Thunderaan the Windseeker (quest) - Wowpedia - Your wiki guide to the World of Warcraft
Thunderfury, Blessed Blade of the Windseeker can be completed and equipped by any class that can equip swords. : r/classicwow
Thunderaan the Windseeker - Quest - World of Warcraft
Bindings of the Windseeker - Item - World of Warcraft
At your request: So you want a [Thunderfury, Blessed Blade of the Windseeker]? tl;dr It's gonna take some time. [interactive version in comments] : r/classicwow