Introduction to Nightmare Feilian Beringal Guide

Wuthering Waves Nightmare Feilian Beringal Guide: Nightmare: Feilian Beringal is a powerful enemy classified as an Echo in Wuthering Waves. Designated as H71, it belongs to the Overlord class—an elite tier of Echoes known for their immense power and presence on the battlefield. This Echo has a Cost of 4, which reflects its high-tier utility and limited availability within your Echo slots. It carries a 2-Star Rarity, making it a mid-tier choice among Overlord-class Echoes. Unlike some Overlords, Nightmare: Feilian Beringal does not have a Phantom Appearance, meaning it cannot be encountered in spectral form within the world.
How to Obtain Nightmare: Feilian Beringal Echo

To obtain the Nightmare: Feilian Beringal Echo, players must defeat the Echo’s Overlord counterpart in the open world. This formidable boss can be found in Requiem Ravine, specifically within the Hallowed Reach – Rinascita area. Before the fight becomes available, players must first unlock access by completing the Dream Patrol I tutorial quest. This quest can be acquired in Ragunna City and is listed under the Tutorial Quests category.
When facing Nightmare: Feilian Beringal in battle, it is crucial to adapt to its devastating ground shock attacks. One effective strategy is to position yourself on higher terrain to evade the shockwaves and maintain offensive pressure from a safer vantage point. Mastering the boss mechanics and environmental positioning will significantly increase your chances of obtaining its Echo.
Echo Attributes (Stats)
Nightmare: Feilian Beringal, as a 4-Cost Overlord-class Echo, features powerful base stats and a wide range of possible main and sub-stat variations. At Rank 4, Level 25, it can roll with the following primary main stats: ATK (150), ATK% (33.0%), HP% (33.0%), DEF% (41.8%), Crit Rate (22.0%), Crit DMG (44.0%), and Healing Bonus (26.4%). These stats provide flexibility depending on the character’s role and build.

The possible main stats by rank for Overlord (4-Cost) and Calamity Echoes scale consistently across rarity levels. For flat ATK, values increase from 46 (Rank 2) to 150 (Rank 5). ATK% and HP% follow the same scaling: 10.6% (Rank 2) to 33.0% (Rank 5). DEF% ranges from 13.5% to 41.5%, Crit Rate from 7.1% to 22.0%, and Crit DMG from 14.3% to 44.0%. Healing Bonus progresses from 8.5% to 26.0%, making these Echoes highly adaptable for both offensive and support-oriented builds.
In terms of sub-stats, Nightmare: Feilian Beringal can roll a broad spectrum of values, enhancing its versatility. Flat stats include HP (320–580), ATK (30–70), and DEF (30–70). Percentage-based sub-stats include HP% and ATK% (6.4%–11.6%), DEF% (8.1%–14.7%), Crit Rate (6.3%–10.5%), and Crit DMG (12.6%–21.0%). Additionally, it can gain utility and damage-boosting stats such as Energy Regen (5.6%–14.9%), Resonance Skill DMG Bonus (6.4%–12.4%), Basic Attack, Heavy Attack, and Resonance Liberation DMG Bonuses, each ranging from 6.4% to 11.6% depending on the roll. These stat combinations make it a potent Echo with considerable build flexibility.
| Stat Type | Rank 2 | Rank 3 | Rank 4 | Rank 5 |
| ATK (Flat) | 46 | 68 | 92 | 150 |
| HP % | 10.6% | 14.6% | 20.5% | 33.0% |
| ATK % | 10.6% | 14.6% | 20.5% | 33.0% |
| DEF % | 13.5% | 18.7% | 26.0% | 41.5% |
| CRIT Rate | 7.1% | 9.8% | 13.8% | 22.0% |
| CRIT DMG | 14.3% | 19.7% | 27.7% | 44.0% |
| Healing Bonus | 8.5% | 11.9% | 16.3% | 26.0% |
Echo Ability

The Echo ability of Nightmare: Feilian Beringal offers a potent blend of burst and sustained damage with added utility for Aero-focused builds. When activated at Rarity 5, the Echo skill summons Nightmare: Feilian Beringal to unleash a powerful opening strike, dealing 164.16% Aero DMG to enemies in its path. After the initial impact, the Echo leaves behind a Whirlwind Beam that automatically targets and attacks nearby enemies up to 5 times, with each strike dealing 21.89% Aero DMG.
Equipping this Echo in the main Echo slot also grants the Resonator two passive bonuses: a 12.00% Aero DMG Bonus and a 12.00% Heavy Attack DMG Bonus, enhancing both elemental output and physical pressure. The skill comes with a 20-second cooldown, allowing for reliable uptime in sustained fights while amplifying heavy attack synergy and Aero Resonator damage potential.
Possible Sonata Effect

The Sierra Gale Sonata Effect is a General-type set that enhances Aero-based damage and rewards efficient team rotation. It is especially effective for Resonators who rely heavily on Aero DMG and make use of Intro Skills to initiate combat phases. Below are the detailed set effects:
Set Type
Sonata Type: General
Primary Focus: Aero Elemental Damage Boost
Set Bonuses
2-Piece Bonus
Effect: Increases Aero DMG by 10%.
Purpose:
Provides a flat elemental damage boost, active at all times.
Suitable for general Aero damage dealers or hybrid sets with another 2-piece bonus.
5-Piece Bonus
Effect: After using an Intro Skill, increases Aero DMG by 30% for 15 seconds.
Conditions:
Triggered upon swapping into the character equipped with this 5-piece set and using their Intro Skill.
The 30% bonus applies only after the Intro Skill is successfully activated.
Notes:
The 15-second duration is sufficient for most burst windows.
This bonus synergizes well with fast-rotating team comps and Resonators who have high Aero damage output during their on-field time.
Encourages timing of skill usage immediately after swapping in to maximize the Aero DMG bonus window.
Recommended Characters
Nightmare: Feilian Beringal is a versatile 4-Cost Echo that excels on Aero-element Resonators, particularly those who benefit from Heavy Attack DMG and Aero DMG Bonus. The following characters synergize well with its skill effects and stat bonuses:
Jiyan
Role: Main DPS
Why it’s a good fit:
Yangyang
Role: Sub-DPS / Support
Why it’s a good fit:
Frequently Asked Questions (F.A.Q)
Where can I find Nightmare: Feilian Beringal?
Location: Requiem Ravine – Hallowed Reach – Rinascita
Appears as part of the Dreamless Patrol content.
What does the Echo Skill do?
Summons the boss to perform a burst attack dealing 164.16% Aero DMG.
Leaves a Whirlwind Beam that hits up to 5 times, each for 21.89% Aero DMG.
Any combat tips for defeating it?
Avoid shockwaves by elevating above ground-level attacks.
Time dodges during multi-strike whirlwind phases.
Stay mobile to avoid lock-on follow-ups during its enraged state.
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