Increases DMG dealt by the wearer by 20%/25%/30%/35%/40%. The wearer also deals an extra 20%/25%/30%/35%/40% of DMG to enemies whose current HP percentage is equal to or higher than the wearer’s current HP percentage.
Honkai Star Rail A Secret Vow Guide: Introduction
Honkai Star Rail A Secret Vow is more than just a weapon—it’s a promise of unyielding strength. As a 4-star Light Cone for the Path of Destruction, it embodies the relentless will of those who fight without hesitation. With its powerful DMG-boosting ability, this Light Cone grants its wielder an advantage over enemies who stand on equal or stronger footing. For warriors who embrace risk and thrive in battle’s chaos, A Secret Vow is a perfect ally, turning every fight into a display of unstoppable force.
At the heart of Honkai Star Rail A Secret Vow lies its defining skill, “Spare No Effort.” This ability increases the wearer’s overall DMG, with an additional boost against enemies whose HP percentage is equal to or higher than the wielder’s own. This mechanic rewards aggressive playstyles, making it ideal for characters who either take frequent hits or deliberately lower their HP for greater power. At Superimposition 1, both DMG increases sit at 20%, and as it ranks up, its effectiveness only grows, making it a top-tier choice among 4-star options.
But Honkai Star Rail A Secret Vow isn’t just about stats—it carries a deeper meaning. The story behind this Light Cone speaks of a boy who meticulously maintains his gloves, concealing the wounds beneath. This symbolism mirrors the Destruction path itself—power through struggle, strength forged in pain. It’s a Light Cone for fighters who refuse to break, whose determination drives them forward no matter how many times they fall.
For characters like Blade, Arlan, Clara, Jingliu, and others, Honkai Star Rail A Secret Vow serves as a formidable choice, especially when fully superimposed, where it can even surpass some premium Light Cones in effectiveness. Whether you’re looking to maximize your Destruction units or seeking a reliable DMG boost for a frontline warrior, A Secret Vow proves itself as a weapon of both power and resilience. If you believe in battling with unwavering resolve, then this Light Cone is one worth wielding.
Light Cone Ability
The Light Cone Ability of Honkai Star Rail A Secret Vow is called “Spare No Effort.” This ability provides two main benefits to the wearer, but it only works if the character equipping “A Secret Vow” follows the Path of Destruction.
A Secret Vow Superimpose Levels
Superimposition LevelDMG IncreaseExtra DMG to Enemies with Equal or Higher HPLevel 120%20%Level 225%25%Level 330%30%Level 435%35%Level 540%40%The first effect of this ability is a direct increase in the DMG dealt by the wearer, enhancing their overall offensive power. Additionally, the wearer deals extra DMG to enemies whose current HP percentage is equal to or higher than their own. This makes Honkai Star Rail A Secret Vow particularly effective in battles against high-health enemies, allowing the user to maintain an advantage even when facing tougher opponents.
The exact DMG increase varies based on the superimposition level of the Light Cone. At Level 1, it provides a 20% boost to DMG and an additional 20% DMG against enemies with equal or higher HP. This bonus increases with each superimposition level, reaching 40% at Level 5. These stacking DMG increases make Honkai Star Rail A Secret Vow a strong and scalable option, ensuring that its wearer remains a formidable force in combat.
This ability makes Honkai Star Rail A Secret Vow particularly useful for Destruction characters who are frequently attacked or have self-inflicted HP reduction mechanics. Characters who thrive in high-risk situations can take full advantage of both the consistent DMG boost and the extra damage against healthier enemies, making this Light Cone an excellent choice for maximizing offensive potential.
A Secret Vow Stats
Lv.1482112201848346303141417840463208115506122751536076034219070909409227801058476264Honkai Star Rail A Secret Vow stands as a formidable 4-star Light Cone for Destruction characters, offering a strong balance of offense and strategic advantage. With its consistent DMG increase and bonus damage against high-HP enemies, it empowers aggressive playstyles, rewarding those who fight fearlessly.
Beyond its ability, Honkai Star Rail A Secret Vow boasts solid base stats, ensuring a well-rounded boost to HP, ATK, and DEF at every level. At level 80, it provides 1,058 HP, 476 ATK, and 264 DEF, making it a strong and reliable option even in the late game. Whether paired with Blade, Arlan, Clara, or other Destruction units, this Light Cone remains a top-tier choice for those seeking consistent, high-powered damage output.
With its scaling potential through superimposition, Honkai Star Rail A Secret Vow only gets stronger over time. Whether you’re optimizing an existing unit or looking for a dependable Light Cone to enhance your team, its ability to turn HP manipulation into an offensive advantage makes it a standout pick. If your battle philosophy is to strike harder and overpower your foes, then A Secret Vow is a Light Cone worth wielding.
Best Characters to Use the Light Cone
The best characters to use the Honkai Star Rail A Secret Vow Light Cone are those who follow the Path of Destruction. The Light Cone’s ability, “Spare No Effort,” is specifically designed for characters of this Path, enhancing their offensive capabilities in battle.
The recommended characters for Honkai Star Rail A Secret Vow include Arlan, Blade, Clara, Imbibitor Lunae, Jingliu, Xueyi, and Misha. Additionally, Yunli and Firefly are potential users since they also belong to the Destruction path and could benefit from its effects.
Best Characters to Use the Light ConeArlanArlan’s kit revolves around sacrificing his own HP to boost his damage output. Since Honkai Star Rail A Secret Vow increases DMG and provides an additional boost against enemies with higher HP, it synergizes perfectly with Arlan’s low-HP playstyle.Blade
Blade converts HP loss into damage, making him a top user of Honkai Star Rail A Secret Vow. When fully superimposed, this Light Cone is considered his second-best option, even surpassing On the Fall of an Aeon (S5) in raw damage potential.Clara
Clara excels in counterattacks and tanking hits, often getting attacked due to her mechanics. Since she frequently fights against high-HP enemies, Honkai Star Rail A Secret Vow ensures that her counters and follow-up attacks hit even harder.Imbibitor LunaeImbibitor Lunae consumes skill points for enhanced Basic Attacks, which scale heavily with ATK and DMG bonuses. The flat DMG increase from Honkai Star Rail A Secret Vow helps him deal more consistent burst damage, especially in longer fights.Jingliu
Jingliu’s HP-draining state makes her an ideal user of Honkai Star Rail A Secret Vow. Since she loses HP to enter Spectral Transmigration, she frequently has lower HP than her enemies, maximizing the Light Cone’s extra DMG effect.XueyiXueyi benefits from increased DMG bonuses due to her kit’s focus on follow-up attacks and HP-based mechanics. The added DMG boost from Honkai Star Rail A Secret Vow helps strengthen her sustained damage output.Misha
Misha’s HP-draining Ultimate allows him to maintain the HP difference needed to activate Honkai Star Rail A Secret Vow’s extra DMG effect. This makes it a solid budget choice for increasing his damage potential.
The effectiveness of Honkai Star Rail A Secret Vow comes from its ability to increase the wearer’s DMG and provide extra DMG against enemies with an equal or higher HP percentage than the wearer. This makes it particularly well-suited for Destruction characters who frequently take damage or have abilities that reduce their own HP, allowing them to maintain high offensive output even in risky situations.
Additionally, Honkai Star Rail A Secret Vow is regarded as Blade’s second-best Light Cone, especially when fully superimposed. At max level, it can even outperform a Superimposition 5 “On the Fall of an Aeon” in terms of damage potential. This highlights its strength as a competitive choice for Destruction characters looking to maximize their offensive power.
With its potent ability and well-balanced stats, Honkai Star Rail A Secret Vow stands as a formidable choice for Destruction characters. Its capacity to consistently boost damage and punish high-HP enemies makes it an excellent fit for those who thrive in aggressive, high-risk combat scenarios. Whether used by Blade, Arlan, or other Destruction characters, this Light Cone ensures they remain a dominant force on the battlefield.
The versatility of Honkai Star Rail A Secret Vow allows it to enhance both self-sustaining and high-damage playstyles, making it a valuable investment for players looking to strengthen their roster. With increasing power through superimposition, it remains a relevant and powerful option even as the game introduces new content.
For those seeking a reliable and effective Light Cone that amplifies raw offensive potential, Honkai Star Rail A Secret Vow is an excellent choice. Whether you’re pushing through tough fights or optimizing your damage output, this Light Cone is a steadfast companion for any Destruction character ready to spare no effort in battle.
Is A Secret Vow Worth it?
A Secret Vow is worth it for certain Destruction characters due to its strong synergy with their playstyle and mechanics.
One of the key reasons is its damage increase. The Light Cone’s ability, “Spare No Effort,” provides a consistent DMG boost, starting at 20% at Superimposition 1 and increasing to 40% at Superimposition 5. This makes it a valuable asset for any damage-dealing Destruction character looking for a reliable source of extra damage.
Additionally, Honkai Star Rail A Secret Vow grants bonus DMG against enemies with equal or higher HP percentage than the wearer. This effect is particularly useful at the beginning of battles, especially against bosses and elite enemies, allowing for stronger initial bursts of damage. The Light Cone is particularly well-suited for Destruction characters who frequently take damage or have abilities that reduce their own HP, such as Arlan, Blade, Clara, Imbibitor Lunae, Jingliu, Xueyi, and Misha.
Notably, Honkai Star Rail A Secret Vow is considered Blade’s second-best Light Cone when fully superimposed, even surpassing an S5 “On the Fall of an Aeon” in damage potential. Given its strong passive effects and decent base stats, it remains a top-tier 4-star choice for Destruction characters, making it a worthy investment for players looking to enhance their damage output.
How to Obtain A Secret Vow
You can obtain the A Secret Vow Light Cone through several methods in Honkai: Star Rail.
Pulling from Any Banner: A Secret Vow is available in all Warp Banners, including:
Stellar Warp (the standard, unlimited banner)
Departure Warp (the beginner banner, available until 50 warps are made)
Brilliant Fixation (the limited Light Cone event banner)
Tailored Fate, Coalesced Truths, and Indelible Coterie
All Character Event Warps
All Light Cone Event Warps
Featured in Event Warps: A Secret Vow has been featured with a boosted drop rate in select Brilliant Fixation (Light Cone banner) and Bygone Reminiscence (rerun banner) events.
It was recently featured during Version 3.1 Phase 2, from March 19 to April 8, 2025 (UTC-5), alongside the 5-star Destruction Light Cone “Flame of Blood, Blaze My Path”.
During the same period, it also appeared in the Bygone Reminiscence Banner, alongside the 5-star Abundance Light Cone “Night of Fright”, as well as the 4-star Light Cones “Perfect Timing” (Abundance) and “Memories of the Past” (Harmony).
Previous rate-up appearances for A Secret Vow include:
- July 19 – August 9, 2023
- December 27, 2023 – January 17, 2024
- May 29 – June 18, 2024
- August 21 – September 9, 2024
In summary, A Secret Vow is always available in standard banners, but its drop rate increases significantly during select Light Cone event banners. Keep an eye out for future Brilliant Fixation or Bygone Reminiscence banners for a better chance of obtaining it!
Ascension Materials
LevelAscension Materials20 ➔ 30Silvermane Badge ×5,Credit ×4,00030 ➔ 40Shattered Blade ×3,
Silvermane Badge ×10,
Credit ×8,00040 ➔ 50Lifeless Blade ×3,
Silvermane Insignia ×6,
Credit ×16,00050 ➔ 60Lifeless Blade ×6,
Silvermane Insignia ×9,
Credit ×40,00060 ➔ 70Worldbreaker Blade ×4,
Silvermane Medal ×5,
Credit ×80,00070 ➔ 80Worldbreaker Blade ×8,
Silvermane Medal ×7,
Credit ×160,000
Honkai Star Rail A Secret Vow is a powerful 4-star Light Cone for Destruction path characters, offering a consistent DMG boost and additional damage against enemies with higher HP. Its synergy with characters who frequently take damage or manage their HP strategically makes it a valuable option, especially for those like Blade, Arlan, and Clara.
With solid base stats and strong performance at higher superimposition levels, Honkai Star Rail A Secret Vow remains one of the best free-to-obtain Light Cones for Destruction characters. Its accessibility across multiple Warp banners ensures that players have ample opportunities to acquire and upgrade it.
Whether you are looking to enhance your Destruction character’s offensive potential or seeking an alternative to 5-star Light Cones, Honkai Star Rail A Secret Vow proves to be a reliable and competitive choice. Consider upgrading and superimposing it to maximize its effectiveness in battle.
Conclusion
In conclusion, A Secret Vow stands out as a powerful and reliable 4-star Light Cone for Destruction characters in Honkai Star Rail. Its passive ability, “Spare No Effort,” grants a substantial DMG boost and an additional DMG bonus against enemies with higher HP percentages. This dual effect makes it particularly valuable for characters who frequently take damage or have abilities that fluctuate their HP, such as Arlan, Blade, Clara, Imbibitor Lunae, Jingliu, Xueyi, and Misha. These characters can fully capitalize on its mechanics, ensuring consistent and enhanced damage output in battle.
One of the strongest arguments for using A Secret Vow is its effectiveness at higher superimposition levels. When fully superimposed, it becomes Blade’s second-best Light Cone option, even surpassing a Superimposition 5 On the Fall of an Aeon in certain situations. This demonstrates its high potential, making it a strong alternative to 5-star Light Cones for players looking to maximize their Destruction path units without relying on rarer or premium options.
Acquiring A Secret Vow is relatively accessible since it can be obtained from any Warp banner, including Stellar Warp, Departure Warp, and various limited-time event banners. Additionally, it has been featured with boosted drop rates in Brilliant Fixation and Bygone Reminiscence Event Warps, making it easier for players to obtain and upgrade through future event reruns. Keeping an eye on these banners presents a great opportunity to secure multiple copies for superimposition.
Ultimately, A Secret Vow is a worthwhile investment for any player focusing on Destruction path characters. Its ability to provide a consistent DMG increase, combined with its synergy with HP-manipulating units, makes it a highly effective Light Cone. Whether you are looking to optimize your team’s performance or seeking a strong alternative to 5-star options, A Secret Vow proves to be one of the best 4-star choices in Honkai Star Rail.
