File:Kasim Sharim GM Chat 2.jpg

Summary
This information was presented as coming from a Blizzard Game Master and it should be noted that it has not been made clear if Blizzard representatives hold the authority to create lore, though they may clarify it, so this information may or may not be canon. It is also possible that the screenshot is not authentic and legit at all, so this information should probably be taken with a grain of salt until confirmation.

A screenshot of a in-game chat with a Game Master, discussing the lore behind the gnome blood mage Kasim Sharim.

Source

 * source (as a file link)