Rei Character Guide for Chaos Zero Nightmare (CZN) - Detailed evaluation, optimal team builds, recommended partners, cards, stats, Ego Skills, and more!
Table of Contents
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All Characters (Combatants) ListRei - Rating

| Rare | Class | Attribute |
|---|---|---|
![]() | Controller | Void |
Rei is a Void Controller. She has an abundance of buff Cards and can fight while increasing her own damage.
Stats
| Attack | Defense | Health |
|---|---|---|
| 129 | 56 | 74 |
| Crit Chance | Crit Damage | 3.0% | 125.0% |
Rating
| Best Character | Reroll |
|---|---|
(SS>S>A>B) | (SS>S>A>B) |
Rei - Pros and Cons
Abundant Buff Cards
Rei has four Cards that can increase damage. She has many buff Cards that affect allies, making it possible to increase the damage of the entire party.
Has a 0-cost Draw
"Snack Time" is a draw Card that can be activated for 0-cost. As Rei is a buffer who upgrades the party, having a draw Card makes her more consistent.
Low Durability
Rei is a Controller with Heal Cards, but she has a limited number of them. It is difficult to use her in a durability role, so be sure to support her with another character.
Rei - Recommended Team
Renoa Attacker Build
This is a build that uses Renoa as the Attacker. With Rei's 1-cost buff, it's possible to Upgrade the damage of Renoa's bullet.
Best Partner
Nyx is Recommended
| Partner | Detail |
|---|---|
Nyx | - Increases HP and Heal amount - The first time you draw using an ability, ally damage increases - Ego Skill lets you draw Cards equal to the number of Cards you have discard |
Arwen | - Increases HP and Heal amount - Reduces damage based on the number of enemies in an Anticipated Action state - Ego Skill provides Heal + damage reduction |
Alyssa | - Increases defense - Recover HP at the end of battle - Heal + gain Morale with Ego Skill |
Rei is a buffer, so Nyx is recommended as she can increase your allies' damage dealt. Alternatively, you can also use 4-star Partners.
Manifest Ego Priority
| Manifest Ego | Effect |
|---|---|
| 1凸 | The Predator's Blade card increases Morale by 2 for 1 turn |
| 2凸 | When Rei uses an Attack Card, heal for 120%. This effect triggers only once per turn. |
| 3凸 | Increase the level of Potential by +3 for [Upgrade Basic Cards], [Upgrade Neutral Cards], and [Upgrade Unique Cards]. |
| 4凸 | +100% Damage for Final Shadow |
| 5凸 | Increase the level of Potential by +3 for [Upgrade Basic Cards], [Upgrade Neutral Cards], and [Upgrade Unique Cards]. |
| 6凸 | Allie's attack card damage is increased by +20%. |
Rei - All Cards
Starting Cards
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Starting Cards Detail
| Name | Effect |
|---|---|
| Dark Blade | 15 Damage +139% Critical Chance |
| Material Regeneration | Heal 132% |
| Strike of Darkness | [Lead] 132% Damage For 1 turn, +100% Basic attack card Damage |
Strike of Darkness
| Cost | Epiphiny |
|---|---|
| 1 | [Lead] 198% Damage For 1 turn, +150% Basic attack card Damage |
| 1 | 462% Damage For 1 turn, -20% Damage |
| 1 | [Lead] 198% Damage Exhaust all Basic Cards, +1 extra hit for each |
| 1 | [Unique] +80% Basic attack card Damage |
| 0 | [Retain] Activate all Basic cards in Hand |
Unique Cards
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Unique Cards Detail
| Name | Effect |
|---|---|
| Resonating Darkness | [Unique] +40% Damage of cards with cost 1 |
| Snack Time | [Exhaust] Select 1 card(s) from hand to Exhaust Heal 132% Draw 1 |
| Dark Condensation | Choose 1 Attack Card(s) in hand, +100% Damage for 1 turn |
| Predator's Blade | 330% Damage For 1 turn 4 Morale |
Resonating Darkness
| Cost | Epiphiny |
|---|---|
| 1 | [Unique] +60% Damage of cards with cost 1 |
| 1 | [Unique] +40% Damage for Void Card |
| 1 | [Unique] +40% Shield Gain, Damage, and Healing of cards with cost 1 |
| 1 | [Unique] +40% Damage for cards with cost of 1 or below |
| 0 | For 1 turn, +80% Damage to cards with cost 1 |
Snack Time
| Cost | Epiphiny |
|---|---|
| 0 | [Exhaust 2] Select 1 card(s) from hand to Exhaust Heal 198% Draw 1 |
| 0 | [Retain/Exhaust] Heal 198% Draw 2 |
| 0 | [Exhaust] Select up to 2 card(s) from hand to Exhaust, then Draw that many |
| 0 | [Exhaust] From Draw Pile, select up to 1 card(s) to Exhaust, then Draw the same number of cards |
| 0 | [Exhaust] Select 2 card(s) in hand to Exhaust Select 1 Void card(s) to Draw |
Dark Condensation
| Cost | Epiphiny |
|---|---|
| 1 | Choose 1 Attack Card(s) in hand, +150% Damage for 1 turn |
| 1 | Choose 1 card(s) in hand, +100% its Damage, Shield gain, and Healing for 1 turn |
| 1 | For 1 turn, +50% Damage to Void attack cards |
| 1 | Select 1 attack card(s), +100% Damage until used |
| 1 | Choose 1 Attack Card(s) from hand, +50% Damage |
Ego Skill and Potential
Ego Skill
| Name | Effect |
|---|---|
| Final Shadow | EP: 4 300% Damage +1 AP |
Potential
| Race | Effect |
|---|---|
| Epiphany Bonus (Combatant Epiphany) | Upon entering Chaos, you obtain 1 random Rare card through Epiphany. |
| Upgrade Basic Cards (Upgrade Card) | Basic Card damage, shield gain, and healing amount +2% |
| Upgrade Neutral Cards (Upgrade Card) | Neutral Card damage, shield gain, and healing amount +2% |
| Basic Card Proficiency (Basic Card) | Dark Blade cards have 15% increased Critical Chance. |
| Upgrade Unique Cards (Upgrade Card) | Unique Card damage, shield gain, and healing amount +2% |
| Health Proficiency (Stats) | Stamina increase by 1.6% |
| Basic Card Proficiency (Basic Card) | +5% Damage of Rei's Dark Blade If Rei's Attack is greater than 500, an additional +5% to that value |
| Attack Proficiency (Stats) | Increases Attack by 1.6% |
| Upgrade Unique Stats (Unique Stats) | If Rei's Attack is greater than 550, +10% Predator's Blade Damage For every 10 Attack exceeding that value, an additional +1% (up to an additional +20%) |
Chaos Zero Nightmare Related Guides
