Rei Build: Best Team Comps & Core Cards 

Rei is a 4-star Controller from Chaos Zero Nightmare. She uses the Void attribute and belongs to the Terrascion faction. She works as a damage buffer who amplifies your team's attack cards through temporary but powerful boosts.

Rei Overview in Chaos Zero Nightmare

		Overview
		Type	Controller
		Attribute	Void
		Faction	Terrascion
		Rarity	☆☆☆☆
		Voice Actor (EN)	Voice Actor (JP)
			Kaede Hondo
Gender	Race	Favorite Gift	Birthdate
Female	Human	Dark Material	April 5th

Rei Stats

How to Get Rei in Chaos Zero Nightmare

• Under Construction

Best Team Compositions for Rei

Recommended Team Setup

Position	Character
Main DPS	Rin
Support	Mika
Buffer	Rei

Rei works best when she supports damage dealers who rely on basic attack cards or characters who attack multiple times per turn. Rin serves as the main damage dealer who benefits from Rei's buffs to basic cards and 1-cost attacks. Mika generates AP through her Source of Water card, which keeps the team's action points flowing so Rei can use her buff cards consistently.

Alternative Team Members

Character	Explanation
Kayron	Works well as a main DPS.
Renoa	Can replace Rin as the main DPS.
Mei Lin	Excellent partner for Rei.
Tressa	Can serve as a sub-DPS.
Cassius	Alternative support option.

Best Rei Build and Cards

Core Character Cards

Card Name	AP Cost	Type	Effect	Tags
Strike of Darkness	1	Attack	150% Damage, +150% Basic attack card damage for 1 turn	Lead
Resonating Darkness	1	Upgrade	+40% Damage for Void Cards	-
Snack Time	0	Skill	Select 1 card to Exhaust, Heal 150%, Draw 1	Exhaust
Dark Condensation	1	Skill	Choose 1 Attack Card, +150% Damage for 1 turn	-
Predator's Blade	1	Attack	250% Damage, 2 Morale for 1 turn	-

Essential Team Cards

Card Name	AP Cost	Type	Effect
Source of Water (Mika)	0	Skill	Heal 150%, +1 AP, 1 Wave
Tactical Analysis (Mika)	0	Skill	2 Wave, +50% Healing for 1 turn
Dark Mist Secret Art: Annihilation (Rin)	1	Attack	50% x2 Damage, Dark Mist Blade Art: +2 hits
Dark Mist Secret Art: Black Dance (Rin)	1	Attack	80% Damage, Dark Mist Blade Art: +1 hit per Skill card in hand (Max 5)
Drawing Slash (Rin)	0	Attack	150% Damage, Obtain Dark Cloud Stance, Dark Mist Blade Art: +1 hit

Mika's Source of Water generates the AP needed to use Rei's buff cards. Rin's attack cards gain extra hits through her Dark Mist Blade Art, which makes Rei's damage buffs even more effective since each hit benefits from the boost.

Best Partner

Recommended Partner Choice

Aspect	Details
Partner Name	Nyx
Passive Effect	The assigned combatant's HP and healing increased by 8%. When the assigned combatant Draws for the first time each turn using an ability, +8% Damage dealt by allies for 1 turn.
Ego Skill	Discard up to 3 cards, then Draw +1 cards equal to the number discarded

Alternative Partners

Partner	Passive Effect	Ego Skill
Arwen	The assigned combatant's Defense increased by 8%. At the end of the turn, if an enemy's attack targets this combatant, gain Damage Reduction.	100% Shield, 1 Damage Reduction
Yvonne	The assigned combatant's HP and healing increased by 8%. At the end of battle, heal 4% Health.	Heal 150%, 1 Fortitude

Best Memory Fragments for Rei

The Offering of the Void set boosts Void damage, which helps both Rei's personal damage and her Void teammates. Seth's Scarab provides extra damage to basic cards, which fits well if you're keeping any basic attacks in her deck. Some players prefer combining Tetra's Authority and Healer's Journey for a more support-focused build that emphasizes team survivability.

For main stats, you want Attack% on your Ideal slot, Void Damage% on your Desire slot, and either Attack% or Ego Regen on your Imagination slot. Your substats should focus on Attack%, Attack, Defense, and Health%.

Best Equipment for Rei in CZN

Violet Butterfly's Whip increases damage for 1-cost cards, which covers most of Rei's kit. Chains of Obsession gives shields whenever you use attack cards, adding some survivability. Natural Predator buffs your next attack card when you trigger Ravage. Grey Orb provides damage reduction at the start of battle, while Water Drops of the Goddess preserves AP between turns.

Rei Cards in Chaos Zero Nightmare

Basic Starting Cards

Card Name	AP Cost	Type	Effect	Tags
Dark Blade	1	Attack	100% Damage	-
Material Regeneration	1	Skill	Heal 100%	Heal

Unique Cards

Card Name	AP Cost	Type	Effect	Tags
Predator's Blade	1	Attack	250% Damage, 2 Morale for 1 turn	Morale

Cards with Epiphanies

Card Name	Epiphany 1	Epiphany 2	Epiphany 3	Epiphany 4	Epiphany 5
Strike of Darkness	350% Damage, -20% Damage for 1 turn	Exhaust all Basic cards, +1 hit for each	+80% Basic attack card Damage (Upgrade)	Activate all Basic cards in hand (0 cost, Retain)	-
Resonating Darkness	+60% Damage of 1-cost cards	+40% Damage for Void Cards	+40% Shield, Damage, Healing of 1-cost cards	+40% Damage of 1-cost or below cards	+80% Damage to 1-cost cards for 1 turn (0 cost)
Snack Time	Heal 150%, Draw 2 (Retain)	Select up to 2 cards to Exhaust, Draw that many	From Draw Pile, select up to 1 card to Exhaust, Draw same number	Select 2 cards to Exhaust, Select 1 Void card to Draw	-
Dark Condensation	Choose 1 card, +100% Damage, Shield, Healing for 1 turn	+50% Damage to Void attack cards for 1 turn	Select 1 Attack card, +100% Damage until used	Choose 1 Attack Card, +50% Damage (Upgrade)	-

Ego Skill

Final Shadow deals decent damage while recovering 1 AP. This AP recovery helps you continue your combo or use another buff card right after. Use it when you need extra momentum to finish off an enemy or when you're short on action points for your next turn.

Potential Upgrades

The Basic Card upgrades help if you're keeping some basic cards in your deck or playing with E2 for healing purposes. Otherwise, focus on upgrading Neutral and Unique cards since those cover Rei's main buff cards.

Manifest Ego

The most important Manifest Ego stages are E1 and E2. E1 turns Predator's Blade into a 4 Morale buff (80% increased damage), making it one of the strongest temporary buffs in the game. E2 adds healing whenever Rei uses an attack card, turning her into a hybrid support who can heal while buffing. E6 provides a flat damage increase to all allies, which stacks with all her other buffs.

How to Play Rei in Chaos Zero Nightmare

Rei's job is to boost your main damage dealer's attacks through temporary but powerful buffs. You're looking at which cards your main DPS has in their hand each turn, then deciding which of Rei's buffs will give you the biggest damage increase. The tricky part is figuring out whether it's better to use two buffs on one attack or spread your buffs across multiple attacks.

When the battle starts, you want to get Resonating Darkness active as soon as possible. This card stays active for the entire fight once you play it, giving all your 1-cost cards a permanent damage boost. After that's set up, you're looking to use your other buffs on your strongest attack cards. Strike of Darkness works best when your team uses basic attack cards frequently. If your main DPS relies on basic attacks like Mei Lin or Yuki, this buff turns them into damage machines. Dark Condensation lets you pick any attack card and boost its damage for one turn, which gives you flexibility to respond to whatever's in your hand.

Predator's Blade is your most straightforward buff. It just gives Morale to everyone, which means more damage across the board. If you have E1, this card becomes even better because it grants 4 Morale instead of 2, giving your entire team an 80% damage increase for one turn. You'll usually want to play this right before your main DPS uses their big attacks.

For card removal, you want to get rid of two of Rei's starting cards early on. Most players remove both copies of Dark Blade, but you can also remove one Dark Blade and Material Regeneration instead. The reason you remove these is that Rei's other cards are just more useful. Her buffs provide way more value than a basic attack or heal. However, if you get E2, you might want to keep one Dark Blade around because it triggers your healing effect.

The best Epiphany choices change depending on what your team needs. For Strike of Darkness, Epiphany 4 turns it into a 0-cost card that activates all basic cards in your hand for free. This is amazing if your team uses a lot of basic attacks. Epiphany 1 is also good because it sometimes costs 0 AP and has the Lead tag. For Resonating Darkness, Epiphany 4 is usually your best bet because it buffs cards that cost 1 or less, which covers more cards than the version that only buffs 1-cost cards. For Snack Time, Epiphany 2 is strong because it lets you use the card twice before it exhausts, and it draws two cards at once. For Dark Condensation, Epiphany 4 is excellent because the damage buff stays on the card until you actually use it, so you can buff a card and save it for the perfect moment.

Rei works best with characters who attack frequently or have multi-hit abilities. Each hit from a multi-hit attack benefits from her buffs, so cards that hit 3 or 4 times get way more value from her damage increases.