Black Swan Skills, Traces & Eidolons

Honkai: Star Rail
Last Updated: Yesterday at 22:00

Introductions

Black Swan is a 5★ character with the Wind element who follows the Path of Nihility.
A Memokeeper of the Garden of Recollection. An indolent and mysterious soothsayer.
"Remembrance" of men are hers to heed, threads of fate are hers to tug.

Black Swan has gotten an overhaul with a Novaflare Update in the 4.0 Patch. These changes are approximately a 50-60% overall Team DPS boost for teams that were previously playing Black Swan. For more information on the changes in this Novaflare Update please check our dedicated section:

Black Swan's Strengths & Weaknesses

Strengths
Exceptional damage in all content.
Can be purely Skill Point Positive.
Very Good on Auto.
Extremely simple to Gear.
Excellent 4★ Light Cone Options.
Powerful E1 is good for Vertical Investment while not being mandatory.
Weaknesses
Best team is quite restrictive for Compositions needing Kafka and Hysilens.

Skills

Basic ATK
Percipience, Silent Dawn
Single Target
Lv. 6
Energy gain: 20
Break: Main: 10.0
Deals Wind DMG equal to 60.0% of Black Swan's ATK to one designated enemy target, with a 65.0% base chance of inflicting 1 stack of "Arcana" on the target. Additionally, when attacking a target that suffers Wind Shear, Bleed, Burn, or Shock, there is respectively a 65.0% base chance of inflicting 1 extra stack of "Arcana" on the target.
Skill
Decadence, False Twilight
Blast
Lv. 10
Energy gain: 30
Break: Main: 20.0 / AoE: 10.0
Deals Wind DMG equal to 90.0% of Black Swan's ATK to one designated enemy target and any adjacent targets. At the same time, there is a 100% base chance of inflicting 1 stack of "Arcana" on the target enemy and the adjacent targets. Additionally, there is a 100% base chance of reducing the DEF of the target enemy and the adjacent targets by 20.8%, lasting for 3 turn(s).
Ultimate
Bliss of Otherworld's Embrace
AoE | 120 energy cost
Lv. 10
Energy gain: 5
Break: Adjacent: 20.0
Inflicts Epiphany on all enemies for 2 turn(s).
While afflicted with Epiphany, enemies take 25.0% increased DMG in their turn. Additionally, if enemies are also inflicted with Arcana, they are also considered to be simultaneously afflicted with Wind Shear, Bleed, Burn, and Shock. After Arcana causes DMG at the start of each turn, its stacks are not reset. This non-reset effect of Arcana stacks can be triggered up to 1 time(s) for the duration of Epiphany. And the trigger count resets when Epiphany is applied again.
Deals Wind DMG equal to 120.0% of Black Swan's ATK to all enemies.
Talent
Loom of Fate's Caprice
Debuff
Lv. 10
Energy gain: -
Every time an enemy target receives DoT at the start of each turn, there is a 65.0% base chance for it to be inflicted with 1 stack of Arcana.
While afflicted with Arcana, enemy targets receive Wind DoT equal to 240.0% of Black Swan's ATK at the start of each turn. Each stack of Arcana increases this DMG multiplier by 12.0%. Then Arcana resets to 1 stack. Arcana can stack up to 50 times.
Only when Arcana causes DMG at the start of an enemy target's turn, Black Swan triggers additional effects based on the number of Arcana stacks inflicted on the target:
When there are 3 or more Arcana stacks, deals Wind DoT equal to 180.0% of Black Swan's ATK to adjacent targets, with a 65.0% base chance of inflicting 1 stack of Arcana on adjacent targets.
When there are 7 or more Arcana stacks, enables the current DoT dealt this time to ignore 20.0% of the target's and adjacent targets' DEF.
Technique
From Façade to Vérité
Enhance
Energy gain: -
After this Technique is used, there is a 150.0% base chance for each enemy to be inflicted with 1 stack of Arcana at the start of the next battle. For each successful application of Arcana on a target, inflicts another stack of Arcana on the same target. This process repeats until Arcana fails to be inflicted on this target. For each successive application of Arcana on a target, its base chance of success is equal to 50.0% of the base chance of the previous successful infliction of Arcana on that target.
Basic ATK
Percipience, Silent Dawn
Single Target
Lv. 6
Energy gain: 20
Break: Main: 10.0
Deals Wind DMG equal to 100% of Black Swan's ATK to one enemy.
Skill
Decadence, False Twilight
Blast
Lv. 10
Energy gain: 30
Break: Main: 20.0 / AoE: 10.0
Deals Wind DMG equal to 90.0% of Black Swan's ATK to one designated enemy and any adjacent targets. At the same time, there is a 100% base chance of reducing the DEF of the enemy target and the adjacent targets by 20.8%, lasting for 3 turn(s).
Ultimate
Bliss of Otherworld's Embrace
AoE | 120 energy cost
Lv. 10
Energy gain: 5
Break: Adjacent: 20.0
Inflicts "Epiphany" state on all enemies for 2 turn(s). Then deals Wind DMG to all enemies equal to 120.0% of Black Swan's ATK.
While in the "Epiphany" state, enemy targets take 25.0% increased DMG. For every 1 stack of "Arcana inflicted," there is a 50.0% fixed chance to additionally increase the number of "Arcana" stacked this time by 1. And "Arcana" stacks won't be halved after dealing DMG at the start of the turn.
Talent
Loom of Fate's Caprice
Debuff
Lv. 10
Energy gain: -
Every time an enemy target receives 1 instance of DoT, there is a 65.0% base chance for it to be inflicted with 1 stack of "Arcana".
While an enemy target is in the "Arcana" state, they are also considered to be simultaneously afflicted with Wind Shear, Bleed, Burn, and Shock. The target receives Wind DoT equal to 240.0% of Black Swan's ATK at the start of each turn, after which the number of stacks is halved. Each stack of "Arcana" increases this DMG multiplier by 12.0%. "Arcana" can stack 50 times, and can continue to stack beyond this limit, with the excess stacks removed after dealing DMG.
DMG from "Arcana" ignores 20.0% of the target's DEF. Only when "Arcana" deals DMG at the start of the enemy target's turn, adjacent targets take 1 additional instance of Wind DoT equal to 180.0% of Black Swan's ATK.
Technique
From Façade to Vérité
Enhance
Energy gain: -
After Technique is used, there is a 150.0% base chance for each enemy to be inflicted with 1 stack of "Arcana" at the start of the next battle. For each successful application of "Arcana" on a target, inflicts another stack of "Arcana" on the same target. This process repeats until "Arcana" fails to be inflicted on this target. For each successive application of "Arcana" on a target, its base chance of success is equal to 50.0% of the base chance of the previous successful infliction of "Arcana" on that target.

Major Traces

Viscera's Disquiet
A2
Major trace
After using Skill to attack one designated enemy that has Wind Shear, Bleed, Burn, or Shock, each of these debuffs respectively has a 65.0% base chance of inflicting 1 extra stack of Arcana.
Goblet's Dredges
A4
Major trace
When an enemy target enters combat, there is a 65.0% base chance for it to be inflicted with 1 stack of Arcana.
Every time an enemy target receives 1 instance of DoT during a single attack by an ally, there is a 65.0% base chance for the target to be inflicted with 1 stack of Arcana. The maximum number of stacks that can be inflicted during 1 single attack is 3.
Candleflame's Portent
A6
Major trace
Increases this unit's DMG by an amount equal to 60.0% of Effect Hit Rate, up to a maximum DMG increase of 72.0%.
Viscera's Disquiet
A2
Major trace
When an enemy target gets attacked by Black Swan, there is a 65.0% base chance of inflicting 5 stack(s) of "Arcana" on them.
Goblet's Dredges
A4
Major trace
When an enemy targets enters combat, there is a 65.0% base chance for it to be inflicted with 1 stack of "Arcana," and a 100% base chance to be inflicted with the DEF reduction effect from the Skill, which lasts for 3 turn(s).
After using Basic ATK or Ultimate, there is also a 100% base chance to inflict the DEF reduction effect from the Skill on the hit enemy targets, which lasts for 3 turn(s).
Candleflame's Portent
A6
Major trace
Increases the DMG dealt by all allies by an amount equal to 60.0% of Black Swan's Effect Hit Rate, up to a maximum DMG increase of 72.0%.

Minor Traces

ATK
+28.0%
Wind DMG Boost
+14.4%
Effect Hit Rate
+10.0%
ATK
+28.0%
Wind DMG Boost
+14.4%
Effect Hit Rate
+10.0%

Eidolons

E1
Seven Pillars of Wisdom
Eidolon 1
While Black Swan is active in combat, enemies afflicted with Wind Shear, Bleed, Burn, or Shock will have their corresponding Wind, Physical, Fire, or Lightning RES respectively reduced by 25.0%.
E2
Weep Not For Me, My Lamb
Eidolon 2
When an enemy target afflicted with "Arcana" is defeated, there is a 100% base chance of inflicting 6 stack(s) of "Arcana" on adjacent targets.
E3
As Above, So Below
Eidolon 3
Skill Lv. +2, up to a maximum of Lv. 15.
Talent Lv. +2, up to a maximum of Lv. 15.
E4
In Tears We Gift
Eidolon 4
While in the Epiphany state, enemy targets have their Effect RES reduced by 10.0% and Black Swan regenerates 8 Energy at the start of these targets' turns or when they are defeated. This Energy Regeneration effect can only trigger up to 1 time while Epiphany lasts. The trigger count is reset when Epiphany is applied again.
E5
Linnutee Flyway
Eidolon 5
Ultimate Lv. +2, up to a maximum of Lv. 15.
Basic ATK Lv. +1, up to a maximum of Lv. 10.
E6
Pantheon Merciful, Masses Pitiful
Eidolon 6
When an enemy target is attacked by Black Swan's teammates, Black Swan has a 65.0% base chance of inflicting 1 stack of "Arcana" on the target.
Every time Black Swan inflicts "Arcana" on an enemy target, there is a 50.0% fixed chance to additionally increase the number of "Arcana" stacked this time by 1.
E1
Seven Pillars of Wisdom
Eidolon 1
While Black Swan is active in combat, enemies afflicted with Wind Shear, Bleed, Burn, or Shock will have their corresponding Wind, Physical, Fire, or Lightning RES respectively reduced by 25.0%.
E2
Weep Not For Me, My Lamb
Eidolon 2
When enemy targets enter combat, there is a 100% base chance to inflict 30 stack(s) of "Arcana" on them.
E3
As Above, So Below
Eidolon 3
Skill Lv. +2, up to a maximum of Lv. 15.
Talent Lv. +2, up to a maximum of Lv. 15.
E4
In Tears We Gift
Eidolon 4
While in the "Epiphany" state, enemy targets take 20.0% increased DMG. And at the start of every turn or when they get defeated, regenerates 8 Energy for Black Swan.
E5
Linnutee Flyway
Eidolon 5
Ultimate Lv. +2, up to a maximum of Lv. 15.
Basic ATK Lv. +1, up to a maximum of Lv. 10.
E6
Pantheon Merciful, Masses Pitiful
Eidolon 6
The upper limit of stackable "Arcana" increases by 30.
When an enemy target gets attacked by Black Swan's teammates, Black Swan has a 65.0% base chance of inflicting 1 stack of "Arcana" on the target.
For every 1 stack of "Arcana" Black Swan inflicts on an enemy target, additionally increases the number of "Arcana" stacked this time by 1.

Stats and Ascension Materials

Lv. 1
Base Stats
HP
148
ATK
90
DEF
66
SPD
102
Ascension Materials
Credits
308000
Extinguished Core
15
Glimmering Core
15
Ascendant Debris
65
Squirming Core
15

Black Swan Voice Actors

EN
Arryn Zech
JP
Nabatame Hitomi
CN
Yang Menglu
KR
Kim Ha-young
Saeldur
Staff Author
Follow Saeldur

This guide has been written by Saeldur, an Evoker Theorycrafter since the class came out in Dragonflight. He is an accomplished high end player with top parses on multiple specs, an Expert on the Evoker Discord, and has a deep understanding of many other classes, and how they interact with Augmentation Evoker.

1.

Changelog

  • 12 Feb. 2026: Page and Skills page updated for Novaflare Update.
  • 20 Jun. 2025: Page and Skills for Black Swan added.
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