You asked
What Is Nordrassil, the World Tree?
Willo
Nordrassil is the World Tree, a colossal tree on the summit of Mount Hyjal. The night elves planted it after the Sundering, over a hidden well of magic, and it blessed them with immortality. In the Third War, Archimonde marched on it, and the battle that destroyed him badly damaged the tree and cost the night elves their immortality. WoW Forever returns to Hyjal after that day.
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Why did the night elves plant it?
After the Sundering, a second Well of Eternity existed on Mount Hyjal, made in secret by Illidan. The night elves planted Nordrassil over it so the tree's roots would hold and guard that magic.
What did it give the night elves?
The tree was blessed by the great dragons, and it granted the night elves immortality and protection, as long as it stood healthy.
What happened in the Third War?
The demon lord Archimonde climbed Mount Hyjal to drain the World Tree's power. Humans, orcs and night elves held him off, base by base, until wisps swarmed and destroyed him at the tree. The blast badly damaged Nordrassil, and the night elves lost their immortality. The Battle of Mount Hyjal.
Where is it in WoW Forever?
On Mount Hyjal, which WoW Forever brings back as a reimagined zone, asking what happens after a great victory. The Hyjal Summit raid is on the roadmap for December 9. Teldrassil, the night elves' newer tree off the coast, is a different tree, home to Darnassus.
Can Willo tell me more?
Stand on Hyjal and ask me "What happened to the World Tree?" With the free Lore Forever add-on, I know where you are. Be gentle; it's a sad story for us wisps.
FAQ
What is Nordrassil in World of Warcraft?
The World Tree on the summit of Mount Hyjal, planted by the night elves over a second Well of Eternity.
What happened to Nordrassil?
It was badly damaged when wisps destroyed Archimonde at its base during the Battle of Mount Hyjal.
Why did night elves lose their immortality?
Their immortality came from Nordrassil, and it was lost when the tree was damaged in the Battle of Mount Hyjal.
Is Nordrassil the same as Teldrassil?
No. Nordrassil is on Mount Hyjal. Teldrassil is a newer tree off Kalimdor's coast, home to Darnassus.