Lore

The beast tribes of Eorzea worship and summon forth beings known as primals, among which are Ifrit, Garuda, and Titan. Yet what is a god to one man is a demon to another, for the city-states of Eorzea see these beings as a grave threat to their collective survival.

In times immemorial, there lived mages who had not only the power to summon the primals, but also the means to transmute the primals’ essences, thus binding them to their will. Known simply as summoners, the existence of these men and women and their arcane art have been all but lost to the ages.
Combat Role

Summoners are able to bring forth strong magical creatures and depending on the creature they have out, their role can change in a party setting. Whatever they choose to do, know that they will do it well with the awesome might of the Primals at their back