Class System

The power to use ability to use the skills of a specific "Class".

Also Called

 * Class Ability
 * Job Skill
 * Job Ability

Capabilities
The user is "part" of a system that give special ability depending on the Class/Category/Job of the user choice.

Fate/ series Universe
the user in this universe must be dead and in the life "reflect" particular "qualifying conditions", then be summoned and create a contract with a mage that supplies the user with mana, the class are:
 * Saber: be legendary "knights of the sword" and/or user of powerfull swords like Excalibur, they excel in delivering powerful burst attacks, have high magic resistence and a skill that give them the ability to drive most of the vehicle and animal naturally (leggendary beast excluded).
 * Lancer: great warrior with high speed and agility that use pole weapon like spears and lances, have high magic resistence and a skill called "battle continuation" that give them the ability of fight fight even with deadly injuries and can remain alive so long as one does not receive a decisive fatal wound.
 * Archer: warrior that use projectile weapons like bow, guns crossbow, etc., their special skill is "Indipendent action" that give the ability of not depend on the mana of the summoner making possible more action that aren't controlled by the summoner.
 * Rider: user under this class are those known for riding mounts, living beasts or human constructs, during their lives, their special skill is Riding (more powerfull of the Saber class) that give them the ability to "drive" everything, dragon excluded.
 * Caster: user under this class were famous Mage, magician, witch, etc., they possess 2 main ability that are "territory creation" (the skill to build a special terrain that is advantageous for magic and mage likte the user) and "Item construction"(the skill to manufacture magical items).
 * Assassin: user under this class are skilled at operating covertly, stealthy, and silently, their main skill is "Presence Concealment" that give them the ability to remain undetected (not invisibility because they hide their presence).
 * Berserker: user under this class must be gone berserk in their lifetime, their special skill is "Mad Enhancement" that raise the physical/power ability in exchange of hindering mental capacities.

NOTE: In this universe it's possible that an user can naturally belong on 2 or more class, in this case the class is choise by the system

Highschool DxD Universe
the user in this universe is reincarnated into a devil using the Evil Pieces, magic chess pieces used by the devil for increase their number, the evil pieces are:
 * Rook: this piece is for fighter that point on defence and attack (like a tank)
 * Bishop: this piece is for mage that obtain a booster into magic related ability
 * Knight: this piece is for fighter that point on speed and agility
 * Queen: this piece have the booster of the Knight, Bishop and Rook, making it the most balanced and powerful piece
 * Pawn: this piece have a special skill called Promotion that give them one of the trait of the other pieces, in the case of the Queen Promotion the pawn gain a special barrier

NOTE: the king piece is not included because in the series until now it's not show if the king have special ability or not

Limitations
-It's possible need that the user must reflect some condiction for "enter" into a class -It's possible that once choice a class, it's impossible change it -Some class can appear into other universe with different name

Know Users

 * Devil (Highschool DxD); Via Evil Pieces
 * Servants (Fate/series)
 * Final Fantasy characters; Via Job System and similar
 * Disgaea characters