Firefly has finally arrived in Honkai Star Rail as a 5-star Destruction character. She continues to play a vital role in Star Rail’s story, but now she will have an even more notable role to play in your Trailblazer party.
In this ONE Esports guide, we explain the best Firefly build in Honkai Star Rail, covering details like the best light cones, relics, planar ornaments, and team compositions.
Fortunately, Firefly has debuted as one of the most unique and powerful 5-star characters in Star Rail’s history. She’s a self-sustaining DPS unit that emphasizes break damage and is now a part of the new break meta that started with the addition of the Trailblazer Harmony.
Either way, if you want to add Firefly to your HSR party, you have come to the right place.
Best Firefly build: light cones
| FIREFLY LIGHTCONE | LIGHTCONE DESCRIPTION | HOW TO GET |
| Whereabouts Should Dreams Rest | Increases the wearer’s Break Effect by 60%. When the wearer deals Break DMG to an enemy target, inflicts Routed on the enemy, lasting for 2 turn(s). Targets afflicted with Routed receive 24.0% increased Break DMG from the wearer, and their SPD is lowered by 20%. Effects of the similar type cannot be stacked. | Firefly Lightcone Warp |
| On the Fall of an Aeon | Whenever the wearer attacks, their ATK is increased by 8% in this battle. This effect can stack up to 4 time(s). After a character inflicts Weakness Break on an enemy, the wearer’s DMG increases by 12% for 2 turn(s). | Herta’s Store |
| Indelible Promise | Increases the wearer’s Break Effect by 28%. When the wearer uses their Ultimate, increases their CRIT Rate by 15%, lasting for 2 turn(s). | Limited-time event warp |
As mentioned above, Firefly emphasizes on dealing Break damage. Much of her overall damage output scales from her Break Effect, making it the most important attribute for her.
To that end, all the best light cones for Firefly should directly or indirectly bolster her break effect.
The best light cone for Firefly is, unsurprisingly, her signature light cone, Whereabouts Should Dreams Rest. It can give Firefly a massive Break Effect boost while applying a debuff on enemies that bolster Break damage.
On the Fall of an Aeon is a good alternative if you can’t afford Firefly’s signature light cone. It can increase Firefly’s attack while also boosting her damage after breaking an enemy’s toughness.
Indelible Promise can also boost Firefly’s Break Effect, but not to the extent like her signature light cone. It, however, can also increase Firefly’s crit rate, which, unfortunately, isn’t useful to her.
Best Firefly build: relics
| FIREFLY RELICS | RELIC DESCRIPTION |
| Iron Cavalry Against the Scourge | 2-piece effect: Increases Break Effect by 16% 4-piece effect: If the wearer’s Break Effect is 150% or higher, ignores 10% of the enemy target’s DEF when dealing Break DMG to them. When the wearer’s Break Effect is 250% or higher, the Super Break DMG they deal to enemy targets additionally ignores 15% of the targets’ DEF. |
| Thief of Shooting Meteor | 2-piece effect: Increases Break Effect by 16% 4-piece effect: Increases the wearer’s Break Effect by 16%. When the wearer inflicts Weakness Break on an enemy, regenerates 3 Energy. |
Likewise, the best Firefly relics should also boost her Break Effect, and equipping four pieces of either Iron Cavalry Against the Scourge and Thief of Shooting Meteor will get you that.
Iron Cavalry Against the Scourge goes a step beyond just increasing Break Effect. It can ignore the enemy’s defense, more precisely when dealing break and super break damage, and Firefly can benefit massively from that.
Thief of Shooting Meteor can similarly increase Break Effect, but equipping a four-piece set will also regenerate energy on dealing weakness break damage. Since Firefly is an energy-hungry unit, this could be incredibly useful.
Best Firefly build: planar ornaments
| FIREFLY PLANAR ORNAMENTS | PLANAR ORNAMENTS DESCRIPTION |
| Taila: Kingdom of Banditry | 2-piece bonus: Increases the wearer’s Break Effect by 16%. When the wearer’s SPD reaches 145 or higher, the wearer’s Break Effect increases by an extra 20%. |
| Forge of the Kalpagni Lantern | 2-piece bonus: Increases 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). |
Taila: Kingdom of Banditry can increase the Break Effect by 36%, which is surprisingly good. Forge of the Kalpagni Lantern, on the other hand, can increase speed and up to 40% Break Effect if you deal damage to an enemy weak to Fire, which, in the case of Firefly, is always.
Best Firefly team composition
It shouldn’t come as a surprise, but the best Firefly team would include units that boost her Break Effect, Break Damage, and Speed. With the addition of Firefly, you can finally build a break team that’s meta and well-suited to tackle endgame activities like Pure Fiction and Memory Chaos.
We have explained the best Firefly team compositions in a separate guide, covering both premium and free-to-play friendly teams, including units such as the Trailblazer Harmony and Ruan Mei.
That sums up our Firefly build in Honkai Star Rail.
READ MORE: Who is Firefly in Honkai Star Rail?
