Wuthering Waves 3.7 Echo Locations cover five new field Echoes plus the new Cost 4 Reminiscence: Suhsin the Inevitable. The five field additions are Formrender, Soulfrayer, Skywatch Lancer, Bloomburst Puppet and Jade Nether Serpent, while the Cost 4 Echo comes from the new Suhsin weekly boss.
The important live detail for Wuthering Waves 3.7 Echo Locations is that these Echoes do not all work the same way. Formrender, Soulfrayer and Skywatch Lancer are Cost 3 Elite Echoes, while Bloomburst Puppet and Jade Nether Serpent are Cost 1 Common Echoes. Their Sonata pools also split across Heart of Sworn Vigil, Flash of Electric Reflection and Flower of Tinged Yearning, so farming the right enemy matters if you are completing a five-piece set.

Wuthering Waves 3.7 Echo Locations: every new Echo, Cost and Sonata
| Echo | Cost | Sonata Effects | Echo Skill |
|---|---|---|---|
| Formrender | Cost 3 | Heart of Sworn Vigil; Flower of Tinged Yearning | 273.60% Fusion DMG; main-slot holder gains 10% Energy Regen |
| Soulfrayer | Cost 3 | Heart of Sworn Vigil; Flash of Electric Reflection | 91.18% Electro DMG x3; Outro within 15s gives incoming Resonator 12% Electro DMG for 15s |
| Skywatch Lancer | Cost 3 | Flash of Electric Reflection; Flower of Tinged Yearning | 32.09% Aero DMG x6 |
| Bloomburst Puppet | Cost 1 | Heart of Sworn Vigil | Multi-hit Glacio summon |
| Jade Nether Serpent | Cost 1 | Heart of Sworn Vigil | Multi-hit Fusion fireball summon |
| Reminiscence: Suhsin the Inevitable | Cost 4 | Heart of Sworn Vigil; Flash of Electric Reflection | Electro multi-hit Echo with a Hsin-specific enhanced version |
How to use detection for Wuthering Waves 3.7 Echo Locations
The fastest general method for Wuthering Waves 3.7 Echo Locations is the Data Bank and Echo detection system. Open the Echo entry you want, start detection and follow the active target marker. After clearing the local spawn, reactivate detection and move to the next marker. This is much safer on launch day than relying on a static list of coordinates that may mix repeatable overworld enemies with one-time dungeon or quest variants.
For Cost 3 farming, prioritize Formrender, Soulfrayer and Skywatch Lancer because elemental DMG Bonus can appear as a main stat on those pieces. Cost 1 farming is simpler: Bloomburst Puppet and Jade Nether Serpent are Heart of Sworn Vigil fillers where ATK% is usually the desirable main stat for conventional Hsin-style damage builds.
Where the Wuthering Waves 3.7 Echo Locations enemies appear
The five new field enemies belong to the Mengzhou and Land of Xuanfang ecosystem introduced around the 3.7 update. Kuro’s enemy material connects them with places such as the Censure Courts, Skyworks, Heart of Flames and Heart of Frost rather than presenting them as five bosses locked inside the Simulacrum Nexus. The Nexus itself adds two new Tacet Fields and a new Tacet Discord Nest for broader set farming.
Two live mapping numbers are already especially useful. Skywatch Lancer has 77 currently indexed overworld locations, making it a generous Cost 3 farm. Jade Nether Serpent has 17 indexed overworld locations, so detection is more useful there than trying to memorize a very long route.
Which Wuthering Waves 3.7 Echo Locations should you farm for Heart of Sworn Vigil?
Heart of Sworn Vigil has eight Echoes in its live pool: Kernel Puppet: Joy, Fog Lionarch: Body, Fog Lionarch: Head, Jade Nether Serpent, Bloomburst Puppet, Formrender, Soulfrayer and Reminiscence: Suhsin the Inevitable. The dedicated Heart of Sworn Vigil guide explains the two-piece and five-piece effects and which slots are easiest to target.
For a 4-3-3-1-1 Hsin setup, Reminiscence: Suhsin the Inevitable naturally fills the Cost 4 slot, Formrender or Soulfrayer can contribute a Cost 3 slot, and Bloomburst Puppet or Jade Nether Serpent can fill Cost 1 slots. You do not have to use only the five new field Echoes, because older Xuanfang Echoes also appear in the live Sonata pool.
Which Wuthering Waves 3.7 Echo Locations belong to the other new sets?
Flash of Electric Reflection includes Soulfrayer and Skywatch Lancer among its new field options, plus Reminiscence: Suhsin the Inevitable as a Cost 4 choice. Flower of Tinged Yearning includes Formrender and Skywatch Lancer. Use the Flash of Electric Reflection guide or Flower of Tinged Yearning guide when you want the full eight-Echo pool rather than just the 3.7 newcomers.
The practical Wuthering Waves 3.7 Echo Locations plan is therefore to decide the Sonata first, then farm the Echo Cost you actually need. Detection handles individual enemies, Tacet Fields handle bulk Sonata farming, and the Suhsin weekly boss supplies the new Cost 4. That is far more efficient than killing every new enemy simply because it arrived in the same patch.
Wuthering Waves 3.7 Echo Locations works best as a targeted farm, so check the required Sonata, Cost and main stat before committing Echo EXP or Waveplates.
