Castorice Profile, Skills, Traces and Eidolons

Introductions

Castorice is a 5★ character with the Quantum element who follows the Path of Remembrance.
Aidonia, the snowy land that respects and worships death, has already sunken into sweet slumber.
O Castorice, daughter of the River of Souls, the Chrysos Heir in search of the Coreflame of "Death," set forth! Guard the lament of the souls in this world, and embrace the solitude of destiny.
— Life and death is a journey. When a butterfly rests on that dead branch, the withered will be reborn again.

Skills

Basic ATK

Lament, Nethersea's Ripple

Single Target

Lv. 6

Energy gain: -

Break: Main: 10.0

Deals Quantum DMG equal to 50.0% of Castorice's Max HP to one designated enemy.

Skill

Silence, Wraithfly's Caress

Blast

Lv. 10

Energy gain: -

Break: Main: 20.0 / AoE: 10.0

Consumes 30.0% of all allies' current HP. Deals Quantum DMG equal to 50.0% of Castorice's Max HP to one designated enemy and Quantum DMG equal to 30.0% 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.

Skill

Enhanced

Boneclaw, Doomdrake's Embrace

AoE

Lv. 10

Energy gain: -

Break: Adjacent: 20.0

Consumes 40.0% of the current HP of all allies (except Netherwing). Castorice and Netherwing launch Joint ATK on the targets, dealing Quantum DMG equal to 30.0% and 50.0% of Castorice's Max HP to all enemies.
If the current HP is insufficient, reduces the current HP down to 1.

Ultimate

Doomshriek, Dawn's Chime

Summon | energy cost

Lv. 10

Energy gain: -

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 20.0%. 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."

Talent

Desolation Across Palms

Enhance

Lv. 10

Energy gain: -

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 20.0%. 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.

Technique

Wail, Death's Herald

Technique

Energy gain: -

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 50.0% of max "Newbud." After entering battle, consumes 40.0% 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 30.0% of max "Newbud."

Memosprite Skills

Memosprite Skill

Claw Splits the Veil

AoE

Lv. 6

Energy gain: -

Break: Adjacent: 10.0

Deals Quantum DMG equal to 40.0% of Castorice's Max HP to all enemies.

Memosprite Skill

Breath Scorches the Shadow

AoE

Lv. 6

Energy gain: -

Break: Adjacent: 10.0

Launching "Breath Scorches the Shadow" will consume 25.0% of Netherwing's Max HP to deal Quantum DMG equal to 24.0% 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 28.0% / 34.0%. After reaching 34.0%, 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 25.0% 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."

Memosprite Talent

Mooncocoon Shrouds the Form

Support

Lv. 6

Energy gain: -

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.

Memosprite Talent

Roar Rumbles the Realm

Support

Lv. 6

Energy gain: -

When Netherwing is summoned, increases DMG dealt by all allies by 10.0%, lasting for 3 turn(s).

Memosprite Talent

Wings Sweep the Ruins

Bounce

Lv. 6

Energy gain: -

Break: Main: 5.0

When Netherwing disappears, deals 6 instance(s) of DMG, with each instance dealing Quantum DMG equal to 40.0% of Castorice's Max HP to one random enemy. At the same time, restores HP by an amount equal to 6.0% of Castorice's Max HP plus 800 for all allies.

Memosprite Skill

Wings Sweep the Ruins

Bounce

Lv. 6

Energy gain: -

Break: Main: 5.0

Consumes all HP and deals 6 instance(s) of DMG, with each instance dealing Quantum DMG equal to 40.0% of Castorice's Max HP to one random enemy. At the same time, restores HP by an amount equal to 6.0% of Castorice's Max HP plus 800 for all allies.

Major Traces

Contained Dark Tide

Major trace

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 12.0% of the max "Newbud." After any unit takes action, all units reset their accumulated conversion amount.

Inverted Torch

Major trace

When Castorice's current HP is higher than or equal to 50.0% of her Max HP, her SPD increases by 40.0%. 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.

Where The West Wind Dwells

Major trace

Each time Netherwing uses "Breath Scorches the Shadow," the DMG dealt increases by 30.0%. This effect stacks up to 6 time(s) and lasts until the end of this turn.

Minor Traces

CRIT Rate

+18.7%

Quantum DMG Boost

+14.4%

CRIT DMG

+13.3%

Eidolons

Snowbound Maiden, Memory to Tomb

Eidolon 1

When the enemy target's current HP is 80.0%/50.0% of Max HP or lower, the DMG dealt to it by "Boneclaw, Doomdrake's Embrace," "Claw Splits the Veil," "Breath Scorches the Shadow," and "Wings Sweep the Ruins" is 120.0%/140.0% of the original DMG respectively.

Crown on Wings of Bloom

Eidolon 2

After summoning the memosprite Netherwing, Castorice gains 2 stack(s) of "Ardent Will." "Ardent Will" can stack up to 2 time(s) and can be used to offset the HP cost of Netherwing's Memosprite Skill, "Breath Scorches the Shadow" and advance Castorice's action by 100%. When using the next Enhanced Skill, Castorice gains "Newbud" by an amount equal to 30.0% of max "Newbud."

Pious Pilgrim, Dance in Doom

Eidolon 3

Ultimate Lv. +2, up to a maximum of Lv. 15.
Basic ATK Lv. +1, up to a maximum of Lv. 10.
Memosprite Talent Lv. +1, up to a maximum of Lv. 10.

Rest in Songs of Gloom

Eidolon 4

While Castorice is on the field, all allies' HP restored when receiving healing increases by 20.0%.

Pristine Pages, Prophecy as Plume

Eidolon 5

Skill Lv. +2, up to a maximum of Lv. 15.
Talent Lv. +2, up to a maximum of Lv. 15.
Memosprite Skill Lv. +1, up to a maximum of Lv. 10.

Await for Years to Loom

Eidolon 6

When Castorice or Netherwing deals DMG, increases Quantum RES PEN by 20.0%. During Netherwing's attacks, can reduce enemy Toughness regardless of Weakness Types. When breaking Weaknesses, triggers the Quantum Weakness Break effect. And the number of Bounces for Netherwing's Talent "Wings Sweep the Ruins" additionally increases by 3.

Stats and Ascension Materials

Lv. 1

Base Stats

222

ATK

DEF

SPD

Ascension Materials

Credits

308000

Ethereal Omen

Echoing Wail

Darkveil Moonlight

Eternal Lament

Castorice Voice Actors

Melody Muze

Saito Chiwa

Ruan Congqing

Lee Serena

Shikhu

Staff Author

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This guide has been written by Shikhu (Discord - Shikhu). A long-time Honkai Star Rail player since launch experiencing everything the game has to offer from building his favourite characters to clearing MoC, PF and AS on the regular.