Addendum: Black is a stratagem, which obeys different usage rules than typical Job Abilities.
When Addendum: Black is used, it upgrades Dark Arts to allow casting of the below listed Black Magic spells until death, changing to Light Arts, or entering another zone.
Addendum: Black consumes one Strategem charge, but one use will last as described above. It also resets the remaining time on Dark Arts to 2 hours.
The magic skill bonus to enfeebling, elemental, and dark) from Dark Arts remain unchanged. The MP cost reduction and reduced casting time for Black Magic will also remain the same.
Addendum refers to extra pages added to a book. Along with the Errata, which are corrections to mistakes in a book, they are additions to a book that are given out after its initial release. Addendum is a fitting word: it adds more pages to your Grimoire, allowing you more spells to cast, and it was released after Scholar's initial release.
Macro Syntax[]
/ja "Addendum: Black" <me>
Spell List[]
The addendum grants access to the following spells: