Effect RES

Effect RES
Type	Combat Stats

Effect RES is one of the stats in Honkai: Star Rail, used by both characters and enemies. It decreases the probability of an attack inflicting a debuff on a target, alongside Debuff RES.

$\begin{align} \text{Real Chance} ={} & \text{Base Chance} \\ & \times (1 + \text{Effect Hit Rate}_\text{Attacker}) \\ & \times (1 - \text{Effect RES}_\text{Target}) \\ & \times (1 - \text{Debuff RES}_\text{Target}) \end{align}$

Enemy Effect RES

Different enemies have varying amounts of Base Effect RES. Additionally, enemies' Effect RES will increase by 0.4% per level from Level 51 to Level 75, up to 10%.

Abilities

Toggle Descriptions
2 abilities increase Effect RES of characters:

Character	Name	Description	Type	Tag
Firefly Firefly	Chrysalid Pyronexus Chrysalid Pyronexus	The lower the HP, the less DMG received. When HP is 20% or lower, the DMG Reduction reaches its maximum effect, reducing up to 20%—44%. During the Complete Combustion, the DMG Reduction remains at its maximum effect, and the Effect RES increases by 10%—34%. If Energy is lower than 50% when the battle starts, regenerates Energy to 50%. Once Energy is regenerated to its maximum, dispels all debuffs on this unit.	Talent	Defense
Aventurine Aventurine	Shot Loaded Right Shot Loaded Right	For any single ally with Fortified Wager, their Effect RES increases by 25%—55%, and when they get attacked, Aventurine gains 1 point of Blind Bet. When Aventurine has Fortified Wager, he can resist Crowd Control debuffs. This effect can trigger again after 2 turn(s). Aventurine additionally gains 1 point(s) of Blind Bet after getting attacked. Upon reaching 7 points of Blind Bet, Aventurine consumes the 7 points to launch a 7-hit follow-up attack, with each hit dealing Imaginary DMG equal to 12.5%—27.5% of Aventurine's DEF to a single random enemy. Blind Bet is capped at 10 points.	Talent	Bounce

Bonus Abilities

Toggle Descriptions
2 Bonus Abilities increase Effect RES of characters:

Character	Name	Description	Ascension Requirement
Jingliu Jingliu	Deathrealm Deathrealm	While in the Spectral Transmigration state, increases Effect RES by 35%.	2
Yanqing Yanqing	Frost Favors the Brave Frost Favors the Brave	When Soulsteel Sync is active, Effect RES increases by 20%.	4

Toggle Descriptions
1 Bonus Abilities reduces Effect RES of enemies:

Character	Name	Description	Ascension Requirement
Dr. Ratio Dr. Ratio	Inference Inference	When Skill is used to attack an enemy target, there is a 100% base chance to reduce the attacked target's Effect RES by 10% for 2 turn(s).	4

Eidolons

Toggle Descriptions
7 Eidolons increase Effect RES of characters:

Character	Name	Description	Level
Gallagher Gallagher	Salty Dog Salty Dog	When Gallagher enters the battle, regenerates 20 Energy and increases Effect RES by 50%.	1
Gallagher Gallagher	Lion's Tail Lion's Tail	When using the Skill, removes 1 debuff(s) from a target ally. At the same time, increases their Effect RES by 30%, lasting for 2 turn(s).	2
Yunli Yunli	Artisan's Ironsong Artisan's Ironsong	After launching "Intuit: Slash" or "Intuit: Cull," increases this unit's Effect RES by 50%, lasting for 1 turn(s).	4
Gepard Gepard	Faith Moves Mountains Faith Moves Mountains	When Gepard is in battle, all allies' Effect RES increases by 20%.	4
Robin Robin	Raindrop Key Raindrop Key	When using the Ultimate, dispels Crowd Control debuffs from all allies. While Robin is in the Concerto state, increases the Effect RES of all allies by 50%.	4
Firefly Firefly	Upon Lighted Fyrefly, I Soon Gaze Upon Lighted Fyrefly, I Soon Gaze	While in Complete Combustion, increases SAM's Effect RES by 50%.	4
Lynx Lynx	Dawn of Explorers' Chart Dawn of Explorers' Chart	Additionally boosts the Max HP increasing effect of "Survival Response" by an amount equal to 6% of Lynx's Max HP and increases Effect RES by 30%.	6

Toggle Descriptions
3 Eidolons reduce Effect RES of enemies:

Character	Name	Description	Level
Guinaifen Guinaifen	Slurping Noodles During Handstand Slurping Noodles During Handstand	When Skill is used, there is a 100% base chance to reduce the attacked target enemy's Effect RES by 10% for 2 turn(s).	1
Silver Wolf Silver Wolf	Zombie Network Zombie Network	When an enemy enters battle, reduces their Effect RES by 20%.	2
Black Swan Black Swan	In Tears We Gift In Tears We Gift	While in the Epiphany state, enemy targets have their Effect RES reduced by 10%. And at the start of their turn or when they get defeated, Black Swan regenerates 8 Energy. This Energy Regeneration effect can only trigger up to 1 time while Epiphany lasts. And this trigger count resets after the enemy gets inflicted with Epiphany again.	4

Relic Sets

Toggle Set Bonuses
1 Relic Sets increases Effect RES of characters:

Icon	Set	Pieces	Bonuses
	Broken Keel		2 Piece: Increases the wearer's Effect RES by 10%. When the wearer's Effect RES is at 30% or higher, all allies' CRIT DMG increases by 10%.

Light Cones

Toggle Columns:
RarityPathStatsPassives
3 Light Cones increase Effect RES of characters:

Icon & Name	Rarity	Path	Stats	Passive
Destiny's Threads Forewoven		Preservation	HP: 43~952 ATK: 16~370 DEF: 21~463	Insight Increases the wearer's Effect RES by 12~20%. For every 100 of DEF the wearer has, increases the wearer's DMG dealt by 0.8~1.2%, up to a maximum DMG increase of 32~48%.
Perfect Timing		Abundance	HP: 43~952 ATK: 19~423 DEF: 18~396	Refraction of Sightline Increases the wearer's Effect RES by 16~32% and increases Outgoing Healing by an amount that is equal to 33~45% of Effect RES. Outgoing Healing can be increased this way by up to 15~27%.
Texture of Memories		Preservation	HP: 48~1,058 ATK: 19~423 DEF: 24~529	Treasure Increases the wearer's Effect RES by 8~16%. If the wearer is attacked and has no Shield, they gain a Shield equal to 16~32% of their Max HP for 2 turn(s). This effect can only be triggered once every 3 turn(s). If the wearer has a Shield when attacked, the DMG they receive decreases by 12~24%.

Enemies

1 Enemy can reduce the Effect RES of characters:

Enemy	Tier	Damage	Weakness
Dreamjolt Troupe's Spring Loader	Normal

Consumables

There are 5 consumables:

Name	Effect	Type	Source	Recipe
Arma Correctional Body Wash	Upon use, increases Effect RES of all allies by 20% for the next battle.	Defense Consumables	Sold by The Arma Correctional Group
Disposable Shield	When used, increase DEF of all allies by 15%, and Effect RES by 10% for the next battle.	Defense Consumables	Omni-Synthesizer	Available by default
Jade Marrow Diffusion	Upon use, increases Effect RES of all allies by 30% for the next battle.	Defense Consumables	Omni-Synthesizer	Sold by The Insides of Mr. Huo's Coat
Longevity Pill of Cruelty	Upon use, increases Max HP of all allies by 20% and Effect RES by 6% in the next 3 battles.	Defense Consumables	Omni-Synthesizer	Sold by Jeweler's Pagoda
The Moment Before Death	Upon use, all allies take 20% less DMG and increase their Effect RES by 6% for the next battle.	Defense Consumables	Omni-Synthesizer	Chabro ( Happy)

Other Languages

Language	Official Name
English	Effect RES
Chinese (Simplified)	效果抵抗
Chinese (Traditional)	效果抗性
Japanese	効果抵抗
Korean	효과 저항
Spanish	RES a efecto
French	RÉS aux effets
Russian	Сопротивление эффектам
Thai	ต้านทานสถานะ
Vietnamese	Kháng Hiệu Ứng
German	Effekt-WDS
Indonesian	Effect RES
Portuguese	RES a Efeito

Change History

Released in Version 1.0

[Edit History]

Version 1.1

• Level scaling of Effect RES for enemies was changed:
  • Old: Increases by 0.5% per level from Level 51 to Level 100; Maximum 25%.
  • New: Increases by 0.4% per level from Level 51 to Level 75; No further increase after Level 75; Maximum 10%.

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Version 1.0

• Effect RES was released.