The Baradin’s Warden Tabard and Hellscream’s Reach Tabard are really special. They can teleport to caster to the Baradin Base Camp on Tol Barad.
The Alliance version is the Baradin’s Warden Tabbard and the Horde version is the Hellscream’s Reach Tabard.
The Alliance version is brown with red edges and has an eagle in the middle with red eyes and looks really Fierce.
The Horde version is black with a red edges and icon in the middle of the tabard.
You can buy this tabard from either faction with 40 Tol Barad commendations.
Tol Barad commendations are awarded for completing daily quests in Tol Barad and for victories in TB battles.
Since the Baradin Basecamp has a portal to Stormwind and Orgrimmar the tabard is useful too use as a second Hearthstone. It does have a cooldown of 4 hours.