort of yin and yang ending (given Illidan is named the child of light and shadow).
Issue with destroying the artifact is canonically there's at least one person with the artifact for each spec, How are you going to destroy 36 artifacts at once in a convincing way?
I also think the artifact weapon might be the final pillar. I honestly hadn't thought about it at all until I read your thread title on the front page. As I'm waiting for the thread to load I was thinking it would be the artifact. Great minds!
Someone else suggested the discs of Norgannon. I haven't finished leveling yet, so I don't know the whole story and can't say if that sounds plausible to me.