The final piece of the DoT team, Olga makes her grand debut in Chaos Zero Nightmare. In this guide, we will go over the best builds for Olga in Chaos Zero Nightmare so that players can clear all of the game’s end game contents easily.
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Olga Skill Kit & Playstyle Analysis
General Introduction
Olga is a 5-star Character of the Instinct Element and Psionic class that specializes in inflicting as many Fractures and Agony stacks on enemies as possible and activating them with her attack cards, helping to facilitate the Fracture and Agony teams.

Olga Playstyle Analysis
Olga’s playstyle and gimmick is very simple in nature, playing off the 2 DoT effects currently active in Chaos Zero Nightmare: Fractures and Agony.
Olga’s playstyle revolves around her Brand of Agony effect, which can be inflicted on the enemies with her powerful Break Apart and Renew card. Once this brand is marked on enemies, whenever Agony or Fracture effects are activated either through normal means or through forced means, Olga can move her important Rift of Severance damage card into her hand. Upon using the Rift of Severance card, Olga can both inflict Fracture and Agony on the enemies and also activate their Fracture and Agony stacks once, allowing her to chain a reaction and deal powerful damage to enemies at the same time. If the enemies still have the brand effect on them, this effect will also move another Severance card onto her hand to help her continue her damage combo.
After using her unique card, Olga can inflict the Shattering effect onto the enemies, dealing additional damage to enemies whenever DoT effects are triggered.
Olga Best Cards And Epiphany Priority
Here are an analysis of all of Olga’s cards and their most important Epiphanies:
![]() | 100% Damage. |
| Reaping Slash | Olga’s basic attack card. Should be removed whenever possible. |
| Importance: Low |
![]() | 100% Heal. |
| Slake Thirst | Olga’s basic defense card. Should be removed as soon as possible. |
| Importance: Low |
![]() | 80% Damage and 2 Fracture, then activate Fracture inflicted by this unit. | ||||
| Rift of Severance | One of Olga’s main damage cards that allow her to deal damage, inflict Fracture or Agony and trigger the DoT stacks. | ||||
| Importance: Highest | |||||
| Epiphanies | |||||
| #1 | 140% Damage and 3 Fracture, then activate Fracture inflicted by this unit. | Medium Value Epiphany | |||
| #2 | 80% Damage and 2 Fracture, then activate Fracture inflicted by allies. | Best Epiphany | |||
| #3 | 80% Damage and 2 Fracture, then activate Fracture inflicted by this unit 2 times. | High Value Epiphany | |||
| #4 | 100% Damage and 1 Fracture. 1 Fracture for each type of harmful effect the target has (max 3). Activate Fracture inflicted by this unit. | High Value Epiphany | |||
| #5 | 100% Damage and 2 Fracture, then activate Fracture inflicted by this unit. Add 1 Fracture at the end of the turn (max 3). | Medium Value Epiphany | |||
![]() | 80% Damage and 4 Agony, then activate Agony inflicted by this unit. | |||
| Dispersed Desire | One of Olga’s main damage cards that allow her to deal damage, inflict Fracture or Agony and trigger the DoT stacks. | |||
| Importance: High | ||||
| Epiphanies | ||||
| #1 | 140% Damage and 6 Agony, then activate Agony inflicted by this unit. | Medium Value Epiphany | ||
| #2 | 80% Damage and 5 Agony, then activate Agony inflicted by allies. | High Value Epiphany | ||
| #3 | 80% Damage and 5 Agony, then activate Agony inflicted by this unit 2 times. | High Value Epiphany | ||
| #4 | 80% Damage, 4 Agony, and 3 Scorched, then activate Agony inflicted by this unit and activate Scorched inflicted by allies. | Best Epiphany | ||
| #5 | 100% Damage and 4 Agony, then activate Agony inflicted by this unit. At the end of the turn, 1 additional Agony (max 4). | Medium Value Epiphany | ||
![]() | 1 Brand of Agony. 4 Agony to the enemy with the highest HP. | |||
| Break Apart & Renew | Olga’s main enabling card that allow her to inflict Brand effects onto enemies to move her damage cards onto her hands when DoTs are triggered. | |||
| Importance: High | ||||
| Epiphanies | ||||
| #1 | Change Cost to 0. 1 Brand of Agony. 4 Agony to the enemy with the highest HP. | High Value Epiphany | ||
| #2 | Change Cost to 0. 1 Brand of Fracture. 2 Fracture to the enemy with the highest HP. | Medium Value Epiphany | ||
| #3 | Change Cost to 0. [Exhaust] 2 Brand of Fracture. 2 Brand of Agony. 3 Fracture and 6 Agony to the enemy with the highest HP. | Medium Value Epiphany | ||
| #4 | Change Cost to 0. [Unique] Move 1 Rift of Severance to hand and apply Retrieve. | High Value Epiphany | ||
| #5 | Change Card to Upgrade. Change Cost to 2. [Unique] [Initiation] [Lead] 2 Brand of Fracture. 2 Brand of Agony. At the start of the turn, 1 Brand of Fracture or 1 Brand of Agony. | Best Epiphany | ||
![]() | [Unique] When Fracture or Agony is activated through a Targeting Card, 2 Fracture and 3 Agony to the target (3 times per turn). | |||
| Insatiable Cravings | Olga’s main enabler card that help her inflict additionally Fracture and Agony stacks on enemies. | |||
| Importance: High | ||||
| Epiphanies | ||||
| #1 | Change Cost to 0. [Unique] [Initiation] When Fracture or Agony is activated through a Targeting Card, 2 Fracture and 3 Agony to the target (3 times per turn). | Best Epiphany | ||
| #2 | [Unique] When Fracture or Agony is activated through a Targeting Card, 2 Fracture and 3 Agony to the target (4 times per turn). | High Value Epiphany | ||
| #3 | [Unique] When Fracture or Agony is applied through a Targeting Card, 1 Fracture and 2 Agony to the target (7 times per turn). | High Value Epiphany | ||
| #4 | [Unique] At the start of the turn, 3 Scorched to all enemies. At the end of the turn, remove Scorched from all enemies, then apply Fracture for each Scorched removed to the enemy with the highest HP (max 7). | Medium Value Epiphany | ||
| #5 | [Unique] When a harmful effect is applied through an ability, increase Damage Amount by 1% for 1 turn (max 30%). | Medium Value Epiphany | ||
![]() | [Unique] [Rapacity] 2 Shattering, 200% Damage, 2 Fracture, and 4 Agony. When this card is activated, change into Reckoning. |
| End of the Line | Olga’s special damage card that amplifies the damage of her DoT triggers and help her deal additional damage whenever DoTs are triggered. |
| Importance: High | |
Olga Best In Slot And F2P Partners
Olga Best Partners
Olga’s best partner is her signature 5-star partner:
![]() | Emilie |
| Passive Effect: Increase the assigned Combatant’s Attack by 16–24%. When Fracture is inflicted through a card of the assigned Combatant, +10%-20% to Critical Chance and increase Damage Amount of ally Fracture and Scorched by 15%-30% (cannot stack). | |
| Active Skill: 300% Damage. 2 Sensory Deprivation. Sensory Deprivation: Increase Damage Amount taken from the assigned Combatant’s DoT effects by 20%. At the end of the turn, decrease Sensory Deprivation by 1. | |
| Reason: Olga’s signature Partner that grants her massive amount of Attack, Critical Chance and Fracture Damage boost, helping to optimize her damage output. | |
For F2P options, players should use these as Olga’s Partners:
![]() | Eloise |
| Passive Effect: Increase the assigned Combatant’s Attack by 8/16%. The combatant’s attack card damage increases by 10/20%. The first time the assigned Combatant either Exhausts a card or gains a Status Ailment card (includes cards that have been changed from Status Ailment cards), increases Damage Amount of Attack Cards by 12/24% for 1 turn. | |
| Active Skill: For 1 turn, when a card is Exhausted, apply 1 Weaken to a random enemy. | |
| Reason: The Budget Partner option for Olga that boosts her cards’ damage output. | |
![]() | Zatera |
| Passive Effect: The assigned combatant’s Attack is increased by 8/16%. When Injured, at the end of battle, recover 4/8% Health. | |
| Active Skill: Gain 200% Shield. | |
| Reason: The 3-Star Partner budget option for Olga that should be replaced as soon as players get better Partners for her. | |
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Olga Best Equipment & Refinement
For Equipment build when running Chaos, players should aim for these equipments for Olga to maximize her power:
![]() | Dark Grip’s Claws |
| Increase Damage dealt by all attacks by 25%. | |
| Reason: This equipment helps boost Olga’s damage output by boosting all of her attack’s damage output. | |
![]() | Fairy King’s Crown |
| +6% Critical Chance. | |
| Reason: An amazing Equipment that grants Olga additional Critical Chance. | |
![]() | Invader Observation Logs |
| +20% Damage Amount to Attack Cards, and +2% Critical Chance for each enemy present | |
| Reason: This equipment helps to boost Olga’s overall damage output by boosting her Attack card’s damage output and her critical chance. | |
Olga Best Memory Fragments Sets & Stats
Olga Best Memory Fragments Set
For Olga, players should use the brand new 4pcs set: Sanguine Thorn, which boosts her critical Damage output the more she inflicts Fracture to enemies. For the 2 pcs set, players should use the Executioner’s Tool set to boost her Critical Damage even further.
![]() | Sanguine Thorn |
| 4-pc: When Fracture is applied through a card, +25% Critical Damage for 1 turn (max 25%, max 2 stacks). When 10 or more Fractures have been applied through cards, +15% Critical Damage to DoTs (max 15%) | |
| Explanation: This set helps boost Olga’s Critical Damage massively simply by her doing her usual gameplay rotation. | |
![]() | Executioner’s Tool |
| 2-pc: +25% Critical Damage | |
| Explanation: Boost Olga’s Critical Damage stat to optimize her damage output. | |
Olga Best Main Stats & Sub Stats
As a main/sub DPS character, Olga wants your usual offensive stats for her Main and Sub stats.
| Piece | Main Stats |
| Ideal | Critical Chance% |
| Desire | Instinct Damage% |
| Imagination | Attack% |
| Priority | Sub Stats |
| 1st | Damage Over Time% |
| 2nd | Critical Chance% |
| 3rd | Critical Damage% |
| 4th | Attack% |
Important Stat Threshold:
– Players need to get Olga to at least 6% Damage Over Time to activate and optimize her final talent.
– Players should invest in boosting Olga’s Critical Chance and Critical Damage as high as possible to optimize her damage output.
Olga Best Teams
As a DPS enabler character that can inflict massive amounts of DoT stacks on enemies and deal powerful DoT damage, Olga can be fitted into 2 main teams: the Fracture Team and the Agony Team:
– Fracture Team
![]() | ![]() | ![]() |
| Arabella | Hilde | Olga |
| Main DPS | Sub DPS/ Support | Sub DPS/ Support |
This team makes use of Arabella’s own ability to constantly inflict Fracture on the enemies to make her the team’s main DPS Hypercarry option, being supported by others’ utility effects. Arabella herself can deal enough damage to destroy enemies with ease, simply needing other characters to help her with drawing cards and fulfilling her AP needs,
Hilde serves as the team’s main draw engine, with her ability to both inflict massive amounts of Fracture stacks onto enemies while also constantly drawing cards onto the hand.
Olga serves as the team’s main enabler, with her ability to constantly apply multiple stacks of Fracture onto enemies and triggering them, helping to facilitate her own playstyle and Arabella’s playstyles.
– Agony Team:
![]() | ![]() | ![]() |
| Tressa | Olga | Rei |
| Main DPS | Sub DPS/ Support | Support/ Sustain |
This team functions as a dual DPS Agony team, with both Olga and Tressa being able to inflict Agony onto the enemies and deal damage based on the enemies’ DoTs.
Olga and Tressa are able to inflict multiple stacks on Agony onto the enemies while also allowing Olga to instantly activate the Agony effect on the enemies to deal big damage to them whenever she use her attack cards.
Rei is used as the team’s main support and sustain character with her ability to boost the damage output of low cost cards and providing a decent amount of Morale buff to boost the damage of the entire team overall.
Conclusion
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