Onyx Wave

Onyx Wave , also known as Darker Side or Black Bane, is a recurring ability in the Final Fantasy series. It is an attack usable by Dark Knights and is a powered up form of their signature Darkness. 
In the games where it appears, Darkness strikes one enemy while Onyx Wave hits all enemies, but Onyx Wave consumes much more HP to use.
== Appearances ==
=== Final Fantasy: The 4 Heroes of Light ===
Darker Side is an ability usable by the Dark Fencer. It consumes some HP to allow the user to attack all enemies.
=== Final Fantasy Dimensions ===
The Dark Knight learns Onyx Wave at job level 5. It consumes a third of the user's max HP to attack all enemies.
=== Final Fantasy Dimensions II ===
=== Final Fantasy Record Keeper ===
=== Final Fantasy Brave Exvius ===
==Non-Final Fantasy guest appearances==
=== Bravely series ===
In and , Black Bane is the job level ability for the Dark Knight asterisk. Both games involve the player character sacrificing 30% of the user's maximum HP to unleash a dark physical attack on all enemies.
== Gallery ==
Darkerside.png|Final Fantasy: The 4 Heroes of Light
FFRK Onyx Wave Icon.png|Icon in Final Fantasy Record Keeper.
FFRK Onyx Wave.png|Final Fantasy Record Keeper.