From Guild Wars Wiki
|Bonus||Armor +10 (while your pet is alive)|
A Beastmaster's Insignia is a ranger specific upgrade component that provides an armor bonus of 10 extra armor while your pet is alive. This bonus is not global and applies only to the armor piece equipped with the insignia.
|Armor +10 (while your pet is alive)|
- 1Priests of Balthazar will not have this insignia available for unlocking on accounts without Nightfall, but it can appear on runed armor salvage item drops in other campaigns.