Honkai Star Rail Guide

BlackSwan Build Guide

S Tier

BlackSwan Stats at Max Lv

BlackSwan Overview

BlackSwan is a Memokeeper residing in the Garden of Recollection. He is an enigmatic and laid-back seer. With great patience, he listens to the “memories” of others, allowing him to grasp the interconnected threads of destiny and manipulate them to his advantage.

BlackSwan Lv
Ascension Materials

Level: 0

BlackSwan Skills

Midnight Tumult

BlackSwan Normal Attack

Single Target
Energy Regeneration: 20
Weakness Break: 30

Level: 1

Deals Wind DMG equal to 30% of Black Swan’s ATK on a single enemy unit, with a 50% base chance of inflicting 1 stack of Arcana on the attacked enemy unit, and should a target have Wind Shear, Bleed, Burn, or Shock applied to them, each will have a 50% base chance of additionally applying 1 stack of Arcana on the enemy.

Decadence, False Twilight

BlackSwan Skill

Blast
Energy Generation: 30
Weakness Break: 60 / 30

Level: 1

Deals Wind DMG equal to 45% of Black Swan’s ATK to a single enemy and any adjacent targets, with a 100% base chance to inflict 1 stack of Arcana to the attacked enemies and a 100% base chance to lower the attacked enemies’ DEF by 14.8%, lasting for 3 turns.

Bliss of Otherworld’s Embrace

BlackSwan Ultimate

AoE ATK
Energy Cost: 130
Energy Generation: 5
Weakness Break: 60

Level: 1

Inflicts Epiphany on all enemies for 2 turn(s).
Enemies affected by Epiphany take 15% more DMG in their turn, and their Sacrament effect is regarded as Wind Shear, Bleed, Burn, and Shock effects. In addition, when their Sacrament effect is triggered at the beginning of the next turn, the Sacrament stacks are not reset. The stack non-reset effect can be triggered up to 1 time(s) in Epiphany’s duration, and its charges are replenished when Epiphany is applied again.
Deals Wind DMG equal to 72% of Black Swan’s ATK to all enemies.

BlackSwan Talents

Loom of Fate’s Caprice

BlackSwan Talent

Impair

Level: 1

Every time an enemy target receives DoT at the start of each turn, there is a 50% base chance for it to be inflicted with Arcana.
While afflicted with Arcana, enemy targets receive Wind DoT equal to 4.8% of Black Swan’s ATK at the start of each turn. Each stack of Arcanaincreases this DoT DMG multiplier by 72%. Then Arcanaresets 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 72% of Black Swan’s ATK to adjacent targets, with a 50% 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% of the target’s and adjacent targets’ DEF.

BlackSwan Technique

Loom of Fate’s Caprice
BlackSwan Technique

After this Technique is used, there is a 150% 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% of the base chance of the previous successful infliction of Arcana on that target.

BlackSwan Traces

Viscera’s Disquiet

First Tier

After using the Skill to hit an enemy that has Wind Shear, Bleed, Burn, or Shock, each of these debuffs respectively has a 65% base chance of inflicting 1 extra stack of Arcana.

Second Tier (Ascension 2)

Thrid Tier (Ascension 3)

Fourth Tier (Ascension 3)

Goblet’s Dredges

First Tier

Every time an enemy target receives DoT during the single attack of allies, there is a 65% base chance for it to be inflicted with 1 stack of Sacrament, stacking up to 3 time(s) during 1 single attack.

Second Tier (Ascension 4)

Thrid Tier (Ascension 5)

Fourth Tier (Ascension 5)

Candleflame’s Portent

First Tier

Increases DMG dealt by this unit by an amount equal to 60% of their Effect Hit Rate, up to a maximum DMG increase of 72%.

Second Tier (Ascension 6)

Thrid Tier (Lv. 75)

Other Traces

First Tier (Lv. 1)

Second Tier (Lv 80)

BlackSwan Max Trace Lv Ascension Materials

BlackSwan Eidolon

Seven Pillars of Wisdom

BlackSwan Eidolon Level 1

While Black Swan is active in battle, enemies afflicted with Wind Shear, Bleed, Burn, or Shock will have their corresponding Wind, Physical, Fire, or Lightning RES respectively reduced by 25%.

Weep Not For Me, My Lamb

BlackSwan Eidolon Level 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.

As Above, So Below

BlackSwan Eidolon Level 3

Skill Lv. +2, up to a maximum of Lv. 15.
Basic ATK Lv. +1, up to a maximum of Lv. 10.

In Tears We Gift

BlackSwan Eidolon Level 4

While in the Epiphany state, enemy targets’ Effect RES reduces 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.

Linnutee Flyway

BlackSwan Eidolon Level 5

Ultimate Lv. +2, up to a maximum of Lv. 15.
Talent Lv. +2, up to a maximum of Lv. 15.

Pantheon Merciful, Masses Pitiful

BlackSwan Eidolon Level 6

When enemy targets get attacked by Black Swan’s allies, Black Swan has a 65% base chance of inflicting 1 stack of Arcana on the target.

Each time Black Swan inflicts Arcana on an enemy target, there is a 50% fixed chance to additionally increase the number of Arcana stacks afflicted this time by 1.