Honkai Star Rail Guide

Phainon Build Guide

Last updated: April 18, 2026 1:59 PM

Phainon Story

Phainon Stats at Lv. 80

Phainon Abilities

Phainon Normal Attack

Weakness Break : 10

Single Target

Level: 1

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

Phainon Ultimate

Weakness Break : 20

Energy Cost: 12 (MAX=15)

Level: 1

Transforms into █████ and deploys Territory during transformation. Other teammates in the Territory becomes Departed and cannot take action, and all enemies gain Physical Weakness. █████ does not have his own turn, but has 8 █████’s extra turn(s) with a fixed SPD equal to 60% of █████’s base SPD. At the start of the final █████’s extra turn, immediately launches Final Hit and deals Physical Ultimate DMG equal to of █████’s ATK that is distributed evenly across all enemies.

Phainon Talent

Level: 1

Phainon’s Talent. When “Coreflame” reaches 12 point(s), Ultimate can be activated. After reaching the max limit, up to 3 excess point(s) can be accumulated. At the end of the Transformation, gains “Coreflames” based on the excess points.
When Phainon is the target of any target’s ability, he gains 1 point of “Coreflame.” If the ability’s user is Phainon’s teammate, additionally increases Phainon’s CRIT DMG by for 3 turn(s).

Creation: Bloodthorn Ferry Blast

Blast

Weakness Break: Single: 90 / Blast: 60

Level: 1

Obtains 2 “Scourge”, dealing Physical DMG equal to 125% of █████’s ATK to one designated enemy and Physical DMG equal to 37.5% of █████’s ATK to enemies adjacent to it.

Calamity: Soulscorch Edict

Enhance

Weakness Break: Single: 30 / AoE: 15

Level: 1

Gains “Scourge” by an amount equal to the number of enemy targets present and 1 stack of “Soulscorch,” then causes all enemy targets to immediately take action.
When in the “Soulscorch” state, reduces DMG received by █████ by 75% and gains 1 additional stack of “Soulscorch” after enemy targets attack or take action. Immediately launches a Counter after the aforementioned enemy targets take their actions, dealing Physical DMG to all enemies equal to 20% of █████’s ATK, as well as additionally deals 4 instance(s) of DMG, each instance being Physical DMG equal to 15% of █████’s ATK. Then, “Soulrending Blaze” is dispelled. Each stack of “Soulrending Blaze” increases this Counter’s DMG multiplier by 20% of the original multiplier.
DMG dealt through this ability is considered as Skill DMG. If “Soulrending Blaze” is still active at the start of █████’s extra turn, immediately launches Counter.

Foundation: Stardeath Verdict

Bounce

Weakness Break: Single: 10 / AoE: 60

Level: 1

Dispels all debuffs from this unit, then deals Physical DMG up to 225% of █████’s ATK.
In that, for every 1 point(s) of “Bruise” consumed, deals 4 instance(s) of DMG, each instance being Physical DMG equal to 22.5% of █████’s ATK dealt to one random enemy. When consuming 4 point(s) of “Bruise”, additionally deals Physical DMG equal to 585% of █████’s ATK, and this DMG is evenly distributed to all enemies.

Phainon Abilities Priority

➜

Phainon Traces

Phainon Max Trace Lv Ascension Materials

First Tier

Second Tier (Ascension 2)

Thrid Tier (Ascension 3)

Forth Tier (Ascension 3)

First Tier

Second Ter (Ascension 4)

Thrid Tier (Ascension 5)

Forth Tier (Ascension 5)

First Tier

Second Tier (Ascension 6)

Thrid Tier (Lv. 75)

Thrid Tier (Lv. 80)

Other Traces

First Tier (Lv. 1)

Phainon Eidolon

Phainon Eidolon Level 1

Phainon Eidolon Level 2

Phainon Eidolon Level 3

Phainon Eidolon Level 4

Phainon Eidolon Level 5

Phainon Eidolon Level 6

Phainon Key Eidolons

The % indicates the Dmg Increase of the eidolon relative to the previous eidolon(For E1, it is compared to E0). E1 is SP saver. E2 and E6 provides significant Dmg boost to Phainon.

Mydei's Eidolons Dmg Increase in %

Phainon Build, Best Light Cone & Best Relic

Phainon Best Light Cone

Light Cone Name	Thus Burns the Dawn
Rarity
Light Cone Type	The Destruction

Dispossession

The wearer’s base SPD increases by 12 / 14 / 16 / 18 / 20 . When the wearer deals DMG, ignores 18% / 22.5% / 27% / 31.5% / 36% of the target’s DEF. After the wearer uses Ultimate, obtains “Blazing Sun,” which is removed at the start of the turn. While “Blazing Sun” is in possession, increases the wearer’s DMG dealt by 60% / 78% / 96% / 114% / 132% .

Phainon Light Cones Comparison

The % indicates the performance of the Light Cone relative to the Light Cone with 100%.

Brighter Than the Sun

84.84%
(Stack 2)

Increases the wearer’s CRIT Rate by 18%. When the wearer uses their Basic ATK, they will gain 1 stack of Dragon’s Call, lasting for 2 turns. Each stack of Dragon’s Call increases the wearer’s ATK by 18% and Energy Regeneration Rate by 6%. Dragon’s Call can be stacked up to 2 times.

Flame of Blood, Blaze My Path

76.72%

Increases the wearer’s Max HP by 18% and Incoming Healing by 20%. When using Skill or Ultimate, consumes HP equal to 6% of the wearer’s Max HP and increases the DMG dealt by this attack by 30%. If this effect’s consumed HP is greater than 500, the DMG additionally increases by 30%.
If the current HP is not sufficient, this effect reduces the wearer’s current HP down to 1.

A Trail of Bygone Blood

75.98

Increases the wearer’s CRIT Rate by 12%. The Skill DMG and Ultimate DMG dealt by the wearer increase by 24%.

Dance at Sunset

75.33%

Greatly increases the wearer’s chance of getting attacked and increases CRIT DMG by 36%. After the wearer uses Ultimate, receives 1 stack of Firedance, lasting for 2 turns and stacking up to 2 time(s). Each stack of Firedance increases the DMG dealt by the wearer’s Follow-up ATK by 36%.

On the Fall of an Aeon

74.07%

When the wearer attacks, increases their ATK by 8% 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%, lasting for 2 turn(s).

Flames Afar

74.38%

When the wearer’s cumulative HP loss during one attack exceeds 25% of their Max HP, or if the amount of their own HP consumed at one time is greater than 25% of their Max HP, immediately heals the wearer for 15% of their Max HP, and at the same time, increases the DMG they deal by 25% for 2 turn(s). This effect can only be triggered once every 3 turn(s).

Phainon Best Relics

Main Stats

Sub Stats

Phainon Best Cavern Relics

The % indicates the performance of the Cavern Relics relative to the Cavern Relics with 100%.

Wavestrider Captain

100%

2-Piece: Increases CRIT DMG by 16%.

4-Piece: 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% for 1 turn(s).

Scholar Lost in Erudition

- %

2-Piece: Increases CRIT Rate by 8%.

4-Piece: Increases DMG dealt by Skill and Ultimate by 20%. After using Ultimate, additionally increases the DMG dealt by the next Skill by 25%.

Champion of Streetwise Boxing

2-Piece: Increases Physical DMG by 10%.

4-Piece: After the wearer attacks or is hit, their ATK increases by 5% for the rest of the battle. This effect can stack up to 5 time(s).

Phainon Best Planar Ornament

The % indicates the performance of the Planar Ornament relative to the Cavern Relics with 100%.

Arcadia of Woven Dreams

100%

2-Piece : 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%/12%, up to a maximum of 4/3 stacks.

Rutilant Arena

- %

2-Piece : Increases the wearer’s CRIT Rate by 8%. When the wearer’s current CRIT Rate reaches 70% or higher, DMG dealt by Basic ATK and Skill increases by 20%.

Phainon Team Comp

Phainon Premium Best Team

Phainon is a Main DPS in the team. Phainon Main DPS build is used

Phainon
Main DPS

Phainon is a powerful transformation-based character who activates his Ultimate upon accumulating 12 Coreflame, triggering a transformation that inflicts Physical Weakness on all enemies. During this state, all allies retreat off-field, leaving Phainon alone to withstand attacks—each enemy strike prompts her to launch a counterattack. On the final turn of his transformation, Phainon unleashes a devastating attack that deals massive damage to enemies.

Sunday
Support

Sunday’s Ultimate restores Energy to a selected teammate and transforms them, along with their summon, into “The Beatified,” enhancing their CRIT DMG based on Sunday’s own CRIT DMG. Additionally, Sunday’s skill allows one ally and their summon to act immediately, boosting their damage output in the process.

Robin
Support

Robin uses the ultimate to enter the “Concerto state”, and all allies immediately take action. During “Concerto state”, all allies’ ATK is increased based on Robin’s ATK. Following each attack by allies, Robin inflicts extra physical damage on a single target.

Sparkle
Support

Sparkle can both recover skill points for allies and increase their maximum skill point capacity.
To use Sparkle’s ultimate ability, allies must have already used some of their skill points to avoid exceeding their maximum capacity. The skill of Sparkle increase ally’s CRIT DMG and and advance ally’s action.

Phainon Team Comp

Phainon + Cerydra Best Team

Phainon is a Main DPS in the team. Phainon Main DPS build is used

Phainon
Main DPS

Cerydra
Support

Cerydra’s Skill grants “Military Merit” to an ally, accumulating Charge to unlock “Peerage,” which boosts their Skill CRIT DMG, increases All-Type RES PEN, and triggers Coup de Main for additional effects. Her Ultimate gains Charge and deals AoE Wind DMG, prioritizing granting “Military Merit” to the first-position ally if none have it. Through her Talent, allies with “Military Merit” gain ATK based on Cerydra’s stats and trigger bonus Wind DMG after using attacks.

Robin
Support

Sunday
Support

Phainon Ascension Material

Phainon Lv
Ascension Materials

Level: 0

All Games

Honkai Star Rail Guide

Phainon Build Guide

Last updated: April 18, 2026 1:59 PM

Phainon Story

Phainon Stats at Lv. 80

Phainon Abilities

Phainon Abilities Priority

Phainon Traces

Phainon Max Trace Lv Ascension Materials

Phainon Eidolon

Phainon Key Eidolons

Mydei's Eidolons Dmg Increase in %

Phainon Build, Best Light Cone & Best Relic

Phainon Best Light Cone

Phainon Light Cones Comparison

Phainon Best Relics

Phainon Team Comp

Phainon Premium Best Team

Phainon Team Comp

Phainon + Cerydra Best Team

Phainon Ascension Material

Phainon Lv Ascension Materials

Phainon Lv
Ascension Materials