Phainon Best Builds, Teams & Relics

Honkai: Star Rail
Last Updated: on Jun 30, 2025 at 22:00

Introductions

Phainon is a 5★ Physical Character following the Path of Destruction. Phainon is a Main DPS that builds towards a transformative Ultimate with stunning visuals and impressive burst damage.
Our Phainon Build Guide will show you the best Lightcones, Relics and Team Compositions build the best Phainon you can.

Phainon's Best Light Cone

The percentage numbers listed showcase the relative DPS increase when you take into account both the Lightcone Effect(s) and Cones Base Stats.

Thus Burns the Dawn (S1)
131.9%
The wearer's base SPD increases by 12 / 14 / 16 / 18 / 20. When the wearer deals DMG, ignores 18.0 / 22.5 / 27.0 / 31.5 / 36.0% of the target's DEF. After the wearer uses Ultimate, obtains "Blazing Sun," which is removed at the start of their turn. While "Blazing Sun" is in possession, increases the wearer's DMG dealt by 60.0 / 78.0 / 96.0 / 114.0 / 132.0%.
This is Phainon's Signature Lightcone and is his best-in-slot by far and nothing comes close. This Lightcone has the highest base ATK of any Destruction Lightcone in the game, increases his base SPD (which works with his Ultimate), has DEF ignore and a huge damage boost.
On the Fall of an Aeon (S5)
100%
When the wearer attacks, increases their ATK by 8.0 / 10.0 / 12.0 / 14.0 / 16.0% in this battle. This effect can stack up to 4 time(s). After the wearer breaks an enemy's Weakness, increases DMG dealt by 12.0 / 15.0 / 18.0 / 21.0 / 24.0%, lasting for 2 turn(s).

Sources: Herta's Store
This is the Herta Shop Remembrance Lightcone making it reasonably easy to get. This lightcone provides a significant amount of ATK % as well as DMG % when you break an enemy. Phainon will cause all enemies to be weak to Physical during his Ultimate He Who Bears the World Must Burn so he gets high uptime on the buff. If you are not getting high uptime on the Break buff or are having trouble surviving Something Irreplaceable might be a better option.
Something Irreplaceable (S1)
99.3%
Increases the wearer's ATK by 24.0 / 28.0 / 32.0 / 36.0 / 40.0%. When the wearer defeats an enemy or is hit, immediately restores HP equal to 8.0 / 9.0 / 10.0 / 11.0 / 12.0% of the wearer's ATK. At the same time, the wearer's DMG is increased by 24.0 / 28.0 / 32.0 / 36.0 / 40.0% until the end of their next turn. This effect cannot stack and can only trigger 1 time per turn.

Sources: Stellar Warp
This is Clara's Signature 5★ Lightcone. This is available from all wishes including Standard Banner and lost Rate UP on other banners. Additionally it can be acquired from the Starlight Exchange for 600 Undying Starlight (30 pulls worth).
This Lightcone gives ATK % as well as a DMG % boost whenever you get hit or defeat an enemy. Due to Phainon making all his allies enter the Departed state he will constantly get hit and the buff will not decrement during his Ultimate making this Lightcone very good.
This Lightcone also is the best Lightcone for Survivability because it heals Phainon when he gets hit and can occur on each of his extra turns.
A Trail of Bygone Blood (S5)
99.2%
Increases the wearer's CRIT Rate by 12.0 / 14.0 / 16.0 / 18.0 / 20.0%. The Skill DMG and Ultimate DMG dealt by the wearer increase by 24.0 / 28.0 / 32.0 / 36.0 / 40.0%.
This is a 4★ Battlepass Lightcone that provides a significant amount of CRIT Rate, Skill DMG and Ultimate DMG. Approximately 85% of Phainon's damage is Skill or Ultimate (~100% on AOE).
Nowhere to Run (S5)
94.5%
Increases the wearer's ATK by 24.0 / 30.0 / 36.0 / 42.0 / 48.0%. Whenever the wearer defeats an enemy, they restore HP equal to 12.0 / 15.0 / 18.0 / 21.0 / 24.0% of their ATK.

Sources: Nameless Glory
This is a 4★ Battlepass Lightcone that provides a very large ATK % increase and a small heal whenever they defeat an enemy. We do not suggest going out of your way to obtain this as the new Battlepass Lightcone is better.
A Trail of Bygone Blood (S1)
93.7%
Increases the wearer's CRIT Rate by 12.0 / 14.0 / 16.0 / 18.0 / 20.0%. The Skill DMG and Ultimate DMG dealt by the wearer increase by 24.0 / 28.0 / 32.0 / 36.0 / 40.0%.
Indelible Promise (S5)
91.6%
Increases the wearer's Break Effect by 28.0 / 35.0 / 42.0 / 49.0 / 56.0%. When the wearer uses their Ultimate, increases CRIT Rate by 15.0 / 18.8 / 22.5 / 26.3 / 30.0%, lasting for 2 turn(s).

Sources: Stellar Warp
This is a 4★ Limited Lightcone that provides a Break Effect % and a big CRIT Rate buff when casting Ultimate. As buffs do not tick down during Phainon's Ultimate this will be up nearly all the time making this quite strong even though the Break Effect does very little.
A Secret Vow (S5)
90.9%
Increases DMG dealt by the wearer by 20.0 / 25.0 / 30.0 / 35.0 / 40.0%. The wearer also deals an extra 20.0 / 25.0 / 30.0 / 35.0 / 40.0% of DMG to enemies whose current HP percentage is equal to or higher than the wearer's current HP percentage.

Sources: Stellar Warp
This is a 4★ Limited Lightcone that provides a lot of DMG %. The DMG % is also increased on targets with higher percentage Health remaining than Phainon which happens more often than on other Characters but is still rare enough that we excluded that effect from the Evaluation here.
Ninja Record: Sound Hunt (S5)
87.4%
Increases the wearer's Max HP by 12.0 / 15.0 / 18.0 / 21.0 / 24.0%. When losing or restoring this unit's HP, increases CRIT DMG by 18.0 / 22.5 / 27.0 / 31.5 / 36.0%, lasting for 2 turn(s). This effect can only trigger once per turn.

Sources: Event Warp (limited)
This is a 4★ Event Lightcone that provides Max HP % and grants a buff whenever you lose HP or heal that gives CRIT DMG. This buff will be up 100% of the time because he heals himself during his Ultimate.
A Secret Vow (S1)
86.7%
Increases DMG dealt by the wearer by 20.0 / 25.0 / 30.0 / 35.0 / 40.0%. The wearer also deals an extra 20.0 / 25.0 / 30.0 / 35.0 / 40.0% of DMG to enemies whose current HP percentage is equal to or higher than the wearer's current HP percentage.

Sources: Stellar Warp
Collapsing Sky (S5)
80.8%
The wearer's Basic ATK and Skill deal 20.0 / 25.0 / 30.0 / 35.0 / 40.0% more DMG.

Sources: Stellar Warp
This is a 3★ Lightcone that provides a lot of Basic ATK DMG % and Skill DMG %. We do not suggest using this unless you have no other alternative as most 4★ S1 Lightcones will beat this.

Best Relics and Planar Ornaments for Phainon

Best Relics for Phainon

These are the best Relic Sets to build for Phainon. The percentage shows the relative difference to Phainon's best performing set.

Wavestrider Captain
100%
2-Piece Set: Increases CRIT DMG by 16.0%.
4-Piece Set: When the wearer becomes the target of another ally target's ability, gains 1 stack of "Help," stacking up to 2 time(s). If there are 2 stack(s) of "Help" when the wearer uses their Ultimate, consumes all "Help" to increase the wearer's ATK by 48.0% for 1 turn(s).
This is Phainons best Relic set to Build. The 2pc CRIT DMG is one of the best 2pc effects for Phainon and the 4pc gives Phainon nearly permanent 48% ATK as the buff will not expire during his Ultimate.
Scholar Lost in Erudition
97.6%
2-Piece Set: Increases CRIT Rate by 8.0%.
4-Piece Set: Increases DMG dealt by Skill and Ultimate by 20.0%. After using Ultimate, additionally increases the DMG dealt by the next Skill by 25.0%.
This is the 2nd best Relic Set for Phainon. The 2pc provides CRIT Rate which is very good and the 4pc provides Ultimate and Skill DMG. Approximately 85% of Phainon's Damage is Skill or Ultimate (100% on AoE) so this is quite potent.
Wavestrider Captain
94.3%
Scholar Lost in Erudition
2-Piece Set: Increases CRIT DMG by 16.0%.
4-Piece Set: When the wearer becomes the target of another ally target's ability, gains 1 stack of "Help," stacking up to 2 time(s). If there are 2 stack(s) of "Help" when the wearer uses their Ultimate, consumes all "Help" to increase the wearer's ATK by 48.0% for 1 turn(s).
2-Piece Set: Increases CRIT Rate by 8.0%.
4-Piece Set: Increases DMG dealt by Skill and Ultimate by 20.0%. After using Ultimate, additionally increases the DMG dealt by the next Skill by 25.0%.
If you do not have a good set of Wavestrider Captain or Scholar Lost in Erudition pieces then hybrid 2pc-2pc is another viable option. These are suggested 2pc pieces in the order we would recommend using them in:
  1. Scholar Lost in Erudition (8% CRIT Rate)
  2. Wavestrider Captain (16% CRIT DMG)
  3. Hero of Triumphant Song/The Wind-Soaring Valorous/Prisoner in Deep Confinement/Musketeer of Wild Wheat - (12% ATK)

Best Planar Ornaments

Arcadia of Woven Dreams
100%
2-Piece Set: When there are currently more or less than 4 ally targets in battle, each additional/missing ally target increases the wearer and their memosprite's DMG by 9.0%/12.0%, up to a maximum of 4/3 stacks.
This is Phainon's best-in-slot Planar Ornament providing him with 36% DMG during his Ultimate because he will be the only active unit.
Rutilant Arena
98.9%
2-Piece Set: Increases the wearer's CRIT Rate by 8.0%. When the wearer's current CRIT Rate reaches 70.0% or higher, DMG dealt by Basic ATK and Skill increases by 20.0%.
This is Phainon's 2nd best Planar Ornament. You get 8% CRIT Rate and if your CRIT Rate is 70% or higher increases DMG dealt by Basic ATK and Skills by 20%. Basic ATK and Skills make up approximately 85% of Phainons Damage.

Phainon's Stat Priority

Body
CRIT Rate
>
CRIT DMG
Feet
ATK%
Planar Sphere
Physical DMG Boost
>
ATK%
Link Rope
ATK%
Stat Priority
CRIT Rate
>
CRIT DMG
>
ATK%

Recommended Endgame Stats for Phainon

HP
2800+
DEF
1200+
ATK
3200+
CRIT Rate
80% -100%
SPD
Base SPD
CRIT DMG
140%+

Traces Priority

Skills Priority
Skill > Talent > Basic > Ultimate
Major Traces Priority
March to Oblivion > Shine with Valor > Bide in Flames

Phainon Build Comments

Character Explanation Gearing Tips Sustainless Teams

Character Explanation

Phainon's gameplay focuses around his Ultimate He Who Bears the World Must Burn that transforms him into Khaslana. Phainon does not use energy to cast his Ultimate and instead uses Coreflames generated by his Skill, from his talent Pyric Corpus or from his A4 Trace Bide in Flames.

Phainon's Ultimate will cause all allies to enter the Departed state, removing them from the turn order, until Phainon's Ultimate ends. When Phainon or his allies return to the fight they will have the same Action Value left to their next turn as they did when the Ultimate was cast. If Phainon uses his Ultimate during a character's turn it will count as if their turn has already been taken so we recommend using one of their Actions then immediately queueing his Ultimate.

While transformed into Khaslana Phainon will use Scourge for his abilities in place of skill points and will heal himself for 25% Health after every Attack. Scourge is retained between Ultimates although only a maximum of 7 can be had at any one time. As he generates 4 points of Scourge when he transforms this means you can carry forward a maximum of 3 Scourge from a previous Ultimate to your next. This means you should not use Foundation: Stardeath Verdict on his penultimate extra turn if you do not have 4 Scourge, as you could use them in the next Ultimate.

During his Ultimate Transformation he does not take regular turns, only the 8 Extra Turns from his Ultimate or from his Eidolon 2 Sky and Earth Churn Mortal Froth. A mechanic with Extra Turns is that buffs and debuffs do not expire while you are taking an Extra Turn allowing you to have short duration buffs like Bronya's Combat Redeployment for his entire Ultimate.

Gearing Tips

The most important thing with Phainon is to make sure your in combat CRIT Rate is capped. Phainon gets a large amount of CRIT DMG from his best support units so CRIT Rate takes priority over CRIT DMG or ATK %.

When evaluating gear choices, ATK % is roughly equivalent to 0.8 rolls of CRIT DMG which is quite good!

When gearing Phainon SPD substats have very little value because Phainon's Ultimate He Who Bears the World Must Burn has a Fixed SPD based on his Base SPD and he spends most of the fight transformed. Additionally, his best support units are Action Advance units which invalidate the need for him to gain SPD so you can run him at base SPD and advance him with fast Advance Supports.

If you are playing Sparkle you need to be careful to make sure that after Sparkle's Action Advance that Phainon will have his turn before any other Action Advance unit on your team or it will effectively waste Sparkle's Action Advance. This may require a few SPD substats unlike some of his other teams.

Sustainless Teams

Due to Phainon naturally being self sustaining during his Ultimate He Who Bears the World Must Burn and making all his Allies Depart when transforming via his ultimate it is possible to play sustainless teams more easily than with other Main DPS. These teams are not suitable for all content and may make it harder for you to clear but with sufficient investment can lead to some of the fastest clears in the game. While playing Sustainless you need to minimise the time your support units are on field and are vulnerable to receiving enemy attacks as they cannot heal themselves like Phainon.

Best Synergies for Phainon

Sunday
Sunday

Sunday is the best Action Advance support in the game. Sunday provides 20% CRIT Rate, significant CRIT DMG buff and 30% DMG boost in addition to the Action Advance. Sunday's Ultimate also targets Phainon so it will generate two stacks of Coreflame (one for targeting, one for generating energy).

Bronya
Bronya

Bronya is a powerful Action Advance unit that provides a large single turn DMG increase with her Skill and ATK % and CRIT DMG % with her Ultimate. Bronya targets with her Skill and Ultimate so both grant stacks of Coreflame. The large Single Turn buff from her skill means Bronya has to be the last unit to act before Phainon's Ultimate so he has the buff for his entire Ultimate, we suggest Bronya being slightly slower than other advance units to make this easier.

Sparkle
Sparkle

Sparkle is a powerful Action Advance unit that provides a large CRIT DMG increase with her Skill as well as passive ATK % and DMG %. Sparkle targets with her Skill and Ultimate so both grant stacks of Coreflame. Sparkle's buff effectively lasts for two turns making her convenient to use, although care has to be made for SPD tuning to not waste her Action Advance.

Tingyun
Tingyun

Tingyun is a 4★ Harmony unit that is quite strong with Phainon. Tingyun provides a moderate increase to ATK % and DMG % and makes Phainon deal Additional DMG on attack. Tingyun targets with her Skill and Ultimate so both grant stacks of Coreflame. Tingyun is especially powerful as she is naturally very with Dance! Dance! Dance! which is a very strong 4★ Limited Lightcone.

Remembrance Trailblazer
Remembrance Trailblazer

The Remembrance Trailblazer is a strong support unit with Phainon Teams. The Remembrance Trailblazer does not provide as many stacks of Coreflame as other support units but provides 36% damage replication as True DMG alongside a large CRIT DMG buff.

Huohuo
Huohuo

Huohuo is an excellent Sustain unit for Sustain Phainon teams. As a Sustain Unit Huohuo will provide 45% DMG from Phainons A4 Trace Bide in Flames as well as granting stacks of Coreflame. Huohuo's Ultimate grants 40% ATK to Phainon as well as an additional Coreflame from the Energy Generation.

Hyacine
Hyacine

Hyacine is a strong Sustain Unit for Phainon Teams. Hyacine will trigger Phainons A4 Trace Bide in Flames whenever she heals Phainon which will give Phainon 45% increased DMG. Additionally, she will generate stacks of Coreflame from both her Skill and Ultimate as they both count as targeting Phainon. Little Ica's healing will still heal Phainon even while Little Ica is departed.

Phainon's Best Teams

This is not a comprehensive list of teams. The inclusion or exclusion of any given team does not necessarily reflect its power level. We have included several example teams that are more F2P friendly using 4★ characters that are lower power than the 5★ teams as examples. The sustain unit in each team can be swapped out.

Phainon Sunday Sparkle Huohuo
Phainon Sunday Sparkle Tingyun
Phainon Sunday Bronya Tingyun
Phainon Sunday Robin Huohuo
Phainon Sunday Tingyun Huohuo
Phainon Bronya Tingyun Hyacine
Phainon Bronya Remembrance Trailblazer Hyacine
Phainon Tingyun Remembrance Trailblazer Gallagher

Phainon's Best Eidolons

Listed below are our calculations for Phainon's Eidolons. Some Eidolons have different power depending on the situation creating a range. "Diff E0" will always use the Lower-bound of previous Eidolons.
Phainon's first two Eidolons are exceptional while the rest are weaker or Niche making E2 the best stopping point for value.

Eidolon % Diff % Diff E0 Comment
Fire and Light Bind Virtue and Vice 15%-25% 15%-25% Value gained increases depending on how many kills he gets.
Sky and Earth Churn Mortal Froth 60%-140% 84%-176% Value gained increases with enemy targets. On AoE Phainon can use his Counter making this Eidolon way stronger. 60% 1-2T, 120% 3T, 140% 4T+
Depths of Quiet, Entombed in Ruin 1%-3% 85.8%-86.5% Worse with more targets as Basic ATK and Ultimate are less of his total damage.
Faces of Titans, Blurred by Time 0-10.8% 85.8%-95.1% Only a gain when Phainon can use his Counter (2T+ and when it wont kill him).
The Wheel Spins Forevermore 8.2%-10.8% 92.8%-95.1% Always Good. Better with more targets as more damage is from his Skills.
Embers of Old Rise Still 19%-33% 110.4%-123.4% Gets worse with more targets as Foundation: Stardeath Verdict is less of his damage.
Saeldur
Staff Author
Follow Saeldur

This guide was written by Saeldur, expert Honkai: Star Rail theorycrafter and guide writer for Icy Veins. Saeldur is a high-end HSR player with a deep understanding of the various characters while also clearing PF, MoC and AS when each cycle releases.