Morphable Echo - Flamewing's Shadow

Open to obtain a random Echo of the following Sonata Effect: Flamewing's Shadow. 3pcs Set: Dealing Echo Skill DMG increases Heavy Attack Crit. Rate by 20% for 6s. Dealing Heavy Attack DMG increases Echo Skill Crit. Rate by 20% for 6s. While both effects are active, gain 16% Fusion DMG Bonus.