Aessina

Aessina is one of the greater wilderness spirits who lurks in dense untamed woods. She is the soul of the forest, its beating heart, the source of life energy that breaks down stone, devours ancient ruins, and fills dense thickets with mystery and fear. Aessina is the center of the web of life. The night elves have built shrines to her throughout Kalimdor, most notably the Shrine of Aessina in the midst of a forest glade in Ashenvale's heart and the Grove of Aessina located in Mount Hyjal. Aessina is Ysera's everlasting companion, both in the Emerald Dream and the physical world.

In World of Warcraft
At a point in Mount Hyjal questing, players will soon be sought by the wilderness spirit Aessina to assist in cleansing and healing the nearby forest, ultimately returning the land to its former splendor. Aessina herself appears there during the quest Quest:Aessina's Miracle in the form of a large wisp in a glowing light above the grove's moonwell.