Castorice Build
Castorice is a 5★ Quantum character on the Path of Remembrance in Honkai: Star Rail. Below are the character's stats, skills and Eidolons — plus a pity calculator if you plan to pull.
Building Castorice — just follow the numbers
Ranking & buildright on this page
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Plan materialsCastorice pre-selected
3Should you pull?based on your jades
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Build a teamready-made comps
Castorice is a monster HP-scaling AoE main DPS, sitting around T0 in nearly every mode. Pull if you want an easy-to-play, self-fueling carry that clears both Memory of Chaos and Pure Fiction. Skip if your DPS slots are full or you lack a strong healer.
Sub-stat priority: CRIT DMG > CRIT Rate > HP%
Tribbie
Cyrene
Hyacine
March 7th
Pela
Gallagher
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Deals Quantum DMG equal to 70% of Castorice's Max HP to one designated enemy.
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Consumes 30% of all allies' current HP. Deals Quantum DMG equal to 63% of Castorice's Max HP to one designated enemy and Quantum DMG equal to 38% of Castorice's Max HP to adjacent targets. If the current HP is insufficient, reduces the current HP down to 1. If Netherwing is on the battlefield, the Skill becomes "Boneclaw, Doomdrake's Embrace" instead.
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Summons the memosprite Netherwing and advances its action by 100%. At the same time, deploys the Territory "Lost Netherland," which decreases all enemies' All-Type RES by 25%. If Castorice has the DMG Boost effect from her Talent, then this effect spreads to Netherwing. Netherwing has an initial SPD of 165 and a set Max HP equal to 100% of max "Newbud." After Netherwing experiences 3 turns or when its HP is 0, it disappears and dispels the Territory "Lost Netherland."
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The maximum limit of "Newbud" is related to the levels of all characters on the battlefield. For every 1 point of HP lost by all allies, Castorice gains 1 point of "Newbud." When "Newbud" reaches its maximum limit, can activate the Ultimate. When allies lose HP, Castorice's and Netherwing's DMG dealt increases by 25%. This effect can stack up to 3 time(s), lasting for 3 turn(s). When Netherwing is on the field, "Newbud" cannot be gained through Talent, and every 1 point of HP lost by all allies (except Netherwing) will be converted to an equal amount of HP for Netherwing.
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Attacks an enemy, and after entering combat, reduces their Toughness of the corresponding Type.
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After using Technique, enters the "Netherveil" state that lasts for 20 seconds. While "Netherveil" is active, enemies are unable to actively approach Castorice. During "Netherveil," active attacks will cause all enemies within range to enter combat. At the same time, summons the memosprite Netherwing, advances its action by 100%, and deploys the Territory "Lost Netherland." Netherwing has its current HP equal to 50% of max "Newbud." After entering battle, consumes 40% of the current HP of all allies (except Netherwing). If Netherwing is not summoned after entering battle, Castorice gains "Newbud" by an amount equal to 30% of max "Newbud."
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Consumes 40% of the current HP of all allies (except Netherwing). Castorice and Netherwing launch Joint ATK on the targets, dealing Quantum DMG equal to 37.5% and 62.5% of Castorice's Max HP to all enemies. If the current HP is insufficient, reduces the current HP down to 1.
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Deals Quantum DMG equal to 56% of Castorice's Max HP to all enemies.
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Launching "Breath Scorches the Shadow" will consume 25% of Netherwing's Max HP to deal Quantum DMG equal to 33.6% of Castorice's Max HP to all enemies. In one attack, "Breath Scorches the Shadow" can be launched repeatedly, with the DMG multiplier increased progressively to 39.2% / 47.6%. After reaching 47.6%, it will not increase further. The DMG Multiplier Boost effect will not decrease before Netherwing disappears. When Netherwing's current HP is equal to or less than 25% of its Max HP, launching this ability will actively reduce HP down to 1, and then trigger the ability effect equal to that of the Talent "Wings Sweep the Ruins."
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When Netherwing is on the field, it acts as backup for allies. When allies take DMG or consume HP, their current HP can be reduced down to a minimum of 1, after which Netherwing will bear the HP loss. But Netherwing consumes HP equal to 500% of the original value. This lasts until Netherwing disappears.
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When Netherwing is summoned, increases DMG dealt by all allies by 10%, lasting for 3 turn(s).
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When Netherwing disappears, deals 6 instance(s) of DMG, with each instance dealing Quantum DMG equal to 56% of Castorice's Max HP to one random enemy. At the same time, restores HP by an amount equal to 8% of Castorice's Max HP plus 1120 for all allies.
After ally targets (excluding Netherwing) receive healing, converts 100% of the healed amount into "Newbud." If Netherwing is on the field, this is converted to Netherwing's HP instead. Each ally target can accumulate a conversion amount up to 12% of the max "Newbud." After any unit takes action, all units reset their accumulated conversion amount.
When Castorice's current HP is higher than or equal to 50% of her Max HP, her SPD increases by 40%. When Netherwing uses "Breath Scorches the Shadow" and deals fatal damage to all enemies on the field or brings them to a point where their HP cannot be reduced further, Netherwing's SPD increases by 100%, lasting for 1 turn.
Each time Netherwing uses "Breath Scorches the Shadow," the DMG dealt increases by 30%. This effect stacks up to 6 time(s) and lasts until the end of this turn.
HP
ATK
DEF
SPD
CRIT Rate
CRIT DMG
What is the best Light Cone for Castorice?
The best Light Cone for Castorice is Make Farewells More Beautiful (top pick). See F2P options in the Light Cones section above.
Is Castorice worth pulling?
Castorice is a monster HP-scaling AoE main DPS, sitting around T0 in nearly every mode. Pull if you want an easy-to-play, self-fueling carry that clears both Memory of Chaos and Pure Fiction. Skip if your DPS slots are full or you lack a strong healer.
What is the best team for Castorice?
Core team: Castorice + Remembrance Trailblazer (memosprite buffer) + Tribbie or Cyrene + Hyacine as healer. Dual-carry adds March 7th as a sub-DPS. Budget line: Pela for def shred plus Gallagher to heal the HP drain.
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3★How to read this build page
Every character build page has these parts: recommended Light Cone/Relic sets and stat table, a Trace/skill leveling order, Eidolon milestones worth considering, and a reference SPD threshold. Read them in that order — gear tells you "what to use", Traces tell you "what to level first", Eidolon tells you "is it worth pulling dupes", SPD tells you "how fast you need to be to keep the rotation on time". The section below explains how to read each part and applies the same way to every character on the site — check the exact numbers in the table above this section, since community sources sometimes differ by a few points.
Why the Light Cone and Relic picks make sense
Most characters have a "signature" Light Cone built for their exact role, plus a few cheaper substitutes from the standard banner or easy-to-get 3-4★ cones. Missing the signature isn't a dead end — most characters keep most of their power with a well-matched substitute, typically losing somewhere between a few percent and roughly a fifth of total damage depending on the setup, per most public comparisons.
- Relic sets (2pc+2pc or 4pc) are picked for the set effect that fits that character's role (single-target DPS, AoE, shield/healing support, Break damage, and so on).
- Main stats per slot (Body/Feet/Sphere/Rope) and substats follow a priority that changes by role: DPS roles usually chase CRIT Rate/CRIT DMG before ATK%; Break-focused roles prioritize Break Effect; support/healing roles often value Effect Hit/RES or Outgoing Healing over pure CRIT.
These weights differ per character and can shift slightly between ranking sources — follow the exact priority table above rather than applying one formula to every role.
Trace/skill leveling order by role (a general guideline, not a fixed rule)
There's no single order that's correct for every character, and community sources sometimes disagree depending on the team the character is used in — but the general pattern by role is:
- DPS: level whichever skill (Skill or Ultimate) carries most of the damage for that character first, with Basic ATK usually last if it isn't the main damage source.
- Support/Buffer: prioritize Traces that boost buff strength or the skill that applies the effect over Basic ATK, since this role's value comes from lifting the team rather than personal damage.
- Healer/Shielder: prioritize the main healing or shield skill first, since that is the reason the team runs this character.
- Break/CC: prioritize whichever skill contributes the most Toughness Damage, since the Break/Weakness Break window is where the team dumps damage.
Major Traces unlock at fixed ascension levels in-game, not by choice — but which one to level first (when resources are limited) should follow the role priority above. Since the exact order can differ between ranking sources, check the specific recommendation in the table above for this character.
Eidolons: how far E0 gets you, and which milestone is worth considering
General rule: most characters at E0 (no duplicates) already handle most content, even 5-star characters. Eidolons are a duplicate-fueled upgrade system — higher levels cost more resources for a smaller power gain, and the actual gain varies a lot per character (some barely change role at E0, others shift how they're played at a specific level). The milestones most often cited by the community tend to sit at E1, E2, or E6 depending on the character — but none of these are required to clear the game's content. Check the Eidolon section in the table above for this character's specific milestone and gain; if sources disagree on how to rate a milestone, trust the in-game effect description over a pre-set percentage number.
How to think about SPD breakpoints
SPD (Speed) controls how often a character acts in the turn order — higher SPD means denser actions, and for some roles (especially support/healing that need to buff or heal before the team gets hit) hitting the right SPD "breakpoint" matters more than the raw SPD number. Values like 101 or 134 SPD are often cited as community-common breakpoints (letting a character act again before or after a specific point in certain team setups) — this is crowd-verified action-gauge math, not an official fixed number the game states for every situation. The right breakpoint also depends on the team and allies' SPD, so treat the SPD suggestion in the table above as a starting point to adjust from, not a mandatory target.
Where to dig deeper
This section only teaches you how to read the page — for deeper comparisons, use the dedicated tools:
- Tier list to see where this character stands against the full roster.
- Teams for full in-game comps with rotation order.
- Relic score to check how your current gear scores against the benchmark.
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