Originally Posted by
Akiza
In Final Fantasy Tactics the Arcanist and Time Mage overlap in terms of skills and abilities since Arcanist is based space-time magic and Time Mage is based on time magic. Also according to the class description in Final Fantasy Compendium Arcanist can't use spells such as Bio, Miasma and Virus because they don't have an affinity for those spells they belong to the Alchemist tree. Arcanist manipulate geometric objects which is what space-time is. Square should just optimize the Final Fantasy Arcanist with space-time magic for mmorpg's and give Bio, Miasma and Virus back to the Black Mage.
As far as Shadow Flare goes it's the Dark version of Flare so it should function like the Black Mage's Flare.