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Castorice Honkai: Star Rail: Build, Team, HSR, Materials, and Weapons

Here's the complete build for Castorice in Honkai Star Rail for those of you who have this character!

Games | 17 October

2025-10-17T17:22:33.000Z

Castorice is one of the newest characters in Honkai: Star Rail. This character possesses the Quantum element and the Path of Remembrance. She boasts excellent offensive abilities, focusing on HP and Crit Damage.

For those of you who managed to acquire Castorice yesterday and are curious about her build, I'll share the complete build. Curious? Check out the discussion below!

Castorice in Honkai: Star Rail

Castorice is one of the newest five-star characters in Honkai: Star Rail, possessing the Quantum element and following the Path of Remembrance. She is known as a mysterious figure from Aidonia, a member of the Chrysos Heirs, and is nicknamed the "Goddess of Death." This nickname is not without reason, as Castorice is cursed with the Touch of Death ability, which causes living creatures she touches to wither or die. Although cold and aloof, Castorice is actually a tragic character, struggling against a curse that has plagued her for a long time.

In battle, Castorice stands out as a character who relies on her HP to deliver deadly attacks. The more HP he has, the more damage he can inflict on enemies. His main skill summons an entity called Netherwing, a shadowy creature that attacks enemies and inflicts debuffs to lower their defenses. Castorice's fighting style focuses not only on offensive power but also provides protection for his teammates through a unique passive effect that can prevent them from dying under certain circumstances.

Castorice also possesses a strong character depth within the story. He is depicted as a figure caught between life and death, constantly trying to find meaning in his existence in a world that rejects him. This inner conflict is a compelling force, enriching the narrative of Honkai: Star Rail and adding an emotional layer to the Trailblazers' journey. With his presence, Castorice not only enhances the gameplay but also expands the scope of the game's dark and philosophical themes.

Castorice Build

To optimally build Castorice in Honkai: Star Rail, players should focus on increasing his HP, CRIT Rate, and CRIT DMG. Since most of his skills scale from Max HP, increasing these attributes will directly impact his attack power. The recommended primary Relics for Castorice are sets that provide bonus HP and Quantum DMG, allowing him to maximize his attack potential without sacrificing his durability. With this combination, he can act as a deadly DPS while remaining durable on the battlefield.

For the Cavern Relic, sets like Longevous Disciple or Genius of Brilliant Stars are ideal choices depending on the player's playstyle. Longevous Disciple emphasizes increasing HP and CRIT Rate when HP drops, perfect for Castorice, who often sacrifices some of his health to attack. Meanwhile, Genius of Brilliant Stars increases Quantum DMG and penetrates some enemy defenses, making it a superior choice for focusing on maximum damage output. Players can adjust their priorities according to their team's needs and desired fighting style.

For the Planar Ornament, sets like Broken Keel or Rutilant Arena can be perfect complements to his build. Broken Keel strengthens the team's overall defense while increasing Castorice's CRIT DMG, while Rutilant Arena strengthens his main attack when his CRIT Rate reaches a certain threshold. This combination provides a balance of durability and offensive power, making Castorice effective in a variety of combat scenarios, both against bosses and endgame enemies like Memory of Chaos.

Castorice Team

The best team for Castorice typically focuses on providing support through energy regeneration, HP boosts, and reducing enemy resistances. As a main DPS, Castorice benefits greatly from being accompanied by characters like Huohuo or Luocha, who can keep the team's HP stable without disrupting its attack rhythm. Furthermore, Silver Wolf's presence is very effective at reducing the enemy's Quantum RES, ensuring Castorice's attacks deliver maximum damage. For additional support, Acheron or Pela can also be solid choices, as they provide powerful debuffs that enhance Castorice's offensive capabilities.

For players looking to build a more defensive team, a combination of Castorice, Fu Xuan, Gallagher, and Sparkle can be a balanced choice. Fu Xuan maintains HP stability and reduces damage taken by the team, while Sparkle increases energy regeneration and speeds up Castorice's turn, allowing him to attack more frequently. With the full support of these characters, Castorice can serve as the team's powerhouse. He can rely on his large HP to attack relentlessly.

HSR Castorice

Castorice is a captivating figure in the world of Honkai: Star Rail, not only for his immense power but also for his mysterious presence. He is known as a character with the ability to control Quantum powers, which are closely related to life and death. A curse that causes his touch to bring destruction makes Castorice a tragic figure who is both terrifying and lovable. His calm and elegant appearance hides a storm of emotions within, making him a character full of depth and a symbol of the struggle against an unchangeable fate.

In combat, Castorice displays a playstyle that focuses on balancing risk with immense power. He sacrifices part of his HP to unleash powerful attacks and debuffs that can temporarily paralyze enemies. With the ability to summon shadow entities that enhance Quantum attacks, Castorice can control the battlefield with precision. The combination of visual design, dark backstory, and unique gameplay mechanics make Castorice one of the most prominent characters in the Honkai: Star Rail roster, both narratively and strategically.

Castorice Materials

To maximize Castorice's potential in Honkai: Star Rail, players will need various materials related to the Quantum element and the Destruction path. Key materials include items derived from the Quantum domain, such as Void Cast Iron or Rift Crystal, which are used to level up its basic abilities. Additionally, players will need Lost Echo of the Shared Dream as a crucial material for Ascension, as well as the Traveler's Guide and Refined Aether for character leveling. These materials can be obtained through Simulated Universe, Stagnant Shadow, and daily missions that provide Quantum resources.

To enhance its Trace, Castorice requires advanced materials such as Destroyer's Final Road or Regret of Infinite Ochema, which are typically obtained from high-level bosses or weekly domains. Players should also prepare a substantial amount of Credits and Traveler's Insight to support its overall stats and skill upgrades. Since most of Castorice's attacks scale based on HP and CRIT, players are advised to prioritize character leveling, relics, and Trace.

Castorice Weapons

Several weapons and Light Cones are suitable for Castorice. The best Light Cones for Castorice are undoubtedly those from the Destruction path, which favors an aggressive, HP-based fighting style. A five-star Light Cone like "I Shall Rest Beneath the Stars" is a top choice, as it increases HP while granting bonus CRIT DMG when the user's HP is low. This effect aligns perfectly with Castorice's mechanic of sacrificing some of his health to boost attacks. Another alternative is "On the Fall of an Aeon," which increases ATK every time Castorice attacks and deals significant additional damage after Weakness Breaking an enemy.

For players who don't yet have a premium Light Cone, four-star options like "A Secret Vow" or "Nowhere to Run" can be solid choices. "A Secret Vow" increases damage against enemies with higher HP, while "Nowhere to Run" provides a small healing effect after defeating an enemy and helps maintain Castorice's HP balance during long fights. If players want to focus on a more defensive build without sacrificing offensive power, "The Moles Welcome You" is also worth considering for its consistent ATK bonus. All of these options keep Castorice effective in a variety of team compositions, whether as a main DPS or a support damage dealer.

Overall, Castorice is an easily optimized character with high flexibility in various team compositions. Focusing on increasing HP and CRIT allows him to consistently deal damage without relying too much on external buffs. With the right build and materials, he can be one of the most reliable Quantum DPS in Honkai: Star Rail, for both new and veteran players looking to strengthen their attack lines.

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