Booster Harbinger
Rotation
Quickness rotation
Elixir of Promise
Elixir of Anguish
Harbinger Shroud
Dark Barrage
untilTainted Bolts
runs outHarbinger Shroud
Damage combo
Weeping Shots
Vile Blast
Harbinger Shroud
Dark Barrage
untilTainted Bolts
runs outHarbinger Shroud
Damage and condition mitigation
This celestial booster build is great offensive support made for open-world and is beginner friendly. The equipment above is designed to be played with no modifications from the exotic gear obtained by the level 80 booster. If one does not have the level 80 booster available to them then the equipment can be obtained through crafting or purchasing directly from the trading post. This build utilizes the elite specialization of harbinger. Specifically, this build will allow you to provide permanent Quickness
Fury
Might
Build Fundamentals
This build is able to maintain permanent Quickness
Fury
Regeneration
Might
Protection
Spectral Armor
Stability
Swiftness
Harbinger Shroud
Unique to Harbinger is the Blight mechanic Blight
Elixir of Promise
Elixir of Anguish
Blight
Your main weapons are going to be a pistol/warhorn. Using Weeping Shots
Vile Blast
Wail of Doom
Putrid Mark
Mark of Blood
Regeneration
Reaper's Mark
Since you gain all your offensive boons while in shroud you want to enter it off-cooldown. Use shroud Tainted Bolts
Dark Barrage
Tainted Bolts
Might
Reaper's Might
Voracious Arc
Vital Draw
Devouring Cut
You are also going to be using Summon Flesh Golem
Crowd Control
Alternatives
You can replace Spectral Armor
Well of Suffering
Summon Flesh Golem
Elixir of Ambition