Increases Resonance Energy of the equipping character and the ATK of the next character taking the field. The skill itself deals 300%+ total Havoc DMG. Still the best in slot for any Sub-DPS running Moonlit Clouds; the nightmare version only has the Midnight Veil sonata effect, making it more inclined for Havoc Sub-DPS.

The best Rejuvenating Glow echo for the best HP-scaling supports in the game. Works with Shorekeeper, the best healer right now, and can charge Concerto Energy extremely fast by holding the echo button while Resonators can still act.

The best echo for Sub-DPS that does coordinated attacks. Gives an ATK increase for the current resonator as long as the coordinated attacks deal critical hits, and the summoned blades also work off-field.

Extremely effective attacker when summoned in battle. ATK is increased for 15s after skill activation and the skill deals up to 270% damage. Can also be used in the overworld to traverse quickly.

Deals a total of 270% damage every time it is summoned. The skill can be charged up to three times, letting you use the echo skill multiple times.

One of the two best echoes for Electro DPS. Use it if your Resonator scales off Resonance Skill. Also has access to the Empyrean Anthem sonata effect, so it can work with coordinated attack Sub-DPS characters.

One of the two best echoes for Electro DPS. Use it if your Resonator scales off Resonance Liberation instead of Resonance Skill.

Primary Gusts of Welkin and Windward Pilgrimage 4-cost echo. Grants Aero DMG Bonus to the wearer with a bonus 10% if worn by Aero Rover. Can also be used by Ciaccona as the definitive Aero Erosion enabler and is the definitive echo for the Erosion DPS Cartethyia, providing a small window of time-slowing effect when used.

Primary Aero Crown of Valor 4-cost echo. Can group enemies with its echo skill, great for mobs of enemies, and its summon-type Echo Skill will not interrupt any combo.

Provides an unconditional Heavy Attack DMG and Havoc DMG boost, and deals additional DMG in multiple instances when Havoc Bane is applied.

Deals decent Spectro DMG to enemies. Part of both Rite of Gilded Revelation and Pact of Neonlight Leap, good for Spectro Resonators as DPS or Sub-DPS, respectively. Gives 10% All-Attribute DMG Bonus to the Intro Skill of the next Resonator.

Great for providing passive Glacio DMG Bonus and Coordinated Attack DMG buffs, and the skill itself deals 270%+ Glacio DMG. Less useful than Hecate in most situations since not all Coordinated Attack resonators scale off Glacio DMG Bonus.

The main echo for the two characters that use Spectro Frazzle: Zani and Phoebe. A better option over Nightmare: Mourning Aix because it can also provide Heavy Attack DMG unconditionally, though it is hard to farm as a 3-cost echo.

Has a great passive for Aero units that scale off Echo Skill DMG. Summon-type Echo that is easily weaved into combos and deals quick, decent Aero DMG upon casting.

Deals Spectro DMG to enemies. Provides Spectro DMG and Basic Attack DMG just by equipping it as the main Echo, and has a unique interaction when paired with the other Twin Nova echo.

Focuses mainly on Sub-DPS in Havoc teams, so it is a bit inflexible. The normal variant may be more useful in non-Havoc team situations. The skill itself deals 300%+ total Havoc DMG.

The best echo for those running the new Frosty Resolve sonata effect. Deals a lot of damage as an echo and does not need to be summoned to provide echo bonuses.

Deals decent Glacio DMG to enemies. A bit niche with the sets the Echo is available in, but otherwise versatile on its own. Provides a good Glacio DMG buff to the next Resonator, boosting the user's sub-DPS potential.

Slightly tailor-fitted to Augusta, since it gives both Electro DMG and Heavy Attack DMG Bonus. The only 4-cost Echo in Crown of Valor, making it high value. This transform-type Echo uses up some time to deal damage, but the stat bonus doesn't require Echo Skill activation.

A bit niche to use since it can only be used by Lupa. It is the only 4-cost in Flaming Clawprint, making it valuable, but its effect performs well with Lupa alone and is a big waste on other units. Only farm if you are building Lupa!

So far only works as the second 4-cost for the 44111 echo configuration of Cartethyia. Buffs are a bit underwhelming, as it buffs both Glacio and Aero DMG Bonuses, and there is no sonata effect that benefits Glacio characters despite buffing them.