- Were you looking for the giant trees known as World Trees?
Ysera, the great Dreaming Dragon Aspect, rules over the enigmatic green dragonflight. Her domain is the fantastic, mystical realm of the Emerald Dream — and it is said that from there she guides the evolutionary path of the world itself. She is the protector of nature and imagination, and it is the charge of her flight to guard all of the Great Trees across the world, which only druids use to enter the Dream itself.
In recent times, Ysera's most trusted lieutenants (Lethon, Ysondre, Emeriss, and Taerar) have been warped by a dark new power within the Emerald Dream. Now these wayward sentinels have passed through the Great Trees into Azeroth, intending to spread madness and terror throughout the mortal kingdoms. Even the mightiest of adventurers would be well advised to give the dragons a wide berth, or suffer the consequences of their misguided wrath.