How to set up an Apprentice System?

[Fleur]

Before anything else I'm using RPG Maker MV, so if you know how to do this for MV please let me know.

So I'm working with Yanfly's Base Parameter Control and Class Parameter Control Plugins, and I thought of something I would like to have answered. I really like Breath of Fire III and it's Apprentice System. In short you run into a certain NPC and they offer to train you. While you play the game and level up you can return to them and gain abilities based on the number of battles you fought. I assume that part can be done with variables, although how would I go about doing that. The main issue is that whenever you'd level up with a certain Master, your stats would go up differently than if you leveled up without on. An example is Bunyan in Breath of Fire III would get you an extra 2 points of strength on level up along with some extra HP and defense. My question is how would I got about setting up that part of the system as well. The whole you are now being an apprentice to some master, and once you level up, certain stats will increase more while others may not increase/may increase by less?

 

[Andar]

Either use a dynamics traits plugin to add traits with percentage attribute changes by event command.
Or create an "equipment slot" that holds apprentice certificates with those traits. You can either fix them so that the player can't change them (only events), or allow the player to change apprenticeship at will by changing that equipment.