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The Dahlia, Fire Nihility character | Honkai: Star Rail
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The Cremators

The Dahlia Build

Build guide · Honkai: Star Rail

5-star
FireNihilitySub DPS

English voice: Cristina Vee

The best The Dahlia build in Honkai: Star Rail (Version 4.6) is Never Forget Her Flame with Iron Cavalry Against the Scourge. Updated November 5, 2026

AbilitiesTracesMaterialsEidolons
Where these rankings come fromThe light cone order, relic sets and stat priorities on this tab are prydwen.gg’s, measured in play and rephrased. Relative damage figures are ratios against the bottom of each ranking, not absolute numbers, and each one holds only for the superimposition and team its row states. Everything else (base stats, passive text, material totals) is read from the game’s own data.

Light cones

Relics

Iron Cavalry Against the Scourge, Cavern Relic set | Honkai: Star Rail
CoreIron Cavalry Against the Scourge

Best overall option for The Dahlia as she can deal significant Super Break DMG herself especially against Weakness Broken targets.

2PCIncreases Break Effect by 16%.

4PCIf the wearer's Break Effect is 150% or higher, the Break DMG dealt to the enemy target ignores 10% of their DEF. If the wearer's Break Effect is 250% or higher, the Super Break DMG dealt to the enemy target additionally ignores 15% of their DEF.

Planar ornaments

Forge of the Kalpagni Lantern, Planar Ornament set | Honkai: Star Rail
CoreForge of the Kalpagni Lantern

The Dahlia can implant Fire Weakness to activate the set bonus, for 6% SPD and 40% Break Effect. She can also enable any Break DPS to equip this set but they may face downtime issues.

2PCIncreases the wearer's SPD by 6%. When the wearer hits an enemy target that has Fire Weakness, the wearer's Break Effect increases by 40%, lasting for 1 turn(s).

Main stats

Body
HP% / Effect HIT Rate
Feet
Speed
Planar Sphere
HP% / DEF%
Link Rope
Energy Regen Rate / Break Effect

Substat priority

  1. 1SPDBest
  2. 2Break Effect
  3. 3HP%/DEF%
  4. 4Effect RES

Trace priority

  1. #1

    Talent

    Max first

  2. #2

    Ultimate

    Then

  3. #3

    Skill

    Next

  4. #4

    Basic ATK

    Later

Best Eidolons

  1. The Dahlia E1 When a Bud Readies to Bloom, Eidolon | Honkai: Star RailE1
  2. The Dahlia E2 Fresh, Ethereal, and Beloved, Eidolon | Honkai: Star RailE2
  3. The Dahlia E3 Pity Its Petals Thin as Mist, Eidolon | Honkai: Star RailE3
  4. The Dahlia E4 Pity Its Heart Gnawed by Worms, Eidolon | Honkai: Star RailE4
  5. The Dahlia E5 Fallen, Decayed, and Despised, Eidolon | Honkai: Star RailE5
  6. The Dahlia E6 And Yet, Always, Deathly Beautiful, Eidolon | Honkai: Star RailE6
  1. The Dahlia E1 When a Bud Readies to Bloom, Eidolon | Honkai: Star RailE1

    When a Bud Readies to Bloom

    Game text

    The Super Break DMG multiplier provided by Talent to "Dance Partners" now applies to all ally characters, with "Dance Partners" additionally receiving a 40% boost. After "Dance Partners" use an attack, additionally deals the attacked enemy targets a fixed amount of Toughness Reduction equal to 25% of their Max Toughness (minimum 10, maximum 300). This effect can only trigger once per enemy target, and this trigger count resets after the enemy target receives a killing blow.

  2. The Dahlia E2 Fresh, Ethereal, and Beloved, Eidolon | Honkai: Star RailE2

    Fresh, Ethereal, and Beloved

    Game text

    When The Dahlia is on the field, decreases all enemies' All-Type RES by 20%. When an enemy target enters the field, immediately inflicts "Wilt" on them, lasting for 3 turn(s).

  3. The Dahlia E4 Pity Its Heart Gnawed by Worms, Eidolon | Honkai: Star RailE4

    Pity Its Heart Gnawed by Worms

    Game text

    Increases the number of DMG instances dealt by Talent's Follow-Up ATK by 5. Upon its use, the DMG taken by all enemy targets increases by 12%, lasting for 2 turn(s).

  4. The Dahlia E6 And Yet, Always, Deathly Beautiful, Eidolon | Honkai: Star RailE6

    And Yet, Always, Deathly Beautiful

    Game text

    Increases Dance Partners' Break Effect by 150%. When using Talent's Follow-Up ATK, advances the next action of all "Dance Partners" by 20%.

Teams

Mortenax Blade team

Fire · NihilityPlays Nihility partner

He taunts, spends his own HP for a Zone that shreds DEF, and scales on Max HP: a carry that needs a healer more than it needs a second buffer.

  1. Mortenax Blade, Fire Nihility character | Honkai: Star RailMortenax BladeMain DPS
  2. The Dahlia, Fire Nihility character | Honkai: Star RailThe Dahlia, this characterNihility partner
  3. Tribbie, Quantum Harmony character | Honkai: Star RailTribbieHarmony buffer
  4. Hyacine, Wind Remembrance character | Honkai: Star RailHyacineSustain

Firefly team

Fire · BreakStands in for Fugue

A Break Effect carry with two Harmony units that raise Break damage and Weakness Break efficiency, and a sustain that keeps Break uptime rather than adding damage.

  1. Firefly, Fire Destruction character | Honkai: Star RailFireflyMain DPS
  2. Ruan Mei, Ice Harmony character | Honkai: Star RailRuan MeiBreak amplifier
  3. Fugue, Fire Nihility character | Honkai: Star RailFugueWeakness implantor The Dahlia
  4. Lingsha, Fire Abundance character | Honkai: Star RailLingshaSustain · Break

Boothill team

Physical · BreakStands in for Ruan Mei

A single-target Break carry: one Harmony unit raises Break damage, one implants the Weakness he needs, and the sustain is the one that also breaks.

  1. Boothill, Physical The Hunt character | Honkai: Star RailBoothillMain DPS
  2. Ruan Mei, Ice Harmony character | Honkai: Star RailRuan MeiBreak amplifieror The Dahlia
  3. Fugue, Fire Nihility character | Honkai: Star RailFugueWeakness implant
  4. Gallagher, Fire Abundance character | Honkai: Star RailGallagherSustain · Break

Rappa team

Imaginary · BreakStands in for Ruan Mei

Break damage across a whole wave rather than one target, so both Harmony slots go to Break amplification and the sustain adds Break of its own.

  1. Rappa, Imaginary Erudition character | Honkai: Star RailRappaMain DPS
  2. Ruan Mei, Ice Harmony character | Honkai: Star RailRuan MeiBreak amplifieror The Dahlia
  3. Trailblazer (Harmony), Imaginary Harmony character | Honkai: Star RailTrailblazer (Harmony)Break support
  4. Lingsha, Fire Abundance character | Honkai: Star RailLingshaSustain · Break

Himeko team

Fire · BreakStands in for Ruan Mei

Himeko follows up whenever an enemy is Broken, which turns the standard-warp Erudition unit into a Break team’s damage dealer at no pull cost.

  1. Himeko, Fire Erudition character | Honkai: Star RailHimekoMain DPS
  2. Ruan Mei, Ice Harmony character | Honkai: Star RailRuan MeiBreak amplifieror The Dahlia
  3. Trailblazer (Harmony), Imaginary Harmony character | Honkai: Star RailTrailblazer (Harmony)Break support
  4. Gallagher, Fire Abundance character | Honkai: Star RailGallagherSustain · Break

All teams, with every replacement

Honkai: Star Rail 5★ Fire Nihility Sub DPS

The Dahlia build summary

Updated November 5, 2026

Never Forget Her Flame tops the light cone ranking for The Dahlia at S1, ahead of Long Road Leads Home, Lies Dance on the Breeze and Resolution Shines As Pearls of Sweat. That order is prydwen.gg's, measured in play and rephrased here; every row of it sits under Light cones below.

Run Iron Cavalry Against the Scourge on The Dahlia, with Thief of Shooting Meteor and Sacerdos' Relived Ordeal behind it. The planar ornament is Forge of the Kalpagni Lantern. Main stats are HP% / Effect HIT Rate body, Speed feet, HP% / DEF% sphere, Energy Regen Rate / Break Effect rope. Roll substats in the order SPD > Break Effect > HP%/DEF% > Effect RES.

Trace priority is Talent > Ultimate > Skill > Basic ATK. The Ultimate costs 130 energy, which is what an Energy Regeneration Rate target has to clear.

The Dahlia plays Nihility partner in the Mortenax Blade team, alongside Mortenax Blade, Tribbie and Hyacine.

Role
Sub DPS / Support
Best light cone
Never Forget Her Flame
Alternatives
Long Road Leads Home, Lies Dance on the Breeze, Resolution Shines As Pearls of Sweat
Relic set
Iron Cavalry Against the Scourge
Planar ornament
Forge of the Kalpagni Lantern
Main stats
HP% / Effect HIT Rate body, Speed feet, HP% / DEF% sphere, Energy Regen Rate / Break Effect rope
Substat priority
SPD > Break Effect > HP%/DEF% > Effect RES
Trace priority
Talent > Ultimate > Skill > Basic ATK
Best team
Mortenax Blade, The Dahlia, Tribbie, Hyacine
Ultimate energy cost
130 energy
Key ascension material
65× Radiant Prominence
Last updated
November 5, 2026

The Dahlia build FAQ

What is the best Light Cone for The Dahlia?
Along the Passing Shore is the closest fit on the data: it is a 5-star Nihility Light Cone with 635 base ATK at level 80, and its passive acts on ATK. Boundless Choreo is the best 4-star alternative.
Which relic set should The Dahlia use?
Hero of Triumphant Song. Its 2-piece bonus is: Increases ATK by 12%. Its 4-piece bonus is: While the wearer's memosprite is on the field, increases the wearer's SPD by 6%. When the wearer's memosprite attacks, increases the wearer's and memosprite's CRIT DMG by 30%, lasting for 2 turn(s).
Which Planar Ornament should The Dahlia use?
Firmament Frontline: Glamoth. Its 2-piece bonus is: Increases the wearer's ATK by 12%. When the wearer's SPD is equal to or higher than 135/160, the wearer deals 12%/18% more DMG. Planar Ornaments have no 4-piece bonus; the sphere and the rope are the whole set.
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