Chaos Zero Nightmare: 1st Anniversary 5-Star Partner Guide

When using your 1st Anniversary 5-star Partner Selector in Chaos Zero Nightmare, prioritize universal offensive partners that function at zero duplicates. Partners act as force multipliers through passive stats, trigger buffs, and action economy bonuses. If your roster already possesses flexible offensive coverage, spend your selector ticket on a signature partner dedicated to an active, top-tier damage carry you field daily.

Do not spend this limited ticket on defensive sustain units or companions that rely on duplicate copies to unlock their primary value.

Selector Evaluation Framework

Choosing a Partner differs from choosing a playable Combatant. A Combatant sets your active deck and battle style, whereas a Partner enhances your team's overall resource flow and damage output. Spending a rare selector on an overly narrow companion limits your account's flexibility as team compositions shift.

Evaluate candidates against four core standards:

Universal Offensive Partners vs. Signature Partners

Universal offensive companions provide the safest return on investment. High-difficulty sector runs and endgame boss encounters center on clear speed and damage checks. Partners that grant bonus Action Point (AP) refunds, deck cycling, critical rate, or unconditioned damage increases enhance almost any damage dealer. When an older carry falls out of favor, a universal partner can immediately transfer to your next primary attacker.

Signature partners become the correct choice only under strict conditions:

• You currently own the corresponding Combatant.
• That Combatant serves as your primary carry for challenging sector clears.
• The partner resolves a specific combat bottleneck, such as inconsistent energy generation, awkward card cycling, or conditional burst windows.

If you bench that carry later, a specialized signature partner loses most of its account utility.

Traps and Choices to Avoid

Avoid selecting sustain-focused defensive partners. In competitive clears and time-limited battles, defensive partners providing minor shields, passive healing, or incoming damage mitigation rarely overcome strict DPS checks. Defensive card drafting, standard in-run relics, and dedicated support combatants provide adequate protection without wasting your 5-star selector.

Additionally, bypass any partner whose major utility is locked behind duplicate transcendence. If a companion offers a marginal bonus at base and requires multiple copies to reach viable numbers, pass on it. A selector pick should provide full mechanical value immediately upon acquisition.

Step-by-Step Selection Checklist

Apply this sequential process before the anniversary selector expires:

1. Audit your primary damage dealer: Review the partner currently equipped to your strongest carry. If they rely on a 4-star option and their 5-star signature solves a critical rotation issue, consider that signature.
2. Prioritize versatility over specialization: If your main carry already performs reliably, choose a universal offensive partner with broad combatant compatibility.
3. Verify the zero-duplicate skill: Read the base skill description to confirm its primary draw, AP recovery, or damage bonus functions without duplicate investments.
4. Compare standard banner pools: If two candidates provide equal utility, select the one less accessible through standard recruit banners.
5. Level and equip immediately: Once claimed, upgrade the partner's level to grant immediate passive stat increases to your front-line combatants, then test the updated rotation in high-difficulty runs.