Honkai Star Rail Castorice Guide

Single Target

Deals Quantum DMG equal to 25% of Castorice’s Max HP to one designated enemy.

Blast

Consumes 30% of all allies’ current HP. Deals Quantum DMG equal to 25% of Castorice’s Max HP to one designated enemy and Quantum DMG equal to 15% of Castorice’s Max HP to adjacent targets. If current HP is insufficient, this ability will reduce HP to 1. If Deathwing is on the battlefield, this Skill becomes “Boneclaw, Doomdrake’s Embrace” instead.

Summon

Summons the memosprite Deathwing and advances its action by 100%. At the same time, creates the Territory “Lost Netherland,” which decreases all enemies’ All-Type RES by 10%. If the DMG Boost effect from Castorice’s Talent is active, the effect is extended to Deathwing. Deathwing has 140 SPD and a set Max HP equal to 100% of max “Newbud.” After Deathwing acts 3 times or when its HP is 0, it disappears and dispels the Territory “Lost Netherland.”

Enhance

Max “Newbud” is based on all characters’ levels on the battlefield. For each point of HP lost by all allies, Castorice gains 1 point of “Newbud.” When “Newbud” reaches its maximum, Castorice’s Ultimate can be used. When allies lose HP, Castorice’s and Netherwing’s DMG dealt increase by 15%. This effect can stack up to 3 times, lasting for 3 turn(s). When Netherwing is on the field, “Newbud” cannot be gained, and HP lost by all allies (except Netherwing) will be converted to an equal amount of HP for Netherwing.

After using Technique, enters the \”Netherveil\” state that lasts for 20 seconds. While \”Netherveil\” is active, enemies are unable to approach Castorice on their own. While in the \”Netherveil\” state, attacking will cause all enemies within range to enter combat. At the same time, summons the memosprite Netherwing and causes it to advance its action by 100%, as well as create its Territory \”Lost Netherland.\” Netherwing starts with current HP equal to 50% of max \”Newbud.\” After entering battle, consumes 40% of all allies’ current HP aside from Netherwing. After entering battle and before summoning Netherwing, Castorice gains \”Newbud\” equal to 30% of maximum \”Newbud.\”

Deals Quantum DMG equal to 15% of Castorice’s Max HP to all enemies.

Wings Sweep the Ruins

Activating “Breath Scorches the Shadow” will consume 25% of Netherwing’s Max HP to deal Quantum DMG equal to 12.0% of Castorice’s Max HP to all enemies. In one attack, this ability can be activated repeatedly, with the DMG multiplier increasing to 14.0% and 17.0%, until Netherwing disappears. The DMG Multiplier Boost effect will not reduce beforehand. When Netherwing’s current HP is ≤ 25% of its Max HP, activating the ability reduces HP to 1 and triggers damage equal to the Talent “Wings Sweep the Ruins.”

When Netherwing is on the field, it acts as backup for allies. When allies take DMG or consume HP, their HP can be reduced to a minimum of 1. Then, Netherwing will consume HP equal to 500% of the original value until it disappears.

When Netherwing is summoned, increases DMG dealt by all allies by 10% for 3 turn(s).

When Netherwing disappears, deals 6 instance(s) of Quantum DMG, with each instance equal to Castorice’s Max HP to random enemies. Simultaneously, restores HP equal to Castorice’s Max HP plus to all allies.

First Tier

While Castorice or Dead Dragon’s respective HP is at 50% or higher, increases their respective SPD by 40%.

Second Tier (Ascension 2)

CRIT DMG + 5.3%

Third Tier (Ascension 3)

CRIT Rate + 4%

First Tier

While Dead Dragon is not on the field, 100% of excess healing for each ally target will restore an equal amount of “Stamen Nova.” While Dead Dragon is on the field, the excess healing will restore an equal amount of HP for Dead Dragon. Each restoration cannot exceed 15% of max “Stamen Nova” / Dead Dragon’s Max HP.

Second Tier (Ascension 4)

Quantum DMG + 4.8%

Third Tier (Ascension 5)

CRIT Rate + 4%

First Tier

When Dead Dragon disappears, restores HP for all allies equal to 10% of Castorice’s Max HP plus 250.

Second Tier (Ascension 6)

CRIT CMG + 8%

Third Tier (Lv. 75)

Quantum DMG + 6.4%

When the enemy target’s current HP is 80%/50% or lower than this unit’s Max HP, the DMG dealt with “Boneclaw, Doomdrake’s Embrace,” “Claw Splits the Veil,” “Breath Scorches the Shadow,” and “Wings Sweep the Ruins” is 120%/140% of the original DMG.

After summoning memosprite Netherwing, Castorice gains 2 stack(s) of “Ardent Will.” A maximum of 2 stacks of “Ardent Will” can be possessed at any given time, and can be used to offset Netherwing’s HP consumption when using Memosprite Skill “Breath Scorches the Shadow” while advancing Castorice’s action by 100%. In the next usage of Enhanced Skill, Castorice gains 30% of maximum “Newbud” points.

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.

While Castorice is on the battlefield, all allies’ Incoming Healing increases by 20% when having their HP restored.

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.

When Castorice or Netherwing deals DMG, increases Quantum RES PEN by 20%. When Netherwing attacks, it can ignore Weakness Type and directly reduce enemy Toughness. When it inflicts Weakness Break, triggers the Quantum Weakness Break effect. Additionally increases the Bounce count for Netherwing’s Talent “Wings Sweep the Ruins” by 3 time(s).