From Guild Wars Wiki
|Bonus||Armor +10 (while holding an item)|
A Herald's Insignia is an upgrade component that provides an armor bonus of 10 extra armor rating while you are holding a bundle. This bonus is not global and applies only to the armor piece equipped with the insignia.
|Armor +10 (while holding an item)|
- This insignia can find use for a flag runner.
- Ritualist primaries or secondaries using item spells might also consider using this insignia.
- Synergy with Protective Was Kaolai to get the maximum (+10) armor; giving ritualists an extra +20 armor rating.