Honkai Star Rail Firefly build guide: Relics, Light Cones, teams, Traces priority, and materials

Firefly in Honkai Star Rail (Image via HoYoverse)
Firefly in Honkai Star Rail (Image via HoYoverse)

As the Stellaron Hunter in a mechanical suit is one of the most anticipated characters, players may be wondering about the best Firefly builds in Honkai Star Rail. She is the first 5-star Destruction character wielding the Fire element in the game and is an excellent DPS for single-target and AOE situations.

This article discusses the best Firefly build that players can use in Honkai Star Rail.


Honkai Star Rail Firefly build guide

Firefly in Honkai Star Rail specializes in dealing Break DMG to enemies, and as such, you should build stats and equip items accordingly. The following sections will cover all the major aspects of her best build.

Trace priority for Firefly

Firefly Traces (Image via HoYoverse)
Firefly Traces (Image via HoYoverse)

Considering Firefly's Ultimate is the most important part of her gameplay, it is recommended to upgrade it first. Here is the priority order for all her Traces:

  • Combat Traces: Ultimate > Skill > Talent > Basic Attacks
  • Bonus Abilities: Module β: Autoreactive Armor > Δ Order: Meteoric Incineration > Module γ: Core Overload

Best Relic sets and Planar Ornaments for Firefly

The best HSR builds are incomplete without the Relic and Planar Ornament sets. For Firefly’s Relic sets, there are multiple options that you can choose from. However, the best one is the 4-piece Iron Cavalry Against Scourge Relic set released in version 2.3.

Watchmaker, Master of Dream Machinations Relic set (Image via HoYoverse)
Watchmaker, Master of Dream Machinations Relic set (Image via HoYoverse)

Let's look at all Relic sets for Firefly build and their advantages:

  • 4-piece Iron Cavalry Against Scourge: The 4-piece Relic set boosts the user’s Break Effect and ignores the adversary’s DEF when inflicting Break damage.
  • 2-piece Watchmaker, Master of Dream Machinations + 2-piece Thief of Shooting Meteor: Both 2-piece set effects boost the wearer’s Break Effect and are an excellent choice for Firefly considering her attacks scale off the particular stat.
Talia: Kingdom of Banditry Planar Ornament set (Image via HoYoverse)
Talia: Kingdom of Banditry Planar Ornament set (Image via HoYoverse)

As for the Planar Ornament set, the following are the best ones:

  • Forge of the Kalpagni Lantern: This set is the best option for Firefly as it boosts the user’s Break Effect when they attack an enemy with Fire Weakness.
  • Talia: Kingdom of Banditry: This is another viable set that boosts the wearer’s Break Effect when their SPD is 145 or higher.

When acquiring the Relic and Planar Ornament pieces for the best Firefly build, go for the following main stats:

  • Body: ATK%
  • Boot: SPD
  • Sphere: ATK%
  • Rope: Break Effect

As for the sub-stats, here are the ones to prioritize:

  • Break Effect
  • ATK%
  • SPD
  • Flat ATK

Best Light Cones for Firefly

When aiming for the best Firefly build, you also need to look for the best Light Cones for her. Similar to other limited 5-star units, Firefly’s signature Light Cone, Whereabouts Should Dreams Rest, is the best choice for her. However several others can also serve as decent alternatives.

Whereabouts Should Dreams Rest (Image via HoYoverse)
Whereabouts Should Dreams Rest (Image via HoYoverse)

Here are the recommended Light Cones for the best Firefly build in HSR:

  • Whereabouts Should Dreams Rest: This is Firefly's signature 5-star Light Cone and the best choice for her. It dovetails with her kit perfectly and is capable of buffing her Break DMG significantly.
  • On the Fall of an Aeon: This is one of the best F2P options for Firefly as this Light Cone can be obtained from Herta Shop. It is capable of increasing the wielder's attack and boosting their damage.
  • Indelible Promise: This is another great 4-star Light Cone for her which can increase Break DMG. Additionally, it can also buff Crit Rate after using Ultimate.

Best teams for Firefly

Firefly can be paired up with several in-game characters to form powerful team compositions. The following are the best ones you can use in your gameplay:

  • Firefly, Ruan Mei, Imaginary MC, Gallagher
  • Firefly, Asta, Imaginary MC, Gallagher
  • Firefly, Ruan Mei, Imaginary MC, Aventurine
  • Firefly, Ruan Mei, Imaginary MC, Huohuo
  • Firefly, Ruan Mei, Boothill, Gallagher
  • Firefly, Ruan Mei, Pela, Gallagher

Firefly ascension materials

To max ascend Firefly in Honkai Star Rail, you will need to gather the following items:

  • X65 – Raging Heart
  • x16 – Travel Encounters
  • X9 – Adventure Log
  • x287 – Traveler’s Guide
  • x56 – Tatters of Thought
  • x71 – Fragments of Impression
  • x73 – Shards of Desires
  • x18 – Borisin Teeth
  • x69 – Lupitoxin Sawteeth
  • x139 – Moon Madness Fang
  • x12 – Lost Echo of the Shard Wish
  • x8 – Tracks of Destiny

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Edited by Ritoban "Veloxi" Paul
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