Castorice Guide in Honkai: Star Rail – Strong & F2P-Friendly Builds!
Today in this Castorice Guide in Honkai Star Rail, I'm gonna check out all the details and complex mechanics of Castorice. From how her energy source fills up to the best team compositions. You can deal massive damage with her, but to do that, you gotta know Castorice's gameplay well and understand what you need to do.

Introducing Castorice in Honkai Star Rail
The first thing we're covering in this Castorice Guide in Honkai Star Rail is the character herself. She's the first Quantum element character from the Remembrance path, with the highest HP in the game. The priority for leveling up Castorice's abilities is:
- Skill
- Talent
- Ultimate
- Talent
- Basic Attack
You can basically skip the Basic Attack.
How Newbud works
The most important part we're checking out in this Castorice Guide in Honkai Star Rail is understanding the Newbud energy source and how it works. You can fill Newbud in two ways:
- When your teammates lose HP, you gain Newbud.
- When your teammates are healed by Contained Dark Tide up to a certain amount, you gain Newbud.
When you manage to fully fill Newbud, you can use your Ultimate to summon the Memosprite Netherwing and create the Lost Netherland zone, which reduces enemy resistance.
How to charge Newbud quickly through HP
Castorice's Skill deals damage by consuming your teammates' HP and also charges Newbud. When you summon Netherwing, the Skill is enhanced, consuming more HP but also healing Netherwing in return. It's very important to manage this cycle carefully, because carelessness can deal heavy damage to your team without any benefit.
Best ways to use Netherwing
In this Castorice Guide in Honkai Star Rail, I suggest two ways to use Netherwing:
- Use Breath Scorches the Shadow repeatedly to deal heavy damage with Netherwing.
- Keep Netherwing on the field and heal it so you can use its ability more often.
Which method you choose depends on how much Newbud you can generate. When Netherwing loses all its HP or stays on the field for three full turns, it disappears and activates the Wings Sweep the Ruins ability, dealing heavy damage to multiple enemies while also healing your entire team.
Best Light Cone and Relic Set for Castorice
Castorice's signature Light Cone is Make Farewells More Beautiful. Given her high HP and ability to ignore enemy defense, it's the best option for her. If you don't have it, you can use Victory In a Blink, which is still pretty decent.
In this Castorice Guide in Honkai Star Rail, the best relic set I can suggest is Poet of Mourning Collapse, a 4-piece set. I recommend this set because you can get the full Critical bonus without needing extra speed.
Castorice Guide in Honkai Star Rail: Best teammates
When you're playing with Castorice, it's very important who your teammates are. What support or healer you use makes a big difference. Here are the best teammates I can recommend:
- Ruan Mei: A buffer who can even affect Netherwing.
- Tribbie: With a permanent bonus and high HP, she's a good choice for your team.
- Gallagher and Luocha: Because they heal while attacking, they're great for charging Newbud.
- Sunday: A good choice, but you need to plan and strategize around using him.
- Pela: Works well with the signature Light Cone when enemy defense is lowered.
One thing to keep in mind: you shouldn't use healers like Fu Xuan or those who create shields, because they can't compensate for the HP loss you need.
What team compositions are good for Castorice?
Here are my suggestions for team compositions:
- For Dual Carry teams: Castorice, Evernight, Cyrene/Tribbie, Hyacine
- For Hyper teams: Castorice, Trailblazer (Remembrance), Tribbie, Hyacine
Summary of this Castorice Guide in Honkai Star Rail
If I wanna sum up the info from this Castorice Guide in Honkai Star Rail, I'd say that if you want to play with Castorice, you're dealing with high complexity and equally high rewards. You need to carefully manage your team and have a good strategy. I hope this guide has helped you play better with Castorice. Follow us for more Games Guides.

