Tiers of skills

"Oh, there are five tiers of mastership of every skill. It starts with amateur, to beginner, expert, master, and grandmaster. One must reach 10 levels of each tier to reach another realm of the skill. So in total, to become a true grandmaster in this skill you will need to train it for 50 levels, but make sure that the higher the level of the skill the harder it is to train it. But it is also awarded with reduced costs of usage, and might sometime give higher damage."

Said the instructor.

"Then for the rarity of the skill. It starts with common, rare, unique, epic, desolate, mythic, and legendary. Going from lowest to highest in rarity. As for the legendary skills, the only way to obtain them is by having access to an S class inheritance. Anything below the legendary rank can either be obtained via learning under an accomplished master, or finding rare skill books."