Fei Best Build Guide: Cards, Teams, Setup | Chaos Zero Nightmare

Fei arrives on the Global Server on July 8, 2026, and she is already looking like one of those “small brain at first, galaxy brain later” DPS units. This Chaos Zero Nightmare Fei build guide breaks down what actually matters for her: how to build around her carry role, which cards are worth chasing, what to remove, and which setups make her feel smooth instead of clunky.

Overview

Fei is a high-ceiling Void Ranger main DPS built for players who enjoy fast deck cycling and combo-style damage. Her role is not just to hit hard once, but to keep pressure through repeated actions, efficient card access, and strong burst conversion after setup. Compared with simpler DPS units, she is more dependent on deck quality, card removal, and the right support pieces.

In team building, Fei works best as the central carry, with teammates helping her draw faster, generate AP, maintain buffs, or improve consistency. Once her deck is refined, she becomes a very explosive carry with strong scaling in longer fights.

 

Core Mechanic: Flame Dance & Advent

Flame Dance and Advent are the two systems that hold Fei’s kit together.

• Exorcism Stance is the starting point of her engine. It creates Flame Waltz cards in the Draw Pile and makes active card draw generate Advent.

• Flame Waltz is her repeatable damage layer. Flame Dance triggers an extra attack every 3 stacks, so Fei’s damage comes from frequent follow-up hits instead of only raw card multipliers.

• Advent is her payoff resource. Each active draw builds stacks, and at 8 stacks it gives Fei her main burst card, Falling Ninth Heaven, which then spends those stacks when played.

Basic Rotation Logic: Build Flame Dance x3 → trigger Flame Dance → gain extra draw → build Advent → generate Falling Ninth Heaven → convert the setup into damage.

Core Takeaway: Fei’s strength is not just “draw more, hit more.” Her kit links draw, Flame Dance triggers, Advent stacking, and burst payoff into one self-contained engine, so her ceiling depends heavily on card flow and how smoothly she keeps that chain moving.

 

Skills & Card

Ego Skill: Azure Sky

Gain Advent 8.

For 2 turns, at the start of each turn, gain Advent 8.

The next Falling Ninth Heaven has its total damage increased by 100%.

This EGO skill defines Fei’s burst window rather than her basic engine. Its value is in timing: you want support buffs, AP planning, and card access ready before committing, so Falling Ninth Heaven lands as the centerpiece of the turn instead of just another payoff card.

 

Epiphany Cards

Exorcising Momentum

[Start of Battle / Unique] Except for the 5 cards drawn at the start of the turn, whenever you draw cards, gain Advent 1. Generate 8 Flame Waltz cards in the Draw Pile. Their damage +50%.	[Start of Battle / Unique] Except for the 5 cards drawn at the start of the turn, whenever you draw cards, gain Advent 1. Generate 8 Flame Waltz cards in the Draw Pile. At the start of each turn, draw 1 Flame Waltz.	[Start of Battle / Unique] Except for the 5 cards drawn at the start of the turn, whenever you draw cards, gain Advent 1. Generate 8 Flame Waltz cards in the Draw Pile. Draw 2.	[Start of Battle / Unique] Except for the 5 cards drawn at the start of the turn, whenever you draw cards, gain Advent 1. Generate 7 Flame Waltz cards in the Draw Pile. When Flame Dance triggers, launch an additional 100% attack against the enemy.	[Start of Battle / Unique] Except for the 5 cards drawn at the start of the turn, whenever you draw cards, gain Advent 1. Generate 6 Flame Waltz: Heavenward Question cards in the Draw Pile.

Recommended Pick: E1

E1 is the safest and most generally valuable choice for Fei. It keeps the full 8 Flame Waltz setup while directly increasing their damage by 50%, so it improves Fei’s main repeatable damage layer without changing her rotation or making the deck less stable. Compared with extra draw or special variants, E1 is easier to use and gives consistent value in almost every run.

 

Solo Dance

Cost 0 / Skill Draw 3. Discard all drawn cards whose cost is 1 or higher.	Cost 0 / Skill Draw 2 of Fei’s own cards whose cost is 0.	Cost 1 / Skill Activate 3 Flame Waltz cards from the Draw Pile against the enemy. For each card activated this way, gain Advent 2.	Cost 0 / Skill Draw 1. If the drawn card is one of Fei’s own cards with cost 2 or lower, activate it, then draw 2.	Cost 0 / Skill Draw 1 card with cost X. Change those cards’ cost from X to X+1. This change is restored after use.

Recommended Pick: E2

E2 is recommended because it turns Dance Shift into a targeted search tool for Fei’s key 0-cost cards: Solo Dance and Rain Bell. Instead of relying on normal draw RNG, it helps Fei find the exact cards that keep her engine moving—Solo Dance for better card flow and Rain Bell for Flame Dance access. This makes her Flame Dance / Advent chain much smoother and more consistent.

 

Rain Bell

Cost 0 / Skill Gain Flame Dance 1. Chain: Draw 2 Flame Waltz cards.	Cost 0 / Skill Gain Flame Dance 2. Chain: The next 2 times Flame Dance is triggered, gain Flame Dance 2.	Cost 1 / Skill For each Flame Waltz in the Graveyard, gain Flame Dance 1.	Cost 0 / Skill Gain Flame Dance 2. At the start of the turn, move this card to your hand.	Cost 0 / Skill Gain Flame Dance 1. Chain: The next triggered effect has its X increased by 2.

Recommended Pick: E1

E1 is recommended because it gives Fei the cleanest card-flow value. It gains Flame Dance 1 and draws 2 Flame Waltz cards, which effectively cycles through 3 cards in practice, since reaching Flame Dance 3 naturally lines up with another draw trigger. It also keeps the card at 0 cost, so it improves Fei’s Flame Dance engine without adding AP pressure.

 

Burning Plain

Cost X / Attack Deal 153% damage X+1 times. Draw X.	Cost X / Attack [Unique] Deal 102% damage X+1 times. For each hit, activate 1 Flame Waltz from the Graveyard against the enemy.	Cost X / Attack Deal 153% damage X+1 times. For each hit, the next Falling Ninth Heaven has its total damage increased by 50%, up to 500%.	Cost X / Skill Draw X. Gain Flame Dance 2X. Gain Advent X.	Cost 2 / Enhanced [Unique] The number of Flame Dance damage instances increases by 1.

Recommended Pick: E2

E2 is recommended because it turns Wildfire into Fei’s strongest Graveyard payoff. Fei naturally sends many Flame Waltz cards into the Graveyard while cycling, and E2 converts each Wildfire hit into another Melody activation. Since the hit count scales with X+1, higher AP investment directly means more Graveyard triggers

 

Generated Cards

Flame Waltz	Falling Ninth heaven
Cost 0 / Attack Deal 70% damage. Gain Flame Dance 1. When this card triggers Flame Dance, draw 1.	Cost 0 / Attack [Vaporize / Consume] Deal 100% damage ×3.

These are Fei’s core generated payoff cards. Flame Dance Melody keeps her engine alive by feeding Flame Dance and extending card flow, while Falling Ninth Heaven is the burst outlet that converts Advent setup into real damage.

 

Card Pick & Removal Advice

For standard Chaos / Save Data building, trim Fei’s basic cards aggressively. Basic cards can usually be removed without much hesitation, with basic Defense cards being the first priority. Fei wants a cleaner deck so she can find Solo Dance and Rain Bell more reliably.

For the first Fei save build, prioritize copying 2–3 Solo Dance cards first, since this is her most universal search tool for Flame Dance Melody and other Fei draw pieces. After that, copy one extra Rain Bell to smooth out Flame Dance stacking and Melody access.

In Sortie Mode, prioritize drafting 2–3 Wildfire cards instead. Since Sortie runs start fresh and rely more on in-run drafting, Wildfire gives Fei a stronger payoff once Solo Dance and Rain Bell have already built the draw and Flame Dance engine. Its X-cost design also lets it scale with available AP and convert the setup into burst value.

 

Best Setup

Best Memory Fragments

Executioner's Tool	Cursed Corpse	Black Wing
+25% Critical Damage.	Increases damage dealt to target inflicted with Agony by 10%	+12% Attack.
Crit Rate	ATK% / Void DMG Bonus	ATK%
Sub-stat: ATK% = Crit Rate > ATK = Crit DMG

This 2+2+2 setup fits Fei because she does not have a perfect 4-piece set right now, so stacking efficient 2-piece bonuses is cleaner.

Executioner’s Tool gives +25% Critical Damage, which works well once Fei has enough Crit Rate; it also benefits attack cards and extra attacks. Black Wing gives simple ATK +12%, making it a stable all-purpose damage boost. Cursed Corpse is strong only when the team can keep Agony on the target, so it is best with Agony support or Agony-related Epiphany effects.

 

Best Equipment

Weapon – Foggy Crystal Ball	Armor – Fairy King's Crown	Accessory – Heart of the Jewel

This setup fits Fei because it buffs the exact parts of her kit that matter most: 0-cost attacks, crit consistency, and X-cost payoff cards.

Foggy Crystal Ball is the key piece. It increases damage for 0-cost Attack cards, which directly benefits Fei’s generated Flame Dance Melody and Falling Ninth Heaven damage package. Fairy King’s Crown adds Critical Chance, helping Fei’s many small hits convert into stable damage instead of relying only on burst rolls.

Heart of the Jewel is mainly valuable because Fei uses X-cost cards, especially Wildfire. Since it improves X-cost card effects by +1, it raises the payoff of AP-scaling turns and makes Wildfire-based setups stronger.

 

Best Team Comps

Fei	Veronica	Rei

This team works because Fei needs heavy card flow to turn active draws into Advent and keep Flame Dance Melody moving. Veronica supplies premium draw through Repose, while Rei adds strong generic buffs, Morale access, and extra draw / deck thinning. It is a stable Fei hyper-carry shell with smoother setup and payoff.

Fei	Hugo	Mika

This version leans harder into damage tempo. Fei’s frequent low-cost Attack cards help trigger Hugo’s extra-attack game plan, while Mika covers the team’s AP and healing needs through Wave and AP-generating heals. That matters because Fei also wants AP for Wildfire, making Mika’s battery role very practical.

 

Conclusion

Fei is all about making the deck lighter, faster, and meaner. Once Solo Dance, Rain Bell, and Wildfire start lining up, her damage jumps from “pretty good” to “wait, what just happened?” Clean up the basics, keep the engine moving, and she can absolutely carry long fights.

For players getting ready for her banner, LDShop is also a handy place to top up Chaos Zero Nightmare with better prices and quick delivery before Fei arrives.