[General Gameplay] Echo Attributes and Sonata Effects
Echo Primary and Secondary Attributes
Main Stats
Echo with COST 4:
Percentage of Attack / Percentage of HP / Percentage of Defense / Critical Rate / Critical Damage / Healing Bonus (one of the above), fixed Attack
Echo with COST 3:
Percentage of Attack / Percentage of HP / Percentage of Defense / Elemental Damage Bonus / Resonance Efficiency (one of these), Flat Attack
COST1 Echo:
Percentage of Attack / Percentage of HP / Percentage of Defense (one of the above), fixed HP
Sub Stats
Two-star Echos can be upgraded to level 10;
Three-star Echos can be upgraded to level 15 and possess 3 sub-attributes;
Four-star Echos can be upgraded to level 20 and possess 4 sub-attributes;
Five-star Echos can be upgraded to level 25 and possess 5 sub-attributes.

All sub-attributes can be unlocked by first enhancing the Echo to max level, then using the Rectifier to unlock the sub-attributes.
Different star-level Echos require different Rectifiers: three-star Echos use Intermediate Rectifiers, four-star Echos use Advanced Rectifiers, and five-star Echos use Superior Rectifiers.
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Sonata Effect
Freezing Frost (2-piece set): Increases Glacio damage by 10%
Freezing Frost (5-piece set): After using Normal or Charged Attacks, Glacio damage is increased by 10%. This effect can stack up to three times and lasts for 15 seconds.
Molten Rift (2-piece set): Increases Fusion damage by 10%
Molten Rift (5-piece set): After using a Resonance Skill, Fusion damage is increased by 30% for 15 seconds.
Void Thunder (2-piece set): Increases Electro damage by 10%
Void Thunder (5-piece set): After using a Heavy Attack or Resonance Skill, Electro damage is increased by 15%. This effect can stack up to 2 layers, each lasting 15 seconds.
Sierra Gale (2-piece set): Increases Aero damage by 10%
Sierra Gale (5-piece set): When entering the field using an Intro Skill, Aero damage is increased by 30% for 15 seconds.
Celestial Light (2-piece set): Increases Spectro damage by 10%
Celestial Light (5-piece set): When entering the field using an Intro Skill, Spectro damage is increased by 30% for 15 seconds.
Havoc Eclipse (2-piece set): Increases Havoc damage by 10%
Havoc Eclipse (5-piece set): After using Normal Attack or Charged Attack, Havoc damage is increased by 7.5%. This effect can stack up to 4 times and lasts for 15 seconds.
