#0 - Nov. 3, 2006, 2:13 p.m.
"However, the first mortal druid on Azeroth was Archdruid Malfurion Stormrage."
Source:
http://www.worldofwarcraft.com/info/encyclopedia/381.xml
The error here is that it was the Tauren who were first approached by Cenarius and inducted into the order of Druids. Years past and the Tauren forgot what Cenarius had taught them because he "left" and the battle with the Centaur consumed their interests.
So, the first Druid could not possibly have been Malfurion, as Cenarius hadn't even met the Night Elves while he was teaching the first Tauren Druids.
Here is the proof:
If you go to Thunder Bluff, a scroll sitting behind Hamuul Runetotem is titled:
Forestlord and the First Druids
and it goes on to read:
In time, the child, Cenarius, grew to the stature of
his proud father. A brother to both the trees and
the stars, the great hunter roamed the far places of
the world, singing the harmonious songs of the
dawning. All creatures bowed before his grace and
beauty - there were none so cunning as the son of the
moon and the white stag.
Eventually, Cenarius befriended the Shu'halo (Tauren) and spoke
to them of the turning world. The children of the
earth knew him as brother and swore to help him care
for the fields of life and the favored creatures of
their great Earthmother.
Cenarius taught the children of the earth to speak to
the trees and plants. The Shu'halo (Tauren) became druids and
worked great deeds of magic to nurse the land to
health. For many generation the Shu'halo hunted with
Cenarius and kept the world safe from the shadows
that stirred beneath it.
A timeline for this can be summized because Cenarius was still teaching Malfurion when The Burning Legion first attacked Azeroth:
"As the crisis unfolded, Cenarius taught Malfurion all he could and then sought out the other demigods of Azeroth. They were unaccustomed to the idea of working together; as a result, it took no little persuasion from Cenarius before they finally agreed on a course of action. They rode to the battlefront and found that the war was well underway."
Source:
http://www.worldofwarcraft.com/info/encyclopedia/350.xml
It is clear by the "Forestlord and The First Druids" that Cenarius was still very young (quoted as a "child") when he taught the Tauren and that the Invasion of the Burning Legion not yet occured so it would be many years before he would even meet Malfurion.
All evidence and history points towards Tauren as the first druids. If this is another situation of retcon that's fine, It just feels like the writers of the Druid/Cenarius article left out almost everything to do with Tauren; even going so far as to leave this entire history out.