The Azure Glade had a shrine at the foot of a World Tree.
In the official 
[Blizzard] scenario map for Warcraft III called "Azure Glade Tower Defense";
Cruel magic has demented this forest's denizens beyond any hope of healing. Now they attack the World Tree, hoping to corrupt it in the misguided belief that it will end their agony. Protect the Tree from their onslaught.
-The Frozen Throne
In the Azure Glade lived a group of heroes who protected a World Tree against an invasion by the forces of Mnesthes. Their knowledge of towers were so vast that they were able to repel the invaders with towers alone, saving the World Tree from corruption.
D'vorjakque is the Emperor Sorcerer of these lands and a supremely powerful wizard at the paragon of the arcane arts.