Skills are divided into three secondary levels: S-, S, S+. Increasing your level is essential to have a deep understanding of its functioning. Depending on how quickly you comprehend your skill, it will increase faster. At the same time, rank matters, as you won't be able to use large amounts of mana/aura to activate such skill.
>SSS
>SS
>S
>A
>B
>C
>D
>E
>F
Monetary system
>copper coins
>silver coins
>gold coins
>platinum coin
> amethyst coin
Currency Conversion
100 copper coins = 1 silver coin
100 silver coins = 1 gold coin
100 gold coins = 1 platinum coin
1,000 platinum coins = 1 amethyst coin