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Recover the Branch of Nordrassil from the Firelands. Part of this quest happens in Mount Hyjal, Firelands and Borean Tundra.
"A bough from Nordrassil has been ripped from the tree and taken deep into the Firelands. There, a powerful ritual threatens to corrupt Nordrassil, consuming it in flame.You must find a way to interrupt the ritual and reclaim the World Tree's branch."
Upon completion of this quest you will gain: 7 200 experience and the title "Blessed Defender of Nordrassil".
Here you can buy Delegation Quest Boost for EU or US Servers.
You'll get guide for completing Delegation Quest Boost
Title: "Blessed Defender of Nordrassil"