• 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 best Rejuvenating Glow echo for the best HP-scaling supports in the game. Works with Shorekeeper, the best healer in the game right now.

• The best echo for Sub-DPS that does coordinated attack. ATK increase for the current resonator as long as the coordinated attacks deal critical hits.

• Extremely effective attacker when summoned in battle. ATK is increased for 15s after skill activation. The skill deals up to 270% damage.

• Deals a total of 270% damage everytime it is summoned. Skill can be charged up to three times, so you can use the echo skill multiple times.

• One of the two best echo for Electro DPS. See if your Resonator scales off Resonance Skill or Resonance Liberation. If Resonance Skill, use Tempest Mephis.

• One of the two best echo for Electro DPS. See if your Resonator scales off Resonance Skill or Resonance Liberation. If Resonance Liberation, use Thundering Mephis.

• Primary Gusts of Welkin and Windward Pilgrimage 4-cost echo. Grants Aero DMG Bonus to the wearer with bonus 10% if worn by Aero Rover.

• Primary Aero Crown of Valor 4-cost echo. Can group enemies with its echo skill, great for mobs of enemies.

• Deals decent Spectro DMG to enemies. Part of both Rite of Gilded Revelation and Pact of Neonlight Leap, which are good for Spectro Resonators.

• Great for providing passive Glacio DMG Bonus and Coordinated Attack DMG buffs. The skill itself deals 270%+ Glacio DMG.

• The main echo for the two characters that uses Spectro Frazzle. Better option over Nightmare: Mourning Aix because it can provide Heavy Attack DMG unconditionally.

• Has a great passive for Aero units that scale off Echo Skill DMG. Summon-type Echo, easily weaved into combos.

• Deals Spectro DMG to enemies. Provides Spectro DMG and Basic Attack DMG just by equipping it as the main Echo.

• Focuses mainly on Sub-DPS in Havoc teams, so it is a bit inflexible. 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.

• Slightly tailor-fitted to Augusta since it gives both Electro DMG and Heavy Attack DMG Bonus. This Echo is a transform-type, dealing damage over time.

• So far only works as the second 4-cost for the 44111 echo configuration of Cartethyia. Buffs are a bit underwhelming.

• A straightforward echo that lacks flexibility and utility in battles but still holds its own.

• A versatile echo but relies heavily on specific character synergy to shine.

• Niche use in specific team compositions. Better options exist in the game currently.