Harbingers are a type of immortal monsters. Harbingers summon enemies to fight the player while empowering them in different ways, and they can only be harmed by killing their minions. Harbingers can drop currency shards, for both ones seen in Wraeclast as well as their own currency.
Harbingers are invincible enemies that summon waves of enemies and summon new ones as they are defeated. Harbingers can also indirectly attack by empowering their minions, such as creating a Righteous Fire aura around a monster or have all monsters use
Flame Dash. At higher levels, Harbingers can also summon Obelisks that can attack or power up their monsters.
PATH of EXILE 3.0: Harbinger Unique Map “ The Beachhead, Harbinger Map” First Run (T10)
The Heist Flashback Event is all about the ruckus. In each area you’ll contest with several popular mods from past leagues in a harrowing mad-dash for power and glory. Alongside Heist, each area in Wraeclast will have a random selection of three of the following mods present. These mods will change every hour, on the hour.
This is a Heist event which means that alongside the chaos of past mods, you’ll have access to Heist’s content in its current form. This is a separate event to the Heist League which means you’ll need to make a fresh character in order to participate. You can, however, continue to complete your Heist challenges in the Heist Flashback Event.
Harbingers don’t drop regular items, but only currency shards. These items can directly drop from Harbingers: