The Master's Touch

Objectives
Go into the Caverns of Time and convince Medivh to enable your Restored Apprentice's Key.
 * Master's Touch
 * Restored Apprentice's Key (provided)

Description
I've put together the very key I used as an apprentice. It looks completely functional as far as keys go. In regards to opening Karazhan, however, this might as well be a piece of scrap metal.

Without Medivh's consent, the key is worthless. Yes, of course I know Medivh is dead. This merely makes things difficult, not impossible.

There is a place in Azeroth called the Caverns of Time, guarded by the bronze dragonflight. Find a way inside, travel back in time and get Medivh to enable the key.

Rewards
You will receive:
 * 25,300 experience
 * +350 reputation with The Violet Eye

Progress
Who are you and what do you want?

Completion
That key, I recognize it. That is Khadgar's key... of course I haven't given it to him yet.