Black Swan Buffs and Kit Guide for Honkai Star Rail 4.0

You notice big changes after the latest Black Swan Buffs in Honkai Star Rail 4.0. Her Arcana stacks now carry over between waves, so you deal more damage faster. The lower energy cost for her Ultimate means you use it more often. You see her become a strong support and damage dealer.

Black Swan Buffs Overview

Buffs Summary

You see many changes in the Black Swan Buffs after the 4.0 update. These changes affect her Basic ATK, Skill, and Ultimate. You can check the table below to understand the main improvements:

Buff Description	Details
Wind DMG to one enemy	Deals Wind DMG equal to 100% of Black Swan's ATK to one enemy target.
Wind DMG to multiple enemies	Deals Wind DMG equal to 90% of Black Swan's ATK to one target and adjacent targets. Reduces their DEF by 20.8% for 3 turns.
Epiphany state	Inflicts "Epiphany" state on all enemies for 2 turns. Increases damage taken by 25%.
Arcana stacks	Increases maximum stacks of "Arcana" by 20. You have a 65% chance to inflict stacks on attacked targets.
Energy regeneration	Black Swan regenerates 8 Energy at the start of each turn or when enemies are defeated.
Changes to skills	Arcana stacks are halved when enemies do not have Epiphany. All attacks have a 65% chance to apply Arcana.
Eidolon changes	E2 increases Arcana stacks at battle start. E4 changes energy regen mechanics. E6 doubles Arcana application.

You notice that her Skill now deals Wind DMG to one target and nearby enemies. It also reduces their DEF for three turns. Her Ultimate now puts all enemies in the Epiphany state. This state makes them take 25% more damage. You can now stack more Arcana, and you have a better chance to apply it with every attack. You also get more energy each turn, so you can use her Ultimate more often.

Gameplay Impact

The Black Swan Buffs change how you play her in battle. You now deal more Wind DMG to both single and multiple targets. You lower enemy defenses, so your whole team can deal more damage. When you use her Ultimate, you put all enemies in Epiphany. This makes them take extra damage from every source. You can stack Arcana faster, and you do not lose as many stacks as before.

You play Black Swan as a Wind element character on the Nihility path. This means you focus on debuffing enemies and boosting your team's damage. The buffs let you support your team better. You can keep Arcana stacks between waves, so you start each fight strong. You also use your Ultimate more often because of the energy boost. Your team benefits from the extra damage and defense reduction.

Tip: Try to use her Ultimate when many enemies are on the field. You will get the most value from the Epiphany state and Arcana stacks.

The Black Swan Buffs make her a top choice for teams that need both damage and support. You can now build her to fit many team setups. You help your allies deal more damage, and you keep enemies weak with your debuffs.

Kit Breakdown

Basic ATK and Skill Changes

Black Swan’s Basic ATK is much better now. It deals Wind DMG equal to 60% of her ATK to one enemy. Each hit has a 65% chance to give one Arcana stack. This helps you build Arcana stacks fast, which means more damage.

Her Skill hits one enemy and nearby foes. You deal Wind DMG equal to 90% of her ATK. You also lower their DEF by 20.8% for three turns. This makes it easier for your team to beat tough enemies. You can get Arcana stacks faster because multi-DoT effects help you reach seven or more stacks in one or two turns. When you get this many stacks, you ignore 20% of enemy DEF. Your damage gets even better.

Here are some stats you should focus on for her kit:

Stat Benchmark	Description
EHR	You need 120% EHR for the best damage.
SPD	135 or 160 SPD lets you use stats well.
ATK	Try to get 3,000 ATK for top results.

Tip: Build Arcana stacks early in battle. Your damage will go up as you get more stacks.

Ultimate Updates

Black Swan’s Ultimate helps you control fights. The update lets her get Energy when DoT triggers happen. This means you can use her Ultimate more often and keep Arcana stacks going. You make a loop where her Ultimate is ready, and you keep stacks for long battles.

Her Ultimate now puts all enemies in the Epiphany state for two turns. Enemies take 25% more damage in this state. Your team does more damage and keeps pressure on foes. If you use her Ultimate with other DoT triggers, like Kafka’s Skill, you keep damage steady. Characters like Hysilens help by adding more DoT effects, making Black Swan stronger.

You get Energy from DoT triggers, so your Ultimate is ready.
You keep Arcana stacks longer, so your damage lasts.
You work well with other DoT characters for big impact.

Talent and Passive Adjustments

Black Swan’s talent and passive changes help her lower enemy resistance. You reduce enemy defense and add Wind Shear DoT. This helps your team do more damage, especially when you use Hysilens’ Ultimate, which likes different DoT types. Her talent also lets DoTs hit extra enemies, so you clear mobs faster and help your team more.

She works better with other characters now. Her debuffs and DoT effects help allies who use damage over time. You help your team break enemy defenses and win battles quickly.

Playstyle After Buffs

You play Black Swan in a new way after the Black Swan Buffs. You use Arcana stacks more often and keep them active easily. Enemies take more damage, and your team gets stronger from her debuffs. Arcana damage now ignores some enemy defense, so you hurt tanky foes more.

Here is a table that shows how the buffs change your playstyle:

Buff Description	Impact on Playstyle
You apply Arcana stacks more often	Your team does more damage and fits more setups
You keep Arcana stacks easier	Your damage stays high for longer
Enemies take more damage	Your team does better overall
Arcana damage ignores some enemy defense	You do more damage to tough enemies
Team-wide debuffs	You work better with other characters and don’t need only DoT teams

Note: You do not have to use only DoT teams. Black Swan now fits many team setups and helps your allies do more damage.

You focus on stacking Arcana, using her Ultimate at the right time, and helping your team with debuffs. Black Swan is now a flexible character who can help your team win in many ways.

Eidolons Guide

Eidolon Priority

You want to know which Eidolons to unlock first. The table below shows the best order for upgrades:

Eidolon	Priority	Reason
E2	⭐⭐⭐⭐	Fast Arcana stacking for early damage
E4	⭐⭐⭐	More energy for frequent Ultimates
E6	⭐⭐⭐⭐⭐	Maximum Arcana stacks and damage
E1/E3/E5	⭐⭐	Small boosts, not as important

You should focus on E2 and E6 if you want the biggest impact. E4 helps if you need more energy. The other Eidolons give small upgrades, so you can skip them if you want to save resources or use ManaBuy to efficiently top up for those crucial pulls.

Note: You do not need every Eidolon to make Black Swan strong. Pick the ones that fit your play style and team.

Builds and Teams

Relics and Light Cones

You can boost Black Swan’s performance by choosing the right relics and light cones. Read more about selecting the best artifact sets for DPS characters to maximize her potential.

Rank	Relic/Light Cone	Description
★★★★★	Revelry by the Sea	Increases DoT damage with high ATK.
★★★★☆	Pan-Cosmic Commercial Enterprise	Raises Effect Hit Rate and ATK.
★★★☆☆	Firmament Frontline Glamoth	Increases damage with high SPD.
★★★★★	Reforged Remembrance	Boosts DoT and stacks Prophet with Ultimate use.
★★★★☆	Eyes of the Prey	Increases DoT and Effect Hit Rate.
★★★★☆	Patience Is All You Need	Raises damage, SPD, and adds Erode debuff.
★★★★☆	Those Many Springs	Increases Effect Hit Rate and enemy damage taken.
★★★☆☆	Good Night and Sleep Well	Stacking damage boost per enemy debuff.
★★★☆☆	Before the Tutorial Mission Starts	Increases Effect Hit Rate and regenerates Energy.

You should focus on relics that raise DoT, Effect Hit Rate, and ATK. Light cones like Reforged Remembrance and Eyes of the Prey work well with her kit.

Team Synergy

You can build teams that use Black Swan’s buffs and debuffs for maximum effect. The table below shows strong team setups:

Team Type	Characters
Premium DoT Team	Black Swan, Kafka, Ruan Mei, Huohuo
F2P Team Comp	Black Swan, Serval, Sampo or Hook, Pela or Asta, Lynx

Kafka and Black Swan create a powerful DoT cycle. Learn more about the best DPS teams for Kafka to synergize with Black Swan's Arcana stacks.
Ruan Mei boosts your team’s damage, and Huohuo keeps everyone healthy.
In free-to-play teams, Sampo and Serval add more DoT, while Pela or Asta support with debuffs or buffs.

Build Tips

Maximize Black Swan’s DoT by stacking Effect Hit Rate and ATK.
Equip four pieces of Prisoner in Deep Confinement for attack and defense reduction.
Use Pan-Cosmic Commercial Enterprise for extra Effect Hit Rate and ATK.
Pair Black Swan with allies who apply different DoT types to build Arcana stacks quickly.
Advanced players can add Silver Wolf for defense shred or Acheron for extra damage. See where they rank in the latest HSR character tier list.
Keep your team balanced with a healer or shielder for tough fights.

Tip: You do not need only premium characters. Black Swan works well in both high-end and budget teams.

Performance Tips

Playstyle Advice

You want Black Swan to do her best after her buffs. Begin each fight by stacking Arcana fast. Use her Skill to hit many enemies and lower their defense. Wait for lots of enemies before using her Ultimate. This puts them in Epiphany and helps your team do more damage. Keep her energy up by using DoT effects often. Team her up with friends who use different DoT types. This helps you get Arcana stacks quicker.

Natalie Portman’s acting in "Black Swan" shows how to balance innocence and darkness. You can learn from how she changes her feelings and reacts to new things. In Honkai Star Rail, you switch between helping your team and doing damage. Use Black Swan’s debuffs to control fights and help your team. She can fit into many teams because she is flexible. You should pay attention to both your moves and your thinking, like Portman’s ballet scenes show with dance and mirrors.

Tip: Look for enemy weak spots and change your plan. Use Black Swan’s skills to keep enemies under pressure and help your team.

Mistakes to Avoid

You can dodge common mistakes by learning about risk and bias:

Not thinking about risk can make your team lose if things change fast.
Only using old plans or past info can make you miss new dangers.
If you do not build Arcana stacks early, you will do less damage.
Not being careful can make you easy to surprise by enemies.
Using just one DoT type or the same team every time stops Black Swan from being her best.

You should stay open and change how you play. Do not let old habits control your choices. Always try new ways to use Black Swan’s buffs and debuffs. If you are struggling to get the characters you need, consider using ManaBuy's top-up services for better value.

Black Swan’s job in the game changes with these buffs. The table below shows how new features help her do more damage and work better with her team:

Buff Type	Impact on Black Swan's Role
Synergy with Remembrance	Makes her more important with Memosprites in the meta
Punchline System	Lets you make new teams that focus on doing lots of damage
Arcana Stack Mechanics	Works well with Memosprites that use damage over time

Build your team to handle surprises. Use Black Swan’s skills to find new chances to win.

Test out different teams. Tell other players what works for you. Whether you are aiming for E6 Black Swan or just grabbing her light cone, ManaBuy is your trusted partner for Honkai Star Rail top-ups.

FAQ

How do you maximize Arcana stacks in battle?

You should use Black Swan’s Skill and Basic ATK often. Pair her with allies who trigger different DoT effects. This helps you reach max stacks quickly.