Ewww I have to go back to Azeroth?

Next up in the key/attunement fun is Karazhan! The is required for every player wishing to enter the zone. This chain can be picked up at 68. It starts with two quests given by Archmage Alturus in Deadwind Pass. Some running around will happen then you will be given a quest to retrive the first key fragment from Shadow Lab. (Note the 2nd and 3rd fragments can be collected in either order)

1. First Key Fragment- This one is found in the final room of Shadow Lab. An Arcane Urn is to the left of the final boss, Murmur. This can be used before the boss fight, you won't agro him, but activation does spawn a weak elite elemental that you must fight and loot the fragment from him.
2. Second Key Fragment- Steamvaults holds the second fragment. It is in the water to the right of the ramp leading up to the first boss, Hydromancer Thespia. Again a brief fight with a elite elemental will insue. This one can be stealth run depending on gear/spec.
3. Third Key Fragment- The Arcatraz has the final key fragment, again no bosses are required to fight. Up the ramp and in the room filled with big VWs the corner to the right has the final arcane container. I stealthed to the container on Maelis but couldn't kill the guardian before a VW pathed over and killed me. I'm sure it's possible with a bit of luck, but hey you need to run the place with a group for rep and gear anyway just get it then.

Some more running around after this and then a final chat with Medivh in Black Morass after you have completed the event in the instance you raps up the quest line.