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# Herald of Agony
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**Herald of Agony** is a herald skill gem. When activated it reserves mana and grants a buff that gives a chance to inflict poison on enemies. Whenever the user poisons an enemy, it grants Virulence and summons an Agony Crawler minion, which becomes stronger with more stacks of Virulence.

##  Skill functions and interactions

Virulence buff cannot go above 40 stacks.

Agony Crawler Minion has an implicit 40% Physical to Chaos damage conversion.

Minion damage can be increased through many methods, such as:

-  Gem level boosts, such as [[The Coming Calamity]], [[Cold Iron Point]], and [[Empower Support]].
- The Ring [[Circle of Nostalgia]] has modifiers that directly buff the skill
- Auras like [[Hatred]] supported by [[Generosity]].
- [[Frenzy charges]] also apply to minions at a significant bonus. These can be granted to minions through the [[Victario's Charity]] shield, [[Poacher's Mark]], or an item providing it [[Gluttony]].
- Support gems such as: [[Minion Damage]], [[Point Blank]], and [[Vile Toxins]] also offer a considerable boost to minion damage. The Crawler is also immune to any form of damage and cannot die, making [[Damage on Full Life]] a great option.
- Temporary effects such as [[Flesh Offering]], [[Spirit Offering]], [[Vaal Haste]], and [[Vaal Lightning Trap]]
 can also be taken advantage of.
- Debuffs such as Intimidate from [[Belt of the Deceiver]] also increase minion damage.
- Curses like [[Sniper's Mark]] also work.

For faster clear speed consider supports such as [[Pierce]], [[Greater Multiple Projectiles]], [[Faster Attacks]], and [[Minion Speed]]. There is also an Uber Labyrinth enchantment that grants 2 additional projectiles to your Minion Crawler: Summoned Agony Crawler fires 2 additional Projectiles

Consider using [[Convocation]] to quickly teleport the Crawler to your location. This is useful when dealing with Proximity Shield mobs.