phainon

Phainon

DestructionPhysical5★Released: 01/07/2025 · v3.4
Last updated: 24/06/2026
Prisoner of Flames

“I’m Phainon of Aedes Elysiae. Greetings. As fellow outlanders in Okhema, our meeting is surely fate’s design. Come. Maybe we’ll even have a chance to fight alongside each other in the future.”

Should You Pull for Phainon?

Main DPS

Phainon is a Physical DPS who builds up Coreflame and then transforms. At 12 points, his Ultimate turns him into Khaslana: his teammates become Departed for a while, every enemy gains a Physical Weakness, and Phainon carries the fight on his own with huge damage multipliers. If you still don't have a Physical DPS for endgame content, he is well worth considering.

He fits best on accounts that already have Sunday and Bronya, since both advance his turn and help him stack Coreflame very fast. No premium 5-star supports yet? That's fine, Phainon still does well with easy-to-get teammates like Trailblazer (Remembrance) or Tingyun.

Memory of Chaos Very strong Against bosses or a small number of targets his damage is enormous, and this is where he shines.
Pure Fiction Very strong Against big crowds his damage gets spread onto targets that don't need it, so he isn't as dominant as in single-target fights.
Apocalyptic Shadow Very strong Very high Toughness reduction plus the Physical Weakness he applies on his own lets him break bosses quickly, and Ruan Mei makes this even better.
Pros & Cons

Pros

  • Simple yet extremely strong
  • Playable without a sustain unit, and he even prefers it that way
  • Has plenty of good free teammate options
  • Makes good use of even short-duration buffs
  • His Ultimate turns him into a genuine boss with enormous durability, crowd control immunity, and death resistance
  • Huge damage multipliers that soak up ally buffs extremely well
  • Absolutely dominates single-target fights
  • Enormous room left to grow

Cons

  • In long fights the team's Energy and HP can run dry after a few transformations
  • Extremely reliant on a genuinely good Relic set
  • Careless use of Taunt can lead to unwanted situations
  • Poor at AoE because his damage gets spread onto targets that do not need it

Best Phainon Build Guide

Best Phainon Build

Phainon is a DPS who scales with ATK and CRIT stats. His Traces already give him a good amount of CRIT DMG, so go for CRIT Rate on his Body.

Best Light Cones

  • 1 Thus Burns the Dawn Thus Burns the Dawn Best
    His signature Light Cone, and it is far ahead of every other option. It has very high base ATK (687), ignores 18% of the enemy's DEF on every attack and gives a big DMG boost during his transformation. It also adds base SPD, which is exactly what makes him act faster during his Ultimate. Still, it is an upgrade, not a must-have.
  • 2 On the Fall of an Aeon On the Fall of an Aeon Great
    The best cheaper option (at Superimposition 5). It gives a ramping ATK% buff and extra DMG on Weakness Break, and Phainon breaks enemies easily thanks to the Physical Weakness he applies. Its buffs also don't tick down while he is transformed. The downside is its low base ATK.
  • 3 A Trail of Bygone Blood A Trail of Bygone Blood Great
    A 4-star Light Cone that gives CRIT Rate and boosts his Skill and Ultimate DMG. It is best when you don't have Sunday and are struggling to get enough CRIT Rate, and in that case it often beats On the Fall of an Aeon. Once your CRIT Rate is already high enough, it falls behind because of its low base ATK.
  • 4 Something Irreplaceable Something Irreplaceable Good
    Clara's signature, worth using if you already own it and On the Fall of an Aeon is on someone else. It raises his DMG when he attacks or gets hit, and during his transformation he gets hit constantly and the buff lasts through his whole Ultimate.
  • 5 Under the Blue Sky Under the Blue Sky Good
    An easier-to-get 4-star option that gives ATK% and CRIT Rate.

Best Relics

1
One of his two best sets and the one most players use. His whole kit is about being targeted by teammates, so stacking it is easy. When he uses his Ultimate, he spends the stacks for an ATK buff that lasts until his transformation ends.
2
About as good as Wavestrider Captain, sometimes slightly better. It boosts his Skill DMG, and the stacks don't fall off while he is in his Ultimate. It pulls ahead when you run Cerydra, when Cyrene keeps him transformed longer, or once he has E2, because his supports usually give lots of ATK but few DMG boosts.
3
A generic option that gives CRIT Rate and boosts his Skill and Ultimate DMG. It isn't far behind Wavestrider Captain.

Best Planar Ornaments

1
His best Ornament. It increases DMG when there are fewer allies on the field. During his transformation all his teammates are Departed, so Phainon counts as alone and the DMG bonus stays at its maximum of 36%.
2
Gives CRIT Rate and boosts Basic ATK DMG and Skill DMG, and the buff carries over into his transformation. Most of Phainon's damage is Basic ATK and Skill DMG (apart from the final hit of his Ultimate), so this set stays very close to the top pick.
3
A stopgap for the early game that gives ATK as long as Phainon has at least 120 SPD.

Main Stats

  • BodyCRIT Rate or CRIT DMG
  • FeetATK% or SPD
  • Planar SpherePhysical DMG Boost or ATK%
  • Link RopeATK%

Substats

  • 1CRIT Rate
  • 2CRIT DMG
  • 3ATK%
  • 4SPD

CRIT Rate is the main pick for Body, with CRIT DMG only as a backup. Boots depend on your turn-advance supports: if Sunday or Bronya already have 160 SPD or more, take ATK%, since they push Phainon to the front of the turn order themselves. If they have at least 134 SPD but not 160 yet, use SPD Boots so Phainon is faster than them and builds Coreflame quicker. With Cerydra on the team, her SPD buff lets you swap SPD Boots for ATK% without losing anything. For the Sphere, take Physical DMG Boost first and ATK% second.

If you are tuning Phainon to be 1 SPD faster than Sunday or Bronya, get SPD up to that point first, then go for CRIT. Keep in mind that SPD doesn't add damage during his transformation, because his Ultimate only uses his base SPD. SPD only helps him build Coreflame faster outside of it.

Stat Targets

  • CRIT Rate90% to 100%
  • CRIT DMG160% to 180% or more (before Traces)
  • ATK2200 to 2600 or more, 2500 and up is enough
  • HP3200 or more
  • DEF1000 or more
  • SPD1 higher than Sunday or Bronya (for example 136 against 135 and 134)

Skill Priority

Skill > Talent = Ultimate = Basic ATK

Level his Skill first, since most of his damage comes from it. The other three are close to each other. His Talent increases the buffs he gets from allies and when he transforms, and his Ultimate increases the damage of the final hit when his transformation ends. Basic ATK can wait because you will use his Skill much more often.

Trace Priority

March to Oblivion > Bide in Flames > Shine with Valor

March to Oblivion gives 1 Coreflame at the start of battle and 3 Coreflame each time his transformation ends, so his next Ultimate comes sooner. Bide in Flames increases his DMG by 45% when a teammate heals him or gives him a Shield, and gives 1 Coreflame when a teammate regenerates his Energy. Shine with Valor gives 50% ATK when he enters battle and each time his transformation ends, stacking up to 2 times. All three are worth unlocking early.

Eidolon Priority

E2 is the best stopping point

E1 raises the base SPD inheritance ratio for Khaslana's extra turns and gives 50% CRIT DMG for 3 turns after he uses his Ultimate. E2 adds 20% Physical RES PEN, and each time Foundation: Stardeath Verdict consumes 4 Scourge he gets 1 extra turn. E4 gives 4 extra stacks of Soulscorch when he uses Calamity: Soulscorch Edict. E6 removes the cap on overflow Coreflame, gives 6 Coreflame at the start of battle and adds True DMG after each Foundation: Stardeath Verdict attack.

Best Phainon Teams

Generalist Team

Replace Robin • Summeretto with: Sunday, Bronya, Sparkle, Cyrene Replace Huohuo with: Dan Heng • Permansor Terrae, Gallagher

This team pairs Phainon with supports who advance his turn and restore his Energy. Robin • Summeretto advances his turn and Cerydra boosts his Skill DMG. Huohuo restores Energy and gives ATK, and her healing on Phainon also triggers Bide in Flames. Remember that the CRIT DMG buff from his Talent only kicks in when a teammate's ability targets Phainon.

No-Sustain Team

Replace Robin • Summeretto with: Sunday, Bronya, Sparkle, Tingyun

Phainon spends most of the fight transformed, and his Departed teammates can't be hit, so this team drops the sustain slot entirely. Cyrene keeps him transformed longer, Cerydra heavily buffs his Enhanced Skill, and Robin • Summeretto advances his turn and boosts his ATK.

Shield Team for Long Fights

Sunday advances Phainon's turn, gives CRIT Rate and restores Energy, while Cerydra powers up his Enhanced Skill. Dan Heng • Permansor Terrae attaches his Souldragon to Phainon, and it stays on him during the transformation, so it keeps giving Shields and launching Follow-up ATKs. This team suits long, high-pressure fights because everyone stays safe even before Phainon transforms.

Budget Team (4-Stars and Trailblazer)

Replace Lynx with: Gallagher

The trick here is to pick two supports whose buffs target Phainon alone. The memosprite charge of Trailblazer (Remembrance) keeps building even while Phainon is transformed. Tingyun gives him ATK and restores his Energy. Lynx handles sustain, and if you want to save Skill Points, swap her for Gallagher.

Best Teammates for Phainon

Cerydra
Cerydra

One of his best teammates. She repeats his Enhanced Skill at full power without using extra Scourge and buffs that attack massively. Her SPD buff also lets Phainon swap SPD Boots for ATK%.

Sunday
Sunday

One of the best turn-advance supports for Phainon, giving lots of Coreflame through his Skill, Ultimate and action advance. His CRIT Rate buff is much needed, since Phainon's best build lacks CRIT Rate sources.

Cyrene
Cyrene

She lets Phainon stay transformed almost indefinitely, refreshing his extra turns and recovering Scourge, and she adds CRIT buffs too. The catch is that her Ultimate comes up slowly without other Remembrance characters on the team.

Robin • Summeretto
Robin • Summeretto

Advances Phainon's turn. When he transforms, she leaves the field along with her countdown, so her built-up progress isn't lost, though her E1 won't work. She doesn't need any particular stats and can run HP% on all 4 main-stat slots to give Phainon a huge ATK boost.

Bronya
Bronya

Your replacement for Sunday if you don't have him. She targets Phainon every turn to give him an immediate action, worth up to 3 Coreflame. The 1-turn buff from her Skill also lasts through his whole transformation.

Dan Heng • Permansor Terrae
Dan Heng • Permansor Terrae

The Souldragon on Phainon isn't removed by his Ultimate, so it keeps giving Shields and launching Follow-up ATKs while he is transformed. The Shields also trigger Bide in Flames, which makes him a great pick for long fights.

Huohuo
Huohuo

Her Skill and Ultimate both target Phainon for Coreflame, and her Ultimate gives 2 points because it also regenerates his Energy, along with an ATK buff. Her healing triggers the 45% DMG boost from his Trace as well.

Ruan Mei
Ruan Mei

Very important in Apocalyptic Shadow, because Phainon's Toughness reduction is huge and gets even more out of her Weakness Break Efficiency. All of her buffs still work while he is transformed.

Trailblazer (Remembrance)
Trailblazer (Remembrance)

An easy-to-get turn-advance option. The Trailblazer gives less Coreflame than Bronya and Sunday, but in return gives Phainon a True DMG boost, a kind of multiplier he usually doesn't have yet.

Tingyun
Tingyun

The 4-star choice when you don't have premium supports. She helps him build Coreflame, gives ATK and restores Energy, and her buffs last long enough that she doesn't clash with Bronya if you run both.

How to Play Phainon

Build 12 Coreflame to Transform

Phainon doesn't use normal Energy. His Ultimate needs 12 points of Coreflame instead. His Skill gives 2 points each time. Whenever he becomes the target of anyone's ability, enemies included, he gains 1 point, and if it comes from a teammate he also gets a CRIT DMG boost for 3 turns. Energy regeneration from a teammate gives 1 more point. After hitting 12 you can still store up to 3 extra points, and when the transformation ends you get Coreflame back based on that excess.

The Khaslana Form

His Ultimate transforms Phainon into Khaslana and deploys a Territory. His teammates become Departed and can't take action, and every enemy gains a Physical Weakness. Khaslana gets 8 Khaslana's extra turns with a fixed SPD equal to 60% of his base SPD, and buffs on him don't tick down during these turns. Khaslana is immune to Crowd Control debuffs and restores HP after each attack. When he takes a killing blow, he isn't knocked down: he restores HP and immediately launches his Final Hit, but its damage drops based on how many extra turns he has left. Normally the Final Hit fires automatically at the start of his last extra turn and hits all enemies. When the transformation ends, all allies get 15% SPD for 1 turn.

Cycling Scourge While Transformed

Khaslana gets 4 Scourge right away when he transforms. Foundation: Stardeath Verdict is his main attack: every Scourge it consumes adds 4 bounces on random enemies, and at 4 Scourge it adds one big hit split evenly across all enemies. Using it with fewer than 4 throws away a lot of damage, so it's best to gather 4 first.

You have two ways to refill Scourge. His Enhanced Basic ATK, Creation: Bloodthorn Ferry, gives 2. Calamity: Soulscorch Edict gives Scourge equal to the number of enemies on the field, then makes all enemies take action immediately. During that time Khaslana takes 75% less DMG, and he gains 1 stack of Soulscorch each time an enemy attacks or takes action. Once the last enemy finishes, he counters every enemy, and each Soulscorch stack adds 20% of the original multiplier to that Counter. Against 3 or more enemies (when letting them act early has no downside), Calamity is usually the better deal, while in a one-on-one fight you should use the Enhanced Basic ATK.

Use His Technique Before Battle

With Phainon in the team, your Max Technique Points go up by 3. His Technique, Beginning of the End, defeats normal enemies in the overworld right away, and it costs no points if it misses. When you enter battle with it, all allies regenerate 25 Energy and Phainon deals DMG to all enemies at the start of each wave. It also lets Bronya have her Ultimate ready after the first turn.

Quick Tips

  • Prioritize supports whose buffs target Phainon alone, since each time a teammate targets him he gains Coreflame and a CRIT DMG boost.
  • Robin and Tribbie have no buffs that target a single ally, but Robin can still advance his turn and Tribbie's Ultimate helps against multiple enemies.
  • When Robin • Summeretto plays with Phainon, put HP% on all 4 of her main-stat slots to give him a huge ATK boost.
  • Tingyun with Dance! Dance! Dance! can advance Phainon's turn on top of her usual ATK buff and Energy restoration.
  • If you want to try another Relic set, 4-piece Champion of Streetwise Boxing also works, because Phainon is the only target during his transformation and gets hit constantly.

Phainon Skills

Basic ATK

Stride to Deliverance

[Single Target]
Energy Generated20
Toughness Break Single Target: 10

Deals Physical DMG equal to 140% of Phainon’s ATK to one designated enemy.

Lv. 10

Upgrade Materials

Lv. 1 to Lv. 10

Let There Be Light

[Blast]
Energy Generated30
Toughness Break AoE: 20

Gains 2 point(s) of “Coreflame,” dealing Physical DMG equal to 375% of Phainon’s ATK to one designated enemy and Physical DMG equal to 150% of Phainon’s ATK to adjacent targets.

Lv. 15

Upgrade Materials

Lv. 1 to Lv. 15

He Who Bears the World Must Burn

[AoE]
Energy Generated5
Toughness Break Single Target: 30 / Blast: 15

Transforms into Khaslana. During the transformation, deploys the Territory “Ruinous Irontomb.” Within the Territory, other teammates depart and cannot take action, and all enemies have Physical Weaknesses.
Khaslana does not enter his own turn, but has 8 Khaslana’s extra turn(s), with a SPD set at 60% of Khaslana’s base SPD. When the last of Khaslana’s extra turns starts, immediately launches a final hit and deals Physical Ultimate DMG equal to 1200% of Khaslana’s ATK that is distributed evenly across all enemies.

Lv. 15

Upgrade Materials

Lv. 1 to Lv. 15

Pyric Corpus

[Enhance]
Energy Generated5

Phainon’s Talent. When “Coreflame” reaches 12 point(s), can activate Ultimate. Even after reaching the limit, can still hold up to 3 overflow point(s). When the transformation ends, gains “Coreflame” based on the number of overflow points.
When Phainon is targeted by an ability from any other target, gains 1 “Coreflame” point. And if the ability is cast by one of Phainon’s teammates, can also increase Phainon’s CRIT DMG by 38% for 3 turn(s).

Lv. 15

Upgrade Materials

Lv. 1 to Lv. 15

Beginning of the End

[Enhance]
Energy Generated5

While Phainon is in the team, increases Max Technique Points by 3.
When actively using this Technique, consumes 2 Technique Points and immediately attacks all enemies within a certain range. After entering combat, regenerates 0 Energy for allies and gains 0 “Scourge” and 1 Skill Point(s). Deals Physical DMG equal to 400% of Phainon’s ATK to all enemies at the start of each wave.
If attacking a normal enemy, immediately defeats them without entering combat. No Technique Points are consumed if no enemies are hit.

Upgrade Materials

Lv. 1 to Lv. 15

Phainon Traces

Total Trace Bonuses
  • Sát Thương Bạo Kích +37.3%
  • Tỷ Lệ Bạo Kích +12%
  • SPD +5

Phainon Eidolons

Fire and Light Bind Virtue and Vice
Eidolon 1

The base SPD inheritance ratio for Khaslana’s extra turn increases to 66%. For every enemy target defeated in one battle, additionally increases this ratio by 1.5%, up to a max of 84%.
When using Ultimate, increases CRIT DMG by 50%, lasting for 3 turn(s).

Sky and Earth Churn Mortal Froth
Eidolon 2

Khaslana’s Physical RES PEN increases by 20%. When one use of “Foundation: Stardeath Verdict” consumes 4 “Scourge” point(s), gains 1 extra turn.

Depths of Quiet, Entombed in Ruin
Eidolon 3

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

Faces of Titans, Blurred by Time
Eidolon 4

When using “Calamity: Soulscorch Edict,” additionally gains 4 stack(s) of “Soulscorch.”

The Wheel Spins Forevermore
Eidolon 5

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

Embers of Old Rise Still
Eidolon 6

The number of overflow points allowed for “Coreflame” no longer has an upper limit. When the battle starts, gains 6 point(s) of “Coreflame.”
After using the attack from “Foundation: Stardeath Verdict,” additionally deals True DMG equal to 36% of the total DMG dealt in this attack to the enemy target with the highest HP.

Stats Base

Lv. 80
  • HP Base—
  • ATK Base—
  • DEF Base—
  • SPD—
  • Taunt—

Ascension Materials

20304050607080

About Phainon

Other Names
Khaslana NeiKos496 Khaos
Trạng thái
Exists within As I've Written
Path story
Destruction
World
Amphoreus
Role
"Eternal Holy City" Okhema
Signature Light Cone
Thus Burns the Dawn
Debut Banner
To Evermore Burn as the Sun
Release Date
2025-07-02
Version
introduced in 2.6, playable from 3.4

Faction

  • Amphoreus
  • Chrysos Heirs
  • Aedes Elysiae
  • Okhema
  • Grove of Epiphany
  • Nousporists

Relatives

  • Hieronymus (father)
  • Audata (mother)
EN Joshua Waters Justine Huxley (Childhood)
CN Qin Qiege (秦且歌) Mi Yang (弭洋) (Childhood)
JP Hino Satoshi (日野 聡) Aihara Kotomi (藍原 ことみ) (Childhood)
KR Yoon Yong-sik (윤용식) Park Ha-jin (박하진) (Childhood)
  • The Nameless Hero
  • Deliverer
  • Blazing Sun
  • Flame Reaver
  • Throne of Worlds
  • Vessel of the Destruction
  • Worldbearer
  • Bearer of Chaos

Playstyle overview

Phainon is a damage dealer who can transform into {{Obfuscate

Phainon FAQ

Is Phainon worth pulling?
Yes, especially if you already have Sunday and Bronya, or if you have no Physical DPS yet. He shines most in Memory of Chaos and Apocalyptic Shadow, while in Pure Fiction his damage gets spread out when there are lots of enemies.
What Light Cone should Phainon use without his signature?
On the Fall of an Aeon is the best cheaper option. A Trail of Bygone Blood is a good fit if you are short on CRIT Rate, and Under the Blue Sky also works.
Should Phainon use SPD or ATK% Boots?
It depends on your supports. If Sunday or Bronya already have 160 SPD or more, take ATK%. If they have at least 134 SPD but not 160 yet, use SPD Boots and make Phainon 1 SPD faster than them.
Does Phainon need a sustain?
Not necessarily. While he is transformed his teammates are Departed and can't be hit, and Phainon restores HP after each attack and doesn't go down right away from a killing blow. That said, in long fights the team's HP and Energy can run low after a few transformations, so bringing Dan Heng • Permansor Terrae or Huohuo is safer there.
Which Eidolon should I stop at?
E2 is the best stopping point if you want to invest more: it adds 20% Physical RES PEN and gives 1 extra turn each time Foundation: Stardeath Verdict consumes 4 Scourge. E6 is also a big jump in power, but it costs much more.