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Chaos Zero Nightmare (CZN)
The Great Rift Guide
S1: Forbidden Catalyst | Nebula Distortion | The Great Rift
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Score as many points using two teams within a limited number of turns in The Great Rift, which is part of the Forbidden Catalyst seasonal content in Chaos Zero Nightmare (CZN). Learn more about The Great Rift event, its mechanics, boss guide, recommended teams and cards, and release date here!
List of Contents
The Great Rift Mechanics
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Buffs to Order and Void Characters
The first boss will be weak to Order characters and features 3 minions that will constantly respawn and debuff the boss when killed. The second boss will be weak to Void characters and alone. Both bosses will buff your characters with a 50% damage buff if they are either an Order or a Void character.
Increased Inspiration and AoE Attack Card Damage
Aside from bonus attribute damage, inspiration cards and attack cards that target all enemies will receive a 50% damage buff. This is especially useful if you want to use Yuki in this game mode.
Vanguard and Rearguard Team Formation
In this gamemode, you need two sets of team fully built and ready to tackle the boss. The first team will act as a Vanguard where your goal is to defeat the enemy as fast as possible. The second team will be the rearguard and their goal is to deal as much damage as possible because the boss will revive if its HP is 0.
Limited Turns for Each Team
For the Vanguard team, they only have 10 turns to defeat the boss while the Rearguard team only has 5. Even if you don't kill the first boss, it will proceed to the next fight regardless.
Increased Bonus Score In Higher Difficulties
There are 4 difficulties you can choose, Easy, Normal, Hard and Hell. The boss mechanics across the difficulty is the same, however, the higher the difficulty you go, the higher the amount of health and damage of the boss is.
To circumvent this, the higher difficulty you go, the more bonus score you can get for that fight.
The Great Rift Boss Guide
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Reduce Thought Debris to 0 Before 3 Turns Pass
Once you are able to reduce its Thought Debris down to 0, next turn it will fill your hand with 0-cost exhaust cards that draws 1 card and has a chance to inflict 1 Vulnerable to the first boss or 1 Weaken to the second boss.
If you managed to reduce its Thought Debris in one turn after the boss gets it, it will immediately give you the cards and reset its attack pattern so make sure to deplete its stack as fast as possible every turn.
Harmful Cards Will Flood Your Hand if Requirement Is Not Met
If you are unable to deplete the Thought Debris stacks of the boss, next turn it will fill your hand with 2-cost exhaust cards that inflicts 1 Vulnerable and a chance to deal fixed damage to your team.
Only Spend 5 Vanguard Turns to Get the Maximum Rearguard Turns
Any excess turn from the vanguard team will be transferred over to the rearguard team. You can only transfer up to 5 turns so make sure to finish the first fight within 5 turns.
Use Shields and Heals During Phase 2 of the Fight
Every damaged blocked by a shield and every HP healed will add to your score at the end of the run. Do note that healing over a full HP will not be scored.
Increased Score if Attack Is Completely Blocked by Shields
If you are able to completely block the attack of the boss, your score will increase by 10% at the end of the run. Make sure to bring in shield characters or equip your highest dealing damage team with equipments or cards that can generate shields.
How to Get High Scores in The Great Rift
Recommended Vanguard Teams
| Team Cards and Epiphanies | ||||
|---|---|---|---|---|
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 Flame Dragon's Jewel 1
AP Cost: 1 Type: Tags: Initiation, Unique Upgrade ・+30% Attack Card Damage ・When using an Attack Card, 1 Passion Weakness to the target  Rising Dragon Spire 5
AP Cost: 2: Type:  Attack ・150% Damage ・+1 hit for each Passion card used for 1 turn  Unity of Attack and Defense 2
AP Cost: 0 Type:  Skill ・Move own 2 Basic Cards to hand, Cost -1 for 1 turn  Spirit of the Aromata 1
AP Cost: 1 Type: Tags: Retain Skill ・When using a Passion card, +20% Damage for 1 turn Duplicate Priority: Unity of Attack and Defense > Spirit of the Aromata > Rising Dragon Spire |
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Duplicate Priority: Repose > Sir Kowalski > Pendant of Resolution |
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The vanguards or your first team must defeat the boss within 5 turns so that the rearguards can have the extra 5 turns on their end. The best characters to defeat this boss quickly is Mei Lin using her multiple copies of Unity of Attack and Defense then dealing massive damage with Rising Dragon Spire after playing multiple passion cards.
Veronica's job in this team is to help fuel Mei Lin's Rising Dragon Spire and cycle through the deck with her 0-cost draw 2 cards. The third spot of this team can be anyone as long as they have consistent card draw such as Cassius, Nia or Hugo.
Alternative Characters and Cards
|
 Prepare to Subdue 2
AP Cost: 0 Type: Skill ・Draw 1 Attack Card(s) of this unit ・ +20% Damage Mount to Attack Card(s) of this unit for 1 turn 
 Iceberg Cleave 0
AP Cost: 1 Type: Attack ・180% damage to all enemies ・ Inspiration: +1 Hit, -20% Damage Duplicate Priority: Prepare to Subdue = Iceberg Cleave > Flash Slash |
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 Rapid Fire (Luke) 1
AP Cost: 1 Type: Attack ・75% x 2 Damage ・Create Handgun Bullet equal to number of Critical Hits ・+50% Critical Chance  Seize the Opportunity 4
AP Cost: 1 Type: Tags: Lead Skill ・100% Shield ・+100% next Attack Card Damage  Dance of the Demon 2
AP Cost: 1 Type: Attack ・50% Damage ・+1 hit equal to the number of Attack Cards used this turn Duplicate Priority: Rapid Fire > Dance of the Demon |
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 Opening Found 5
AP Cost: 1 Type: Upgrade ・When own card is Retained, +150% Extra Attack to random enemies 
Duplicate Priority: Opening Found > Guilty Pleasure |
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Yuki is suitable as one of the characters in the first team as she can dish out consistent order damage and it helps that she gets buffed in this game mode. Her playstyle revolves around using all of her attack cards every turn and making sure its inspiration effect is activated to deal more damage.
Luke can dish out high single-target damage by playing his bullets generated by Rapid Fire to fuel the amount of hits of Dance of the Demon and deal multiple instances of damage based on how many attack cards were used.
Beryl and her multiple copies of Opening Found with the upgrade epiphany can easily defeat the boss within 5 turns. Make sure that her other party members can fulfill the requirement to reduce Thought Debris to 0 because Beryl's extra attacks is not capable of reducing it.
Recommended Rearguard Teams
| Team Cards and Epiphanies | ||||
|---|---|---|---|---|
|
 Shadow Reload 4
AP Cost: 1 Type: Tags: Initiation Upgrade ・When Healed by a Skill Card, create 1 Shadow Dagger 
Duplicate Priority: Shadow Reload > Curse > Vital Attack |
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Duplicate Priority: Dice Trick > Devil Dice |
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 Blessing of Waves 2
AP Cost: 1 Type: Tags: Retain Skill ・Heal 150% ・+30% Healing equal to number of AP ・1 Wave 
Duplicate Priority: Source of Water > Tactical Analysis > Blessings of Water |
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The rearguards or the second team must deal a lot of damage to the boss to score a lot in this phase of the fight. The boss receives more damage from Void characters therefore, the best team for this is Tressa with her near-infinite Shadow Dagger generation and high amounts of Agony infliction.
Cassius will provide card draw, morale buffs and 0-cost attack cards to help for more Agony stacks once the Triple 0 quest and Dice Trick is active. Mika will help Tressa generate more Shadow Daggers with her cheap heals and helps the team play all of their cards with her AP generation.
Alternative Characters and Cards
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 Hunting Instincts 1
AP Cost: 0 Type: Tags: Initiation Upgrade ・When another Combatant uses an Upgrade or Skill Card, gain 1 Hunt Commence 
Duplicate Priority: Hunting Instinct > Quick Fix > Dingo Howling |
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|---|---|---|---|---|
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 Dark Mist Secret Art: Destruction 4
AP Cost: 0 Type: Skill ・Move Dark Mist Secret Art: Annihilation and Dark Mist Secret Art: Black Dance from Draw Pile or Graveyard to hand  Dark Mist Secret Art: Annihilation 1
AP Cost: 1 Type: Tags: Haste Attack ・225% Damage ・Dark Mist Blade Art: +1 Damage count  Dark Mist Inner Art 5
AP Cost: 1 Type: Upgrade ・If in Dark Mist Stance state, +50% Rin's Attack Card Damage Duplicate Priority: Dark Mist Secret Art: Destruction > Dark Inner Mist Art |
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Other characters that can match the Tressa team is Hugo with his Commence the Hunt extra attacks per single-target attack cards. He can also pair up with Tressa if Cassius is not available or with Luke too. He can also draw cards for the party with his Quick Fix or Dingo Howling.
Rin can be a substitute Void DPS but she demands a lot of specific cards and build path to fully work in this gamemode because most of her damage comes from reusing her Annihilation and Black Dance cards multiple times in one turn. She needs characters that can buff and draw at the same time such as Cassius or Rei.
Recommended Neutral and Forbidden Cards
| Role | Cards |
|---|---|
| Striker/Vanguard | |
| Ranger/Hunter | |
| Psionic/Controller | |
| Any Role | |
| Forbidden Cards |
Most of the cards shown here revolves around free draws, these are especially helpful in game modes that restricts the gameplay by limiting turns. One combo here that can help most teams is to have the Forbidden Card, Eternal Hunger, and discard it using Precision Aim to be drawn again and get free 1 AP and draw.
One outlier is the neutral card, Negotiation. It buffs your team with 2 Morale but also buffs the enemies with the same effect. This seems like a double-edged sword however, The Great Rift doubles the max HP of your party which leads to builds pathing more towrads offensive rather than defensive.
The Great Rift Rewards
Personal Best Record Rewards
| Personal Record | Rewards |
|---|---|
| Reach a Best Record of 20,000 or higher |
 Traces of Memory
x30 Pure White Fragment
x200 Unit
x25,000 |
| Reach a Best Record of 25,000 or higher |
Traces of Memory
x30 Pure White Fragment
x200 Unit
x25,000 |
| Reach a Best Record of 40,000 or higher |
Traces of Memory
x30 Pure White Fragment
x200 Unit
x25,000 |
| Reach a Best Record of 60,000 or higher |
 Crystals
x50 Pure White Fragment
x200 Unit
x35,000 |
| Reach a Best Record of 80,000 or higher |
Traces of Memory
x30 Pure White Fragment
x200 Unit
x35,000 |
| Reach a Best Record of 100,000 or higher |
Traces of Memory
x30 Pure White Fragment
x200 Unit
x35,000 |
| Reach a Best Record of 200,000 or higher |
Crystals
x50 Pure White Fragment
x200 Unit
x45,000 |
| Reach a Best Record of 300,000 or higher |
Traces of Memory
x30 Pure White Fragment
x200 Unit
x45,000 |
| Reach a Best Record of 400,000 or higher |
Traces of Memory
x30 Pure White Fragment
x200 Unit
x45,000 |
| Reach a Best Record of 500,000 or higher |
Traces of Memory
x30 Pure White Fragment
x200 Unit
x60,000 |
You will get these rewards once you reach a personal best score in any difficulty runs. Do note that these rewards are one-time only and will reset in Phase 3.
Weekly Cumulative Rewards
| Cumulative Score | Rewards |
|---|---|
| Achieve a cumulative score of at least 100,000 |
Crystals
x60 Traces of Memory
x50 Pure White Fragment
x1000 Unit
x80,000 |
| Achieve a cumulative score of at least 200,000 |
Crystals
x60 Traces of Memory
x50 Pure White Fragment
x1000 Unit
x80,000 |
| Achieve a cumulative score of at least 300,000 |
Crystals
x70 Traces of Memory
x50 Pure White Fragment
x1000 Unit
x80,000 |
| Achieve a cumulative score of at least 500,000 |
Crystals
x80 Traces of Memory
x50 Pure White Fragment
x1000 Unit
x80,000 |
Every Sunday at 18:00 (UTC), you will get rewards by adding all scores you got in every run you complete every week. Make sure to gather 500,000 score every week to get all the rewards.
Merit Rank Rewards
| Rank | Rewards |
|---|---|
| Master Top 1% |
Suppressed Servant [Master] Sticker
Traces of Memory
x180 Pure White Fragment
x2500 Prism Lens
x5 |
| Diamond Top 3% |
Suppressed Servant [Diamond] Sticker
Traces of Memory
x170 Pure White Fragment
x2300 Prism Lens
x5 |
| Platinum Top 10% |
Suppressed Servant [Platinum] Sticker
Traces of Memory
x160 Pure White Fragment
x2200 Prism Lens
x5 |
| Gold Top 30% |
Suppressed Servant [Gold] Sticker
Traces of Memory
x140 Pure White Fragment
x2000 Prism Lens
x5 |
| Silver Top 50% |
Suppressed Servant [Silver] Sticker
Traces of Memory
x120 Pure White Fragment
x1800 Prism Lens
x5 |
| Bronze Top 100% |
Suppressed Servant [Bronze] Sticker
Traces of Memory
x100 Pure White Fragment
x1500 Prism Lens
x5 |
Referencing the highest score you achieve in all of your runs, you will be placed a ranking based on other player's performance. Rewards will be given before the end of Phase 2.
What is The Great Rift
Two Teams and Two-Phase Boss Fight
The Great Rift involves forming two teams to take on a two-phase boss fight. The goal of the event is to score as many points as you can within a limited number of turns. There will be obtainable effects during the fight, and the higher your points at the end, the higher your rewards can be!
It is imporant to note that there will also be cumulative rewards as you repeat the fights, but there will also be rewards based on the highest score you get.
Obtain Record Rewards Based on High Score
After dealing damage, the damage you deal will be converted to your run's score. Your score will determine the rewards you can get and weekly cumulative rewards will also progress based on the total score you get throughout the week.
Merit Ranking is the Leaderboard and Shows the Top Players
A unique addition to this event would be leaderboards showing the top players in The Great Rift. You can use this to copy their strategies and further improve your scores! The ranking will display the top 1000 players and will have separate calculations for the first and second half of the season.
Merit Ranking List
| Rank | Percentile |
|---|---|
| Master | Top 1% |
| Diamond | Top 3% |
| Platinum | Top 10% |
| Gold | Top 30% |
| Silver | Top 50% |
| Bronze | Top 100% |
Regular Save Data Can Be Used
For The Great Rift content, you'll be able to use both Basic Save Data and Forbidden Catalyst Save Data. If you have a fully decked out Save Data from outside Laboratory 0, consider bringing it to the fight and rack up higher points!
The Great Rift Release Date
Releases on December 3, 2025
The Great Rift was released on December 3, 2025, along with the Phase 2 of the seasonal Forbidden Catalyst event.
Second Half Releases on December 24
For the second half of The Great Rift, it will begin in Phase 3 after the patch update on the 24th of December and will last until the 13th of January 2026.
Chaos Zero Nightmare (CZN) Related Guides
Season 1: Forbidden Catalyst Guides
| Season 1: Forbidden Catalyst | |
|---|---|
| The Great Rift Guide | Nebula Distortion Guide |
| Supply Store Items | Laboratory 0 Guide |
| How to Reach Laboratory 0's Secret Boss | - |
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