Reverse damage reduction

Anti-damage reduction (ADR), also known as reverse damage reduction (RDR) (no official name), refers to effects that apply a negative amount of damage reduction, causing the affected demon to take more damage. This is not the same as normal damage boosts.

Mechanics

Anti-damage reduction is applied at the end of the damage formula, where it is additive to normal damage reduction. For more details, see Damage Formula.

• Due to this, anti-damage reduction can directly counteract normal damage reduction.
  • For example: if an enemy has a passive that grants -80% Elec damage taken, and your party has Botis (applies +40% damage taken), then that partially cancels the enemy's passive (-80 + 40). This results in a total of -40% damage taken instead.
• Normal damage boosts (such as Elec Amp) cannot counteract damage reduction in any way.

Due to how the math works out, anti-damage reduction will result in higher damage output than an equivalent % of normal damage boosters.

• For example: Suppose Elohim is in a party with Mithras. The 40% anti-damage reduction from Mithras's Covenant Bless results in more damage output than Elohim equipping 40% worth of damage boosts (such as Fire Amp (25%) + Fire Boost (15%)).

Skills that apply anti-damage reduction are usually phrased as affecting the damage the enemy takes/receives, rather than the amount of damage your party deals. For effects that increase the damage your party deals, see damage boost.

Appliers

Skills that apply anti-damage reduction to enemies

Type	Name	MP Cost	Target	Amount	Conditional?	Skill Points	Exclusive?
Passive	Crawling Chaos	Passive	All Targets	25% Magic	Enemies with Gloom	-	Nyarlathotep
Passive	Covenant Bless	Passive	All Targets	40% Fire/Light	-	-	Mithras
Passive	Dark Eclipse Voltage	Passive	All Targets	40% Elec	-	-	Botis
Passive	Hedonistic Reaper	Passive	All Targets	25% Physical	Enemies with Gloom	-	Guedhe
Passive	Tempestuous Malice	Passive	All Targets	30% All	Enemies with an Ailment	-	Tiamat A
Passive	Lady of the Lake	Passive	All Targets	40% Ice	-	-	Vivian
Passive	War Goddess	Passive	All Targets	20% All	Enemies with Spirit Chains (Corrosion)	-	Morrighan
Passive	Peerless Beauty	Passive	All Targets	30% All	Enemies with an Ailment	-	Cleopatra
Passive	The Wings of Darkness	Passive	All Targets	20% All	Enemies with Decay	-	Femto
Passive	Pure Maiden	Passive	All Targets	20% Critical Hits		-	Artemis
Passive	Immortal Sea Serpent	Passive	All Targets	(5 * X)% All	Enemies with Spirit Chains (5% per type)	-	Hydra
Passive	Empress of Thunder	Passive	All Targets	25% All	Enemies with Bulwark	-	Arshes Nei
Passive	Proof of Determination	Passive	All Targets	40% All	If All Allies have Zenith	-	Fionn mac Cumhaill

Demon Panels that apply anti-damage reduction to enemies

Demon	Panel #	Effect
Belial	Panel 3	+40% to Phys and Fire damage. While the one with this skill is alive, all enemies will receive the following effect: +30% to damage received while Cursed.
Cleopatra	Panel 2	While the one with this skill is alive, all enemies will receive the following effect: +15% to damage received while inflicted with Spirit Chains (Corrosion).
Inanna	Panel 2	+500 to Mag DEF. While the one with this skill is alive, all enemies will receive the following effect: +15% to Magic damage taken.
Kali A	Panel 2	While the one with this skill is alive, all Cursed enemies will receive the following effect: -50% to Healing skill effectiveness, +15% to damage received.
Masakado B	Panel 2	While the one with this skill is alive, all enemies will receive the following effect: +15% to damage received while inflicted with Spirit Chains of Suppression.
Old Ones	Panel 2	While the one with this skill is alive, all enemies will receive the following effect: +20% to damage received while inflicted with Gloom.

Skills that apply anti-damage reduction to self

Type	Name	MP Cost	Target	Amount	Skill Points	Exclusive?
Passive	Berserker (Skill)	Passive	Self	20% All	18	-
Passive	Holy Immunity	Passive	Self	60% Fire	-	Ainz