Synergist is a role which mainly bestows buffs on the party, which are divided into augments and defense buffs. Sazh Katzroy and Hope Estheim specialize in Synergist, being able to learn most spells, but Sazh specializes in augments, while Hope specializes in defensive buffs. Oerba Dia Vanille and Oerba Yun Fang are capable of learning higher tier buffing abilities, which are more potent, but less durable. However, Vanille is the only character who can't cast Haste, but has access to elemental defenses; and Fang only learns Veil beyond high-tier Synergist abilities.