For every point of the entire party’s maximum Energy, the Elemental Burst DMG of the character equipping this weapon is increased by 0.12/0.15/0.18/0.21/0.24%. A maximum of 40/50/60/70/80% increased Elemental Burst DMG can be achieved this way.
In Game Description
A naginata forged from luminescent material deep in the ocean depths. It was once the posession of the tengu race.
How to Get Wavebreakers Fin?
Obtainable from exclusive weapon banner
Weapon Upgrade Materials
Here’s all material used to upgrade Wavebreakers Fin polearm: