Black Mage
Human, Moogle

Essentially, the Black Mage is the most basic and advanced level for elemental Black Magic. Fire, Blizzard and Thunder are the are not really the best Black Magic ability, but it's basically the only offensive move that they learn. Return Magic is probably the best reaction command for Magic Users. Despite some promising aspects, don't try to make Fighters learn this job right away, there's no reason why you want to use some effort for some black magic which really won't aid you when you have low MP.

Black Magic
Ability	Learned	AP	Type	Effect
Fire	Rod	100	Attack	Minor Fire Damage
Fira	Firewheel Rod	200	Attack	Mild Fire Damage
Firaga	Flame Rod	300	Attack	Major Fire Damage
Blizzard	Rod	100	Attack	Minor Ice Damage
Blizzara	Sleet Rod	200	Attack	Mild Ice Damage
Blizzaga	Chill Rod	300	Attack	Major Ice Damage
Thunder	Rod	100	Attack	Minor Thunder Damage
Thundara	Thunder Rod	200	Attack	Mild Thunder Damage
Thundaga	Thor Rod	300	Attack	Major Thunder Damage
Return Magic	Black Robe	300	Reaction	Counter Any Magic attacks with Same Magic
Geomancy	Sage Robe	300	Support	Increases Elemental Power
Black Combo	Mythril Staff	100	Combo	Use JP to execute a Combo