You could have something like the Tamer which uses a whip and perhaps abilities that "release" monsters/pets for short periods of time something like MCH has with their turrets or something. Perhaps a mystic swordsman class or something that imbues their swords with various elemental powers? Something like Celes from FFVI or the mystic swordsman class from FFV. Or they could make something else completely out of their butts... kinda like Sage (sorry that reveal trailer looked bad =p)