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=== Sources of Damage Amplification ===

==== Additive Amplifiers ====

{| class="wikitable sortable"
|+List of heroes
!Hero
!Ability
!Tier
!Stat change
|-
| rowspan="1" |{{HeroIcon|Calico}} 
| rowspan="1" |{{AbilityIcon|Ava}} 
|3
|'''+{{#invoke:Abilities|get_ability_upgrade_prop|Ava|3|OutgoingDamagePercent}}%''' Ramping Damage Amp
|-
|{{HeroIcon|Ivy}}
|{{AbilityIcon|Air Drop}}
|0
|'''+20%''' Damage Amp on Ivy and carried ally
|-
| rowspan="2" |{{HeroIcon|Shiv}}
| rowspan="2" |{{AbilityIcon|Killing Blow}}
|0
|'''+{{#invoke:Abilities|get_ability_prop|Killing Blow|BuffDamage}}%''' Damage Amp
|-
|2
|'''+{{#invoke:Abilities|get_ability_upgrade_prop|Killing Blow|2|BuffDamage}}%''' Damage Amp
|-
|{{ItemIcon|Rebuttal}}
| -
| -
|'''+{{ItemData|Rebuttal|BonusDamagePercent}}''' Damage Amp
|}

==== Multiplicative Amplifiers ====

{| class="wikitable sortable"
|+List of heroes
!Hero
!Ability
!Tier
!Stat change
|-
| rowspan="2" |{{HeroIcon|Infernus}}
| rowspan="2" |{{AbilityIcon|Napalm}}
|0
|'''+{{#invoke:Abilities|get_ability_prop|Napalm|IncomingDamagePercentFromCaster}}%''' Damage Amp
|-
|3
|'''+{{#invoke:Abilities|get_ability_upgrade_prop|Napalm|3|IncomingDamagePercentFromCaster}}%''' Damage Amp
|-
|{{HeroIcon|McGinnis}}
|{{AbilityIcon|Spectral Wall}}
|1
|'''+{{#invoke:Abilities|get_ability_upgrade_prop|Spectral Wall|1|BonusDamagePercent}}%''' Damage Amp
|-
|{{HeroIcon|Mo & Krill}}
|{{AbilityIcon|Scorn}}
|3
|'''+{{#invoke:Abilities|get_ability_upgrade_prop|Scorn|3|DamageBonus}}%''' Damage Amp per Stack
|-
|{{HeroIcon|Victor}}
|{{AbilityIcon|Aura of Suffering}}
|3
|'''+{{#invoke:Abilities|get_ability_upgrade_prop|Aura of Suffering|3|IncomingDamagePercent}}%''' Damage Amp
|-
|{{HeroIcon|Bebop}}
|{{AbilityIcon|Hook}}
|1
|'''+{{#invoke:Abilities|get_ability_upgrade_prop|Grapple Arm|1|BulletAmp}}%''' Weapon Damage Amp against hooked targets
|-
| All Heroes
| [[Parry]]
| 0
| '''+25%''' Damage Amp (Parried target takes 25% increased damage from all sources)
|}

==== Instance Amplifiers ====

{| class="wikitable sortable"
|+List of heroes and items
!Hero / Item
!Ability
!Tier
!Stat change
|-
| rowspan="2" |{{HeroIcon|Drifter}}
| rowspan="2" |{{AbilityIcon|Bloodscent}}
|0
|'''+{{#invoke:Abilities|get_ability_prop|Bloodscent|AmpDamagePercent}}%''' Damage Amp on Isolated Heroes
|-
|3
|'''+{{#invoke:Abilities|get_ability_upgrade_prop|Bloodscent|3|AmpDamagePercent}}%''' Damage Amp on Isolated Heroes
|-
| rowspan="2" |{{HeroIcon|Lady Geist}}
| rowspan="2" |{{AbilityIcon|Malice}}
|0
|'''+{{#invoke:Abilities|get_ability_prop|Malice|VulnerabilityPerStack}}%''' Damage Amp per Stack
|-
|3
|'''+{{#invoke:Abilities|get_ability_upgrade_prop|Malice|3|VulnerabilityPerStack}}%''' Damage Amp per Stack
|-
| rowspan="2" |{{HeroIcon|Paradox}}
| rowspan="2" |{{AbilityIcon|Pulse Grenade}}
|0
|'''+{{#invoke:Abilities|get_ability_prop|Pulse Grenade|DamageAmplificationPerStack}}%''' Damage Amp per Stack
|-
|3
|'''+{{#invoke:Abilities|get_ability_upgrade_prop|Pulse Grenade|3|DamageAmplificationPerStack}}%''' Damage Amp per Stack
|-
| rowspan="2" |{{HeroIcon|Pocket}}
| rowspan="2" |{{AbilityIcon|Barrage}}
|0
|'''+{{#invoke:Abilities|get_ability_prop|Barrage|AmpPercentPerStack}}%''' Damage Amp per Stack
|-
|3
|'''+{{#invoke:Abilities|get_ability_upgrade_prop|Barrage|3|AmpPercentPerStack}}%''' Damage Amp per Stack
|-
| rowspan="2" |{{HeroIcon|Sinclair}}
| rowspan="2" |{{AbilityIcon|Rabbit Hex}}
|0
|'''+{{#invoke:Abilities|get_ability_prop|ability_magician_animalhexarea|DamageAmpPercentage}}%''' Damage Amp
|-
|3
|'''+{{#invoke:Abilities|get_ability_upgrade_prop|ability_magician_animalhexarea|3|DamageAmpPercentage}}%''' Damage Amp
|-
|{{ItemIcon|Escalating Exposure}}
| -
| -
| '''+{{ItemData|Escalating Exposure|MagicIncreasePerStack}}''' Spirit Damage Amp per Stack
|}

==== Unique Amplifiers ====
These amplifiers have unique mechanics that do not cleanly fit into the Additive, Multiplicative, or Instance categories.

{| class="wikitable sortable"
|+List of heroes
!Hero
!Ability
!Tier
!Stat change
!Notes
|-
| rowspan="2" |{{HeroIcon|Billy}}
| rowspan="2" |{{AbilityIcon|Blasted}}
|0
|'''+{{#invoke:Abilities|get_ability_prop|Blasted|BulletDamageAmp}}%''' Bullet Damage Amp against wrecked enemies
| rowspan="2" | Post‑mitigation [[True Damage|true damage]] amp. (See [[#Bugs, Quirks, and Exceptions|Bugs section]].)
|-
|2
|'''+{{#invoke:Abilities|get_ability_upgrade_prop|Blasted|2|BulletDamageAmp}}%''' Bullet Damage Amp against wrecked enemies
|-
| rowspan="2" |{{HeroIcon|Celeste}}
| rowspan="2" |{{AbilityIcon|Radiant Daggers}}
| 0
|'''+{{#invoke:Abilities|get_ability_prop|Radiant Daggers|MagicIncreasePerStack}}%''' Spirit Damage Amp per Stack
| rowspan="2" | Functions like a multiplicative amp with additive bugs. (See [[#Bugs, Quirks, and Exceptions|Bugs section]].)
|-
|3
|'''+{{#invoke:Abilities|get_ability_upgrade_prop|Radiant Daggers|3|MagicIncreasePerStack}}%''' Spirit Damage Amp per Stack
|}