Honkai Star Rail: Castorice Build Guide
This guide will show you the best build for Castorice in Honkai: Star Rail.
Castorice is the newest 5-star unit to join the Honkai: Star Rail roster. She follows the Path of Remembrance and is part of the Quantum element, making her the first Quantum Remembrance unit in the game. In this guide we’ll give a brief overview of what Castorice does and how you can build her.
Table of Contents
Castorice Overview
 |
Name | Castorice |
| Rarity | 5-star | |
| Element | Quantum | |
| Path | Remembrance | |
| VA | Saito Chiwa (JP) | |
| Stats for Level 80 | ||
| HP | 1630 | |
| ATK | 524 | |
| DEF | 485 | |
| Speed | 95 | |
Castorice is a 5-star Quantum unit following the Path of Remembrance. She is a powerful DPS unit that lays waste to enemies with the help of her Memosprite, the Netherwing. Most of Castorice’s damage comes from her Ultimate, which summons Netherwing on the field and allows him to deal a ton of damage that scales with Castorice’s MAX HP. Generally, Castorice is a simple unit to use. You won’t ever have to use her Basic Attack, and you will mostly rely on her Ultimate and Skill to deal damage, with most of the damage coming from Netherwing’s attacks. The important thing to note about Castorice is that you want to stack as much HP on her as possible.
Castorice Best Light Cones
| Rank | Light Cone | Effect |
| 1 |  Make Farewells More Beautiful |
Increases the wearer's Max HP by 30%. When the wearer or their memosprite loses HP during their own turn, the wearer gains "Death Flower." "Death Flower" allows the wearer and their memosprite to ignore 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%. This effect can only trigger up to 1 time, and the trigger count resets every time the wearer uses Ultimate. |
| 2 |  Sweat Now, Cry Less |
Increases the wearer's CRIT Rate by 12%. When the wearer's memosprite is on the field, increases the DMG dealt by the wearer and their memosprite by 24%. |
| FREE TO PLAY | ||
| 3 |  Post-Op Conversation |
USED FOR HP STAT. EFFECT WILL NOT APPLYON CASTORICE! |
As far as light cones are concerned, the best choice for Castorice is her signature LC, the [Make Farewells More Beautiful]. This light cone not only boosts Castorice’s MAX HP by a ton, but it also reduces enemies’ defenses, making it a powerhouse of a weapon. Apart from the [Make Farewells More Beautiful], you can also use Sweat Now, Cry Less, or any other light cone that has a high base HP.
Castorice Best Relics
| Relic Set | |
 |
|
| Poet of Mourning Collapse x4 | |
| Main Stats | |
| Body | Feet |
| CRIT DMG% | HP% |
| Substat priority | |
| CRIT Rate = CRIT DMG > HP% | |
| Planetary Set | |
 |
|
| Bone Collection's Serene Demesne x2 | |
| Main Stats | |
| Phanar Sphere | Link Rope |
| HP% | HP% |
| Substat priority | |
| CRIT Rate = CRIT DMG > HP% | |
For relics, you generally want to use the [Poet of Mourning Collapse] relic set, combined with two pieces of the [Bone Collection's Serene Demesne] planetary set to get the most out of Castorice’s damage.
Skill Priority
| Skill Priority | ||
| Netherwing Skill > Netherwing Talent > Ultimate > Talent > Skill > Basic Attack | ||
| Major Trace Priority | ||
| A2 > A6 > A4 |
Lastly, for skills, you first want to focus on Netherwing’s skill and talent, followed by Castorice’s ultimate and talent, then skill, and finally basic attack.
