Double-edged String

Effects

After battle starts, enhances the next basic attack every 1 second: Basic attacks deal 100% more Batk AoE DMG
If any of the following soundwave requirements is achieved for the first time in battle, grants enhanced basic attacks its corresponding bonus effect:

Bass: After 25 combos, enhanced basic attacks deal an additional 150% current Combo AoE DMG
Mediant: After 25 counterstrikes, enhanced basic attacks deal an additional 150% current Counter AoE DMG
Treble: After 10 skills, enhanced basic attacks deal an additional 400% AoE Skill DMG

Passive:

10% Global ATK

Uses:

Not very good

Where to Get:

Can appear as 2nd choice in Bi-Weekly Events