Honkai: Star Rail: Castorice Build Guide: Light Cones, Relics & Team

Meet Castorice, Honkai: Star Rail's latest 5-star Quantum character on the Path of Remembrance. Her clever mix of summoning mechanics, HP management, and a clutch ally revive makes her a standout pick for any squad, on or off the frontline.

This guide breaks down Castorice's best Light Cones, trace priorities, relics, ornaments, stats, and team comps. Whether you're grinding endgame content or just want to nail her unique playstyle, we've got the tips to make her shine.

 

Castorice Overview

Rarity: 5-star    Element: Quantum    Path: Remembrance

Pros	Cons
Damage and Support Debuff Application HP Manipulation Revive Utility	HP Sacrifice Risk Complex Playstyle

Castorice is a Quantum character who not only dishes out heavy Quantum damage but also boosts team with enemy debuffs and a rare global revive trick. Trailblazers hunting for a bold, game-changing addition—don't sleep on her!

 

Castorice Trace Priority

Leveling up Castorice's traces in the right order is key to maximizing her effectiveness. Given her reliance on Netherwing and her HP-based mechanics, here's the recommended trace priority:

• Memosprite Talent: Prioritize this first, boosts Netherwing's supportive and offensive capabilities, making it a critical follow-up.
• Memosprite Skill: As it enhances Netherwing's performance, the cornerstone of Castorice's kit.
• Talent: Speeds up "Newbud" point generation, enabling more frequent Ultimates.
• Ultimate: Increases the damage and debuff strength of Netherwing's summon, amplifying team-wide impact.
• Skill: Improves the potency of her HP-consuming Quantum attacks for greater damage output.
• Basic Attack: Least essential, as her core strength lies in her skills and Ultimate rather than basic attacks.

Priority: Memosprite Talent > Memosprite Skill > Talent > Ultimate > Skill > Basic ATK

 

Castorice Light Cones

Equipping the right light cone can elevate Castorice’s performance significantly. Here are the top recommendations tailored to her playstyle:

The Best Choice

Make Farewells More Beautiful (5-star)

HP 1270	DEF 397	ATK 529

• Increases the wearer’s Max HP by 30% / 37.5% / 45% / 52.5% / 60% . When the wearer or their memosprite loses HP during their own turn, the wearer gains “Death Flower,” which allows the wearer and their memosprite to ignore 24% / 25.5% / 27% / 28.5% / 30% of the target’s DEF when dealing DMG, lasting for 2 turn(s).
• When the wearer’s memosprite disappears, advances the wearer’s action by 12% / 15% / 18% / 21% / 24% . This effect can only trigger up to 1 time, and the trigger count resets every time the wearer uses Ultimate.

This light cone boosts Energy Regeneration Rate, letting Castorice spam her Ultimate more often. When an ally uses their Ultimate, it also heals the teammate with the lowest HP and increases their ATK—perfect for sustaining her HP-manipulating team while enhancing damage.

Alternatives

Light Cones		Effect
4-Star Sweat Now, Cry Less		Increases the wearer's CRIT DMG by 12% / 15% / 18% / 21% / 24% When the wearer's memosprite uses an ability on any ally target, increases all ally targets' DMG dealt by 8% / 10% / 12% / 14% / 16% , lasting for 3 turn(s).
4-Star Geniuses' Greetings		Increases the wearer's ATK by 16%. After the wearer uses Ultimate, increases the Basic ATK DMG dealt by the wearer and their memosprite by 20%, lasting for 3 turn(s).

These Light Cones are the perfect fit for DPS characters on the Path of Remembrance, like Castorice. It boosts critical stats and damage output, which are essential for maximizing their potential. Plus, you can snag it through the Nameless Honor battle pass, making it a top choice for players looking to elevate their Remembrance characters’ performance.

 

Eidolons vs Light Cones

E1 :

Enhances Castorice’s damage against enemies with 80%/50% HP by 20%+. This is comparable to a Light Cone’s impact. Since Light Cones have a lower pull threshold (80 pity) compared to Eidolons (90 pity), prioritize Light Cones if you don’t plan to pull for E2.

E2 :

Allows Castorice’s Ultimate to immediately grant 100% action advance and restores 30% Ultimate charge upon using her enhanced Skill. For her Netherwing, this adds 2 extra attacks per summon (resets on next summon). E2 boosts overall damage by 50%+ and is a game-changing Eidolon.

Recommended Pull Configurations:

Based on resource allocation, we recommend the following Eidolon/Light Cone combinations:

• 00 (No Eidolons, No Light Cone)
• 01 (No Eidolons, Light Cone)
• 20 (E2, No Light Cone)
• 21 (E2, Light Cone)
• 61 (E2, Light Cone)

Worried about not having enough resources to pull for Light Cones? Come to LDShop and enjoy your discount HSR top up!

 

Castorice Relics, Ornaments & Stats

Relics Sets

Best choice:

Poet of Mourning

The top pick is hands down the Poet of Mourning relic set. It can squeeze every ounce of its power, unlocking its maximum effects to supercharge her performance in battle. This set’s a perfect match for Castorice kit, making her a must-have powerhouse on your team!

• 2-Pc: Increases Quantum DMG by 10%.
• 4-Pc: Decreases the wearer’s SPD by 8%. Before entering battle, if the wearer’s SPD is lower than 110/95, increases the wearer’s CRIT Rate by 20%/32%. This effect applies to the wearer’s memosprite at the same time.

Alternatives:

Relics		Effect
Longevous Disciple		2-Pc: Increases Max HP by 12%. 4-Pc: When the wearer is hit or has their HP consumed by an ally or themselves, their CRIT Rate increases by 8% for 2 turn(s) and up to 2 stacks.
Genius of Brilliant Stars		2-Pc: Increases Quantum DMG by 10% 4-Pc: When the wearer deals DMG to the target enemy, ignores 10% DEF. If the target enemy has Quantum Weakness, the wearer additionally ignores 10% DEF.

These two Relics are also a good choice for Castorice. Longevous Disciple boosts Castorice's HP and increases her CRIT Rate whenever she drains HP, making it ideal for high-risk playstyles. This set maximizes her damage output by synergizing with her HP-consumption abilities.

Genius of Brilliant Stars amplifies Castorice's Quantum Damage and lets her ignore enemy DEF, perfect for high-level content. Note: The 4-piece effect does not apply to her memosprite.

 

Ornaments

Best choice:

Bone Collection’s Serene Demense

• 2-Pc: Increases the wearer's Max HP by 12%. When the wearer's Max HP is 5000 or higher, increases the wearer's and their memosprite's CRIT DMG by 28%.

As for the best Ornaments for Castorice, you can choose between the new upcoming planar ornaments "Bone Collection’s Serene Demense".

Alternatives:

The Wondrous BananAmusement Park

• 2-Pc: Increases the wearer's CRIT DMG by 16%. When a target summoned by the wearer is on the field, CRIT DMG additionally increases by 32%

 

Main/Sub Stats

Body: CRIT DMG (her Minor Trace and relics are already helping a lot with her CRIT Rate)

Feet Main: HP%

Planar Sphere: Quantum DMG or HP%

Link Rope: HP%

Subsidiary Stats: CRIT Rate/DMG > HP%

 

Recommended Stat Values

Stat	Recommended Value
HP％	7000+
CRIT Rate	Try to get 100% during combat
CRIT DMG	+150%

Getting close to 100% CRIT Rate is the ideal goal on Castorice and should be achievable with the recommended Poet set above and CRIT Rate substats.

 

Castorice Teams

Premium Team

Main DPS	Support	Support	Healer
Castorice	Sunday	Tribbie	Gallagher

This team is built around enabling Castorice’s Ultimate by maximizing Newbud accumulation through coordinated healing and skill rotations. Castorice’s Ultimate becomes accessible once Newbud is fully charged, with excess healing from allies directly accelerating this process.

Sunday restores Energy and boosts an ally and their summon’s CRIT DMG with her Ultimate. Tribbie enhances All-Type RES PEN and adds follow-up attacks and damage zones. Gallagher heals, boosts Break DMG, debuffs enemy ATK, and strengthens his offense.

Main DPS: Castorice

Support1 & 2: Tribbie / Remembrance MC / Sunday / Pela

Tribbie boosts allies’ All-Type RES PEN and ramps up enemy damage taken, stacking debuffs that seriously pump up the hypercarry’s damage output.

Pairing Castorice with the Remembrance Trailblazer adds True DMG buffs and Action Advances, letting the hypercarry strike more often and hit harder.

Likewise, teaming her with Sunday—who brings CRIT DMG boosts and Action Advances for both Castorice and her memosprite—cranks the hypercarry’s attack power even higher.

Healer: Gallagher / Luocha

 

F2P Team

Main DPS	Support	Support	Healer
Castorice	RMC	Pela	Gallagher

In this team, the Trailblazer backs Castorice with true damage, crit rate, crit damage. Pela cuts enemy defense, ramping up Castorice’s damage potential. Gallagher keeps the team alive by healing through debuffs, offsetting Castorice’s HP loss from skills and hits. This setup keeps Castorice dishing out damage non-stop.

 

Conclusion

Castorice blending Quantum damage with unparalleled support through her Netherwing summons and global revive ability. By focusing on her trace priorities, equipping optimal light cones selecting the right relics and pairing her with synergistic teammates, you’ll harness her full potential to conquer any challenge the game throws your way.

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