Let's talk about what makes Firefly so strong.
Firefly is a limited-time Destruction character with the Fire element, but don't let the word 'Destruction' fool you. Her core mechanics revolve around Weakness Break and Super Break, which simply means she specializes in bullying enemies with weaknesses.
Interestingly, her mechanics are uniquely designed: her Skill consumes 40% of her Max HP (sounds scary, right?), but it regenerates 144 Energy for her Ultimate. Her Ultimate requires 240 Energy, and upon activation, she enters the [Complete Combustion] state—at this point, she's like a completely different person, gaining +60 Speed, +50% Weakness Break Efficiency, and +20% Break Damage.
Even more impressive, her Enhanced Skill can forcibly implant a Fire Weakness on enemies. Imagine an enemy that originally had no Fire Weakness suddenly becoming an easy target—that feeling is truly satisfying.
In combat, her Speed needs to reach over 210 to achieve 4 actions, which corresponds to a base Speed of around 150+ (if you have Ruan Mei, it can be reduced to 140+).
Is E2 worth it? My answer is: Yes!
Based on my tests and data analysis, Firefly's E2, [Heaven-Shattering Purgation], is an absolute game-changer. The effect of this Eidolon is: while in the [Complete Combustion] state, if an Enhanced Basic Attack or Skill defeats an enemy or inflicts Weakness Break on them, you immediately gain an extra turn.
Might not sound like much? In reality, this mechanic is practically a bug in multi-enemy environments. The damage increase can reach 30%-70%, and the satisfaction of continuous triggers is truly indescribable.
E1 is also good, making the Enhanced Skill consume no Skill Points and ignore 15% DEF, providing a stable damage increase of about 9%-10%, mainly optimizing the team's rotation.
As for her Light Cone… honestly, it's not that necessary.
Her signature Light Cone, [Whereabouts Should Dreams Rest], is indeed good, providing 60% Break Effect and a 24% Break DMG Vulnerability independent multiplier. Compared to the free S5 [On the Fall of an Aeon], the damage increase is about 13%-15%.
But here's the thing—On the Fall of an Aeon is more than sufficient as a free Light Cone. Its high ATK can be converted into Break Effect, making it the best alternative. So, her signature Light Cone is a nice-to-have, not a must-have.
Gacha Advice for Different Players
Based on my years of observing player gacha habits, I recommend the following paths:
Pure F2P Players : E0 is enough, really. Firefly has an extremely high floor, and with free teammates, she can handle most content. However, I strongly recommend ensuring you have Ruan Mei first—her boost to Break teams is universal.
Monthly Pass Players : Go straight for E2. It's the most cost-effective investment, requiring about 28,800 Stellar Jades (approximately 2 soft pities).
Low Spenders : E2 + Signature Light Cone makes her complete.
Whales : E6 provides 20% Fire RES PEN, but honestly, only if you really love the character.
Combat Team Compositions and Cultivation Tips
The best F2P team I've tested is: Firefly + Harmony Trailblazer + Ruan Mei + Gallagher.
Harmony Trailblazer provides Super Break mechanics and Break Effect buffs, which is core; Ruan Mei provides DMG Boost, RES PEN, Break Efficiency, and extends Weakness Break duration; Gallagher handles healing and debuff cleansing, and his [Besotted] debuff also increases Break Damage.
For Relics, I recommend the 4-piece [Iron Cavalry Against the Scourge] + 2-piece [Forge of the Kalpagni Lantern] set, with main stats 'SPD, ATK, ATK, Break Effect'.
Her cultivation cost is very friendly—you don't need to farm for Crit stats, just focus on Break Effect and Speed. That's why she's called the 'F2P Queen'.
How does she compare to Boothill?
Many people ask me this question. Simply put:
Firefly's advantage lies in her strong AoE capabilities, high Speed with multiple actions, and ability to implant Fire Weakness, giving her a high floor and good clear efficiency. Boothill focuses more on single-target damage, has higher Toughness damage compensation, and might have a higher ceiling against high-Toughness bosses.
But in terms of beginner-friendliness, Firefly wins hands down.
Some Points to Note
Firefly isn't perfect. She's vulnerable to enemies with locked weaknesses, which limits her implanting ability; E2 might not trigger in pure single-target boss fights; and if her damage isn't enough, there might be output downtime.
However, her Talent has a very practical effect: when her Energy is full, she cleanses negative effects, allowing for emergency cleansing via external Energy regeneration.
Skill Level-Up Priority: Ultimate = Skill > Talent > Basic Attack.
My Final Recommendation
As an editor who has witnessed the rise and fall of countless characters, I believe Firefly is truly a worthwhile investment. She has an excellent floor and a respectable ceiling, and if you lack a Super Break main DPS, she is definitely the best choice.
High return on investment, low cultivation cost, beginner-friendly—such characters are truly rare in limited banners.
E2 is indeed a game-changer, but E0 is already very strong. Decide based on your budget, don't push yourself.
Quick Q&A
Q: I'm a beginner, is Firefly suitable for me? A: Very suitable! Easy to play, low cultivation cost, no need to farm for Crit stats.
Q: Do I have to pull for her signature Light Cone? A: Not necessarily. The signature Light Cone provides a 13%-15% increase, which is a nice bonus, but On the Fall of an Aeon is sufficient.
Q: Can I play Firefly without Ruan Mei? A: Yes, but it's highly recommended to prioritize Ruan Mei, as her boost to Break teams is immense.
Q: How do I choose between E2 and her signature Light Cone? A: Prioritize E2. It's a game-changing Eidolon and offers better value.
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