Rarity★★★PathThe EruditionAbilityEpiphany
After the wearer uses their Skill, additionally regenerates 8/9/10/11/12 Energy. This effect can only be triggered 1 time per turn.

Honkai Star Rail Passkey Guide: Introduction

Honkai Star Rail Passkey is a 3-star Light Cone that follows the Path of Erudition, making it a valuable option for characters specializing in AoE damage and frequent Skill usage. While 3-star Light Cones are often overlooked in favor of their higher-rarity counterparts, Passkey offers a unique advantage through its Energy regeneration effect. This feature allows certain Erudition characters to cycle their Ultimates more efficiently, making it a surprisingly effective choice, especially in the early game or for players lacking higher-rarity alternatives.

Its signature ability, Epiphany, provides 8 Energy after the wearer uses their Skill, ensuring a steady boost to their Ultimate uptime. This effect, which can only trigger once per turn, becomes even stronger as the Light Cone is superimposed. For characters with high Energy costs, this passive can significantly improve their performance, particularly in battles requiring frequent Ultimate usage. Given that Energy generation is crucial for optimizing damage rotations, Honkai Star Rail Passkey’s effect can make a noticeable difference in sustained encounters.

Beyond its passive ability, Honkai Star Rail Passkey comes with average base stats for a 3-star Light Cone, making it a serviceable choice but not one that excels in raw offensive power. However, its true value lies in its synergy with specific characters. Notably, it is considered Serval’s best Light Cone, especially when used alongside The Herta. This pairing allows Serval to unleash her Ultimate more frequently, triggering The Herta’s Ultimate in response, resulting in a highly effective damage loop. Additionally, while it can be used by characters like Jing Yuan and Argenti, it is more of a stopgap solution for them rather than an optimal choice.

Honkai Star Rail Passkey is readily available through any Warp Banner, making it an accessible option for players at all stages of the game. For those looking to maximize its potential, ascending the Light Cone requires 231,000 Credit and a mix of Key of Inspiration, Key of Knowledge, Key of Wisdom, and various Core materials. While it may not replace 4-star or 5-star options, Honkai Star Rail Passkey’s Energy-focused effect makes it a solid pick for any Erudition character needing more frequent Ultimate activation.

Light Cone Ability

The ability of the Honkai Star Rail Passkey Light Cone is called Epiphany and is specifically designed for characters who follow the Path of Erudition. This effect enhances their Energy regeneration, making it easier for them to use their Ultimate abilities more frequently.

Passkey Superimpose Levels

Superimposition LevelEnergy RegeneratedTrigger Limit per TurnLevel 18 EnergyOnce per turnLevel 29 EnergyOnce per turnLevel 310 EnergyOnce per turnLevel 411 EnergyOnce per turnLevel 512 EnergyOnce per turn

The Epiphany ability triggers after the wearer uses their Skill. When this happens, the wearer regenerates additional Energy, helping to shorten the time needed to unleash their Ultimate. At Superimposition Level 1, the wearer regenerates 8 Energy after using their Skill. This amount increases with higher Superimposition levels, reaching 12 Energy at Level 5.

The Epiphany effect can only be triggered once per turn, meaning even if the wearer uses their Skill multiple times, they will not gain additional Energy beyond the set limit. This prevents excessive Energy generation while still providing a consistent and reliable boost for characters who rely on frequent Ultimate use.

This Energy regeneration ability is particularly useful for Erudition characters with high Energy costs for their Ultimate. Honkai Star Rail Passkey is often considered Serval’s best Light Cone when paired with The Herta, as it allows Serval to activate her Ultimate more frequently, indirectly benefiting The Herta’s Ultimate as well. While Passkey can serve as a temporary option for other Erudition characters like Jing Yuan and Argenti, it is generally recommended to replace it with a stronger alternative when available.

Passkey Stats

Lv.133161220129644630220110784032416211550428214153605322661907063631822780740370264

Honkai Star Rail Passkey may be a 3-star Light Cone, but its consistent Energy regeneration makes it a valuable tool for certain Erudition characters, especially those who rely on frequent Ultimate use. While its base stats—maxing out at 740 HP, 370 ATK, and 264 DEF at Level 80—are modest compared to higher-rarity options, its true strength lies in its Epiphany ability. By providing up to 12 Energy per turn at Superimposition Level 5, it ensures smoother combat rotations for characters like Serval, Jing Yuan, and Argenti.

For players seeking a reliable early-to-mid-game Light Cone that enhances Ultimate uptime, Honkai Star Rail Passkey is a solid pick. Though it may eventually be outclassed by higher-rarity alternatives, it remains an accessible and efficient choice, particularly for Serval’s synergy with The Herta. With easy availability through any Warp Banner, it’s worth keeping and upgrading for those in need of a strong, free Energy-boosting Light Cone.

Best Characters to Use the Light Cone

Honkai Star Rail Passkey is a 3-star Light Cone that provides valuable Energy regeneration for Erudition characters. While its base stats are modest, its Epiphany ability ensures that the wearer gains additional Energy after using their Skill, allowing for more frequent Ultimate activations. This makes it an excellent choice for characters who rely on high-cost Ultimates to maximize their damage output.

Certain Erudition characters benefit more from Honkai Star Rail Passkey than others. Serval, in particular, finds it to be her best Light Cone when paired with The Herta, as the increased Energy gain allows her to use her Ultimate more often, triggering additional synergy effects. Meanwhile, Jing Yuan and Argenti can also make use of Passkey as a temporary option to manage their Energy costs, though they will eventually outgrow it in favor of stronger Light Cones.

Honkai Star Rail Passkey’s accessibility through any Warp Banner makes it an easy-to-obtain Light Cone for players looking to boost their Erudition characters’ Energy economy. While it may not compete with higher-rarity options, its unique ability to streamline Ultimate rotations ensures that it remains a useful early-game and budget-friendly choice.

Best Characters to Use the Light ConeServal
Honkai Star Rail Passkey is considered Serval’s best Light Cone when paired with The Herta. The additional Energy regeneration allows Serval to use her Ultimate more frequently, which in turn provides more Energy for The Herta’s Ultimate.Jing Yuan
Honkai Star Rail Passkey can be a temporary Light Cone for Jing Yuan. Its Energy regeneration assists in offsetting his high Ultimate Energy cost, though it is advisable to replace it with a better option like ‘The Seriousness of Breakfast’ when available.Argenti
Similar to Jing Yuan, Argenti can use Honkai Star Rail Passkey temporarily to help manage his Energy needs. However, seeking a superior Light Cone is recommended for optimal performance.

Honkai Star Rail Passkey may be a 3-star Light Cone, but its Energy regeneration effect makes it a useful tool for Erudition characters who rely on frequent Ultimate usage. While its base stats are modest, its ability to boost Ultimate uptime can significantly improve performance in battle, especially for characters like Serval, Jing Yuan, and Argenti.

For players who need a readily available Energy-boosting Light Cone, Honkai Star Rail Passkey provides an efficient and easily obtainable option through any Warp Banner. Whether used as Serval’s best Light Cone in synergy with The Herta or as a temporary choice for high-Energy-cost characters, it offers a solid utility boost that can benefit players at various stages of the game.

While it may eventually be replaced by stronger Light Cones, its Superimposition scaling ensures it remains a relevant pick, particularly in the early-to-mid game. If you’re looking to enhance your Erudition characters’ performance without relying on rarer Light Cones, Honkai Star Rail Passkey is a reliable choice worth considering.

Is Passkey Worth it?

Whether Honkai Star Rail Passkey is worth using depends on the specific situation and the characters in your lineup. Its value is primarily tied to its Energy regeneration effect, which can enhance Ultimate frequency for certain Erudition characters.


For Serval when paired with The Herta, Honkai Star Rail Passkey is considered her best Light Cone. The additional Energy regeneration after Serval uses her Skill allows her to activate her Ultimate more often, which in turn provides more Energy for The Herta’s Ultimate. In this specific setup, Passkey plays a crucial role in maintaining a strong synergy between these two characters.

For other Erudition characters like Jing Yuan and Argenti, Honkai Star Rail Passkey can be a temporary option. If a better Erudition Light Cone is not available, Passkey offers a decent Energy boost, helping high-cost characters reach their Ultimate faster. However, as stronger Light Cones become available, it is generally recommended to replace Passkey with options like “The Seriousness of Breakfast!”, which provides a more well-rounded benefit for damage output and consistency.

As a 3-star Light Cone, Honkai Star Rail Passkey has average base stats, meaning its effectiveness will diminish as players progress and obtain higher-rarity Light Cones. Its primary strength lies in its Epiphany ability, which regenerates 8 to 12 Energy per turn, making it particularly valuable in the early-to-mid game. While it will eventually be outclassed, Passkey remains a solid choice for Serval and a viable short-term solution for other Erudition characters.

How to Obtain Passkey

Honkai Star Rail Passkey is a 3-star Light Cone that belongs to the Path of Erudition. Its primary effect, Epiphany, provides Energy regeneration after the wearer uses their Skill, making it a useful choice for certain Erudition characters who rely on frequent Ultimate usage. Despite being a 3-star Light Cone, it has notable synergies with specific characters, particularly Serval when paired with The Herta.

Honkai Star Rail Passkey can be obtained by pulling it from any Warp Banner in Honkai: Star Rail, making it an easily accessible option for players at any stage of the game. This includes:

All Unlimited and Limited Banners, such as:

Stellar Warp


Departure Warp


Brilliant Fixation


Message From Beyond


Coalesced Truths
Indelible Coterie

Essentially, whenever you use Stellar Jades to perform a Warp on any of the available banners, there is a chance that you will obtain the 3-star Light Cone Honkai Star Rail Passkey. Since 3-star Light Cones drop frequently, players will likely acquire multiple copies, allowing them to increase its Superimposition level and enhance its Energy regeneration effect.

Ascension Materials

To fully maximize Honkai Star Rail Passkey’s potential, players must ascend the Light Cone through multiple upgrade phases. Each ascension increases its base stats, making it more effective in combat. However, this process requires a variety of materials, including different Key and Core items, as well as a significant amount of Credits.

As Honkai Star Rail Passkey progresses through its six ascension phases, the required materials gradually become more difficult to obtain. Lower-tier materials like Extinguished Core and Key of Inspiration are needed early on, while higher-level materials such as Key of Wisdom and Squirming Core are required in the final stages. Credits are also an essential resource, with the total cost reaching 231,000 Credits to fully ascend Passkey.

These materials can be obtained from Calyxes, enemy drops, and in-game events, making it important for players to farm efficiently to ensure smooth progression. While Honkai Star Rail Passkey is a 3-star Light Cone, fully ascending it ensures that it reaches its maximum Energy regeneration potential, especially at higher Superimposition levels.

Below is a breakdown of the specific ascension materials needed at each level to upgrade Honkai Star Rail Passkey to level 80.

LevelAscension Materials20 ➔ 30Extinguished Core ×4,
Credit ×4,00030 ➔ 40Key of Inspiration ×2,
Extinguished Core ×8,
Credit ×8,00040 ➔ 50Key of Knowledge ×2,
Glimmering Core ×4,
Credit ×16,00050 ➔ 60Key of Knowledge ×4,
Glimmering Core ×6,
Credit ×40,00060 ➔ 70Key of Wisdom ×3,
Squirming Core ×3,
Credit ×80,00070 ➔ 80Key of Wisdom ×6,
Squirming Core ×5,
Credit ×160,000

Fully ascending Honkai Star Rail Passkey requires a steady investment of Credits and ascension materials, but the payoff is worthwhile for players looking to maximize its Energy regeneration effect. While it is a 3-star Light Cone, upgrading it to its highest level ensures that it provides the best possible support for Erudition characters who rely on frequent Ultimate usage.

Whether you’re using Honkai Star Rail Passkey as Serval’s best Light Cone in synergy with The Herta or as a temporary option for characters like Jing Yuan and Argenti, ascending it allows you to take full advantage of its Epiphany ability. Since the materials required are relatively easy to farm, fully upgrading Passkey is an accessible and practical choice for players looking to improve their team’s performance.

While higher-rarity Light Cones will eventually surpass it, Honkai Star Rail Passkey remains a valuable tool in the early-to-mid game. If you find yourself pulling multiple copies through Warps, consider fully ascending and superimposing it to maximize its potential before moving on to stronger alternatives.

Conclusion

Passkey stands out as a unique 3-star Light Cone in Honkai: Star Rail, offering valuable Energy regeneration for Erudition characters through its Epiphany ability. While its base stats are modest, its true strength lies in its ability to accelerate Ultimate usage, making it a strong choice for characters who rely on frequent Ultimates to maximize their damage potential. For players in the early-to-mid game, Passkey provides a reliable and easily accessible option to enhance their team’s effectiveness.

Its true value shines in specific team compositions, particularly when Serval is paired with The Herta. In this setup, Honkai Star Rail Passkey allows Serval to use her Ultimate more frequently, which in turn helps generate Energy for The Herta’s Ultimate, creating a powerful synergy. For other Erudition characters like Jing Yuan and Argenti, Passkey serves as a temporary but effective solution, especially if better Light Cones are not yet available. However, as players progress and acquire higher-rarity alternatives, Passkey will eventually be outclassed by stronger 4-star and 5-star Light Cones.

Despite its limitations, Honkai Star Rail Passkey’s accessibility is one of its greatest strengths. Since it can be obtained from any Warp Banner, players will likely acquire multiple copies, allowing them to increase its Superimposition level and further improve its Energy regeneration effect. This makes Passkey a worthwhile investment for new players, as its benefits are noticeable in longer battles where Ultimate uptime is crucial.

Ultimately, Honkai Star Rail Passkey is an excellent choice for Serval and a decent stopgap for other Erudition characters until superior options become available. Its ability to enhance Energy regeneration ensures that it remains useful in certain team setups, even as stronger Light Cones enter the meta. While it may not be a permanent fixture in high-level team compositions, its impact in the early game and its synergy with Serval and The Herta make it a Light Cone worth considering.