Blue Mages are plagued by low Speed, below-average Strength and Magick, average defensive stats, and slightly low Evasion stats, but make up for some of it with high Resilience, unique buffs and diverse spells (which require both time and dedication to learn). One might want to level up the Black Mage job for magick and dual-wield to increase attack power since this class has good movement and weapon to compensate.