The Master's Key
From WoWWiki
- The Master's Key
- Binds when picked up
- Unique
- Item Level 1
The Master's Key is the key (and attunement) to enter Medivh's tower of Karazhan in Deadwind Pass.
Source
This item is a reward from the quest 
[70] Return to Khadgar. See The Master's Key/In-Depth for a detailed description on the questline.
Patch changes
Patch 2.4.0 (3/25/08): Made to not be needed to enter Karazhan.
- Though it will still be needed (in the absence of an available rogue) to open the main and side entrance gates.
