Mentalists are pure casters with the ability to heal their realm-mates and control the minds of their enemies. Much like the other casters of Hibernia, the Mentalist researches and studies the ways of nature's magic through the Sun, the Moon, and Mentalism.
Their training in Mentalism provides them with crowd controlling spell elements, which prove very useful when in sticky situations on the frontier. Their minor healing abilities make them wonderful backup healers, again, in tight situations. In addition to the offensive power granted to Mentalists by their pets (which they get by charming monsters), they also have damaging spells.