Nyx
Nyx is a 5★ Controller-class Partner in Chaos Zero Nightmare. Equipped on a Combatant, Nyx raises DEF by +12–20% (Always active) and Max HP by +12–20% (Always active). Nyx's EGO skill, Errante Hurricane, can be used for 4 cost. Rewritten in plain terms from in-game data — not a copy of the original wording.
Partner Passive
Resonance
What this partner does when equipped, explained buff-by-buff (values shown as a low→high investment range).
| Buff | Amount | Condition |
|---|---|---|
| DEF | +12–20% | Always active |
| Max HP | +12–20% | Always active |
| Healing | +12–20% | Always active |
| Damage | +8–16% | first ability-draw this turn · for 1 turn · to allies |
Rewritten in plain terms from in-game data — not a copy of the original wording.
Level-by-level upgrade table
Official in-game data across all 5 investment tiers (not just the low–high range).
| Buff | Tier 1 | Tier 2 | Tier 3 | Tier 4 | Tier 5 |
|---|---|---|---|---|---|
| DEF · Main stat boost | +12% | +14% | +16% | +18% | +20% |
| Max HP · Main stat boost | +12% | +14% | +16% | +18% | +20% |
| Max HP | +8% | +10% | +12% | +14% | +16% |
| Damage | +8% | +10% | +12% | +14% | +16% |
Rewritten in plain terms from in-game data — not a copy of the original wording.
EGO Skill
A special skill this partner can activate by paying the cost below.
Discard up to 3 cards, then Draw +1 cards equal to the number discarded.
Is Nyx Worth Investing In?
Nyx is a 5★ partner whose passive raises DEF by +12–20% across 5 official investment tiers — a solid pick whenever your team needs that stat.
Which Combatants Does Nyx Work Best With?
Nyx is a Controller-class partner. Its main effect grants a DEF bonus, so it fits any Combatant whose damage or survivability scales with DEF, not just one fixed unit.
What Does Nyx's EGO Skill Do?
Nyx's EGO skill, Errante Hurricane, costs 4 and does the following: Discard up to 3 cards, then Draw +1 cards equal to the number discarded.
