Insignia of the Horde

Insignia of the Horde is a quality PvP trinket that removes all movement impairing effects but does not prevent them from being reapplied. Usable even if the effect would normally prevent trinket use.

Source
This item is a quest reward from Hellfire Fortifications (Horde).

It appears to not be rewarded to players who already have an equivalent Insignia trinket.

Upgrade
There is an upgraded version, the Medallion of the Horde (rare), which is available at level 70, has only a 2-minute cooldown, and has a Resilience bonus.