Law of Harmony - Utility Sonata Set

Casting Echo Skill grants 30% Heavy Attack DMG Bonus to the caster for 4s. Additionally, all Resonators in the team gain 4% Echo Skill DMG Bonus for 30s, stacking up to 4 times. Echoes of the same name can only trigger this effect once. At max stacks, casting Echo Skill again resets the duration.