Bindings of the Windseeker

From WoWWiki

Thunderaan, Prince of Air, son of Al'Akir the Windlord was attacked by Ragnaros the Firelord, in an attempt to heighten the already impressive power the fire elemental held. Ragnaros succeeded, though Thunderaan's power could not be completely taken into his form. What remained of Thunderaan was placed in a talisman of elemental binding, which was broken into two pieces, then given to the Firelord's two lieutenants, Baron Geddon (left half), and Garr (right half). These two halves are known as the Bindings of the Windseeker. They are required for the line of quests leading up to the forging of [Thunderfury, Blessed Blade of the Windseeker].

The two halves

Bindings of the Windseeker Binds when picked up Unique Classes: Warrior, Paladin, Hunter, Rogue "The Right Half of Thunderaan's Eternal Prison"

Bindings of the Windseeker Binds when picked up Unique Classes: Warrior, Paladin, Hunter, Rogue "The Left Half of Thunderaan's Eternal Prison"

The right and left halves of the Bindings of the Windseeker. The approximate drop rate for each is 3%.