Frostwolf Insignia
Quest reward from The Eye of Command. This item can be purchased within the Alterac Valley battleground from during the preparation stage.
The 
Frostwolf Insignia is a free toy purchased from Voggah Deathgrip inside the Alterac Valley battleground during the preparation stage before the match begins.
Guide awaiting review
Enter Alterac Valley Fresh
Queue for the Alterac Valley battleground and wait to be placed into a freshly started match. Voggah Deathgrip is only present during the preparation stage before the gates open — once the battleground starts, he disappears.
Locate Voggah Deathgrip
During the preparation stage, find Voggah Deathgrip standing near the gate on the left side of the Horde starting area. If you have trouble targeting him, try using /tar vogg in chat.
Purchase the Insignia
Buy the Frostwolf Insignia from Voggah Deathgrip at no cost. Purchasing it will also automatically unlock the Alliance equivalent, 
Stormpike Insignia, which is sold by Prospector Stonehewer on the Alliance side.
Tips
This item cannot be obtained while queued as a mercenary, as the NPC is faction-restricted to characters playing as Horde.
