After finishing the An Empty Vessel quest, a Blue Mage (BLU) can employ the legendary arts of the Aht Urhgan Immortals, a unit of elite imperial special forces. These formidable fighter-mages employ elegantly curved blades for close combat, while decimating their enemies from afar with fell magic mastered from their opponents.
Blue Mages are a versatile melee-mage hybrid job. Through the careful setting and application of blue magic spells, this job can adapt to almost any situation. They also have access to a wide range of Job Traits.
Unlike other magic spells, it is not possible to use Blue Magic as soon as it is acquired. First, the spells you wish to use must be set.
Point Total/Maximum. Each Blue Magic spell is assigned a point value (Blue Magic Points). The level of the Blue Mage determines the maximum number of points available for setting spells.
Maximum Number of Set Spells. The maximum number of Blue Magic spells that can be set to be active at one time is also determined by the Blue Mage's level. This maximum number may decrease when the Blue Mage is under a level restriction and so the set numbers are assigned a color for easy reference.
In order to learn a spell, the enemy must be claimed to the Blue Mage or his/her party or alliance at its time of death. If the enemy is not claimed to the Blue Mage, party or alliance at its time of death, the spell cannot be learned.
The exception to this are Wildskeeper Reives. Whether or not the Blue Mage needs to have acted on the monster before death is unknown.
The monster must attempt to use the ability ("The monster readies <Spell>.") in order for it to be learned.
It is not necessary for the Blue Mage to be the target of the ability, for the Blue Mage to perform any action upon the enemy, nor for the ability to fully execute (it may miss, have no effect, be stunned, intimidated or paralyzed) in order for it to be learned.
Blue Magiccannot be learned if the Blue Mage is K.O.'d at the time that the enemy is defeated. However, it is possible to learn the spell if the Blue Mage is raised before the monster is defeated.
The exception to this are Wildskeeper Reives. It is possible to learn Blue Magic even if you are dead by the end of the fight, however it seems that you have to join the hate list of the monster at least once.
Blue Magiccannot be learned if the Blue Mage is outside of EXP range at the time that the monster is defeated ("You are too far receive experience points"). However, it is possible to enter EXP range, even from a different zone and even after the monster has used the ability, and still learn it.
It is possible to learn spells from monsters that check as Too Weak.