Chaos Zero Nightmare Season 4 Combatant Tier List

In Chaos Zero Nightmare Season 4 ("Shattered Light and Claws"), prioritize building Rossweisse as your primary damage dealer and Mika as your core support. High-tier endgame encounters heavily favor immediate burst damage, low-cost card cycling, and tight deck compression over prolonged attrition.

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Season 4 Combatant Rankings

Combatants are evaluated on three main performance metrics: Action Point (AP) economy, deck compression (avoiding unplayable or low-impact card bloat), and early burst potential to defeat bosses before combat mechanics escalate.

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Top Picks: EX and S-Tier Analysis

Rossweisse (Tier EX)

Rossweisse represents the highest offensive ceiling in Season 4. Her kit revolves around converting low-cost cards into high-multiplier burst rotations. Because she cycles cards rapidly without cluttering the hand, she avoids the draw penalties that hinder slower damage dealers in high-difficulty Rift content.

Sereniel (Tier S)

Following balance adjustments, Sereniel functions as a versatile hybrid carry. Her value comes from sustained off-turn chip damage and high AP efficiency. Pairing Sereniel with an aggressive primary striker allows teams to maintain constant offensive pressure while saving card plays for key burst windows.

Mika (Tier S)

Mika is the premier support unit across all standard archetypes. Her primary function is team-wide AP generation, allowing carries like Rossweisse and Heidemarie to deploy their highest-cost combination chains on turn one. She also provides defensive hand filtering to protect against dead draws.

Heidemarie (Tier S)

Heidemarie delivers concentrated burst damage that scales sharply with offensive buffs. While slightly less flexible than Rossweisse as a solo carry, she serves as an exceptional secondary striker in squads built around fast, front-loaded clears.

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Specialized Options: Tier A

Tier A combatants perform well when placed in compatible archetypes, but they require specific setups or strict hand management:

• Clara: Recommended for stages requiring direct survival checks. She mitigates lethal enemy burst and converts incoming damage into counter-play opportunities.
• Hugo: Excels in fights where controlling enemy action phases is required. His utility stabilizes teams that lack raw turn-one burst.
• Haru: A multi-hit attacker who steadily builds momentum across consecutive cycles. She drops in efficiency if forced into rapid, short-turn burst checks.
• Fei: Capable of S-tier burst numbers, but heavily reliant on draw sequencing and stance uptime. If card RNG interrupts her setup rotation, her overall damage falls sharply.

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Combatants to Deprioritize

Avoid over-investing in units defined by the following characteristics during Season 4 progression:

• Card Bloaters: Combatants who generate unremovable, low-value cards dilute your hand and starve your primary carry of action resources.
• Slow Ramp Units: Characters requiring three or more setup turns before contributing meaningful damage struggle against aggressive Season 4 boss phases.
• Rigid Niche Defenders: Pure damage-sponge units consume upgrade materials without offering the AP generation or offensive multipliers needed to clear high-end content quickly.

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Recommended Account Progression Order

1. Max One Primary Striker: Funnel weapon enhancements and primary skill resources into a single carry—preferably Rossweisse or Sereniel—before building alternative attackers.
2. Invest in Mika: Fully upgrade Mika's AP-generating and deck-cycling abilities to support your primary carry.
3. Add a Defensive Flex: Build Clara to handle stages with high incoming damage spikes.
4. Prioritize Deck Thinning: During stage runs, choose card-removal opportunities over adding speculative utility cards to keep your core burst chains reliable every turn.