Glorified in numerous songs for their healing and purification talents, the white mages were, despite themselves, victims of their power and men's thirst for power. Because it was the origins of great disasters in the past, white magic was abandoned and banished. Those who restored it, the Gridanian Padjals, did not want to repeat the errors of the past, and so they only pass on secretly the white magic knowledge to the few people who have proved their worth.
The white mage is the ultimate hope of adventurers, healing the wounded and dying persons, thus becoming an essential ally in battle.
The white mage is a specialization of the conjurer in curing and supporting magic, as such he has the same role: healing and keeping his party alive. However he now possess a few more abilities and enjoys a significant boost in his statistics which makes him even more reliable. At a high level, the white mage is unavoidable and totally replaces his initial class, because of the fact that he did not lose anything when he specialized. But do not rest on your laurels, because the survivability of your party is in your hands and the least lapse of concentration may be lethal.
What about solo?
Even more efficient than the conjurer! Since you have obtained Regen, Esuna and a more powerful healing spell for emergencies, you are now able to resist longer while dealing with enemies even though you have not become stronger.