The Nightmare Echoes in Wuthering Waves are special versions of the Overlord Tacet Discord. They were added to the game with the Rinascita update and have become a staple pick for newer Resonators. What separates Nightmare Echoes from its counterparts is its skill overhauls.
Not to forget, some of them also roll with the new Sonata Effects, which many characters require. For those willing to hunt them, this article discusses the Nightmare Echoes in Wuthering Waves, their locations and unlock criteria.
All Nightmare Echo locations in Wuthering Waves
Nightmare: Feilian Beringa

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- Sonata Effect: Sierra Gale
The Feilian Beringa Nightmare Echo spawns in the Requiem Ravine, a location in the Hallowed Reach region in Wuthering Waves. This Tacet Discord appears on the map once you complete the Dream Patrol I. It is unlocked by default once you arrive in Ragunna during the Chapter 2, Act 1 quest.
Nightmare: Impermanence Heron

- Sonata Effect: Midnight Veil
The Impermanence Heron Nightmare Echo can be located in the Thessaleo Fells, directly northeast of the Tactical Hologram. The Special Tacet Discord pops up in Rinascita after completing the Dream Patrol I quest.
Nightmare: Thundering Mephis

- Sonata Effect: Void Thunder
The Whispering Haven area has a serene waterfall right below the Polyphemus Windmill. The Thundering Mephis Nightmare Echo spawns in the adjoining water body, close to the Resonance Beacon. Completing the Dream Patrol I quest is required to unlock the Tacet Discord.
Also read: How to get The Laureate glider in Wuthering Waves
Nightmare: Tempest Mephis

- Sonata Effect: Void Thunder and Empyrean Anthem
The Shores of Last Breath in Fagaceae Peninsula houses the special Tempest Mephis. The location can be accessed after completing the Where Wind Returns to Celestial Realms exploration quest and Dream Patrol Challenges in Fagaceae Peninsula.
Nightmare: Crownless

- Sonata Effect: Sun-sinking Eclipse
To find the Crownless Nightmare Echo, teleport to the Penitent's End and head to the ruins above the Resonance Beacon. Just complete the Ruins Where Shadows Roam quest and discover the Dream Patrol Challenges in the area if the Tacet Discord doesn’t spawn on the map.
Also read: Wuthering Waves Cartethyia's attribute and weapon type revealed
Nightmare: Inferno Rider

- Sonata Effect: Molten Rift
You can find the Inferno Rider Nightmare Echo at the Averardo Vault, in a ruin located west of the Sentry Construct. Completing the Dream Patrol I tutorial quest will reveal the Tacet Discord’s location on the map.
Nightmare: Mourning Aix

- Sonata Effect: Eternal Radiance
Complete the Dream Patrol I quest to unlock the Nightmare: Mourning Aix. This special Tacet Discord appears south of the Averardo Vault.
Nightmare: Lampylumen Myriad

- Sonata Effect: Frosty Resolve and Empyrean Anthem
The Lampylumen Myriad Nightmare Echo resides at the Beohr Trench in Wuthering Waves, southeast of the Resonance Beacon, to be specific. You can find the creature once after completing the Dream Patrol I tutorial quest.
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