Apprentice Ring
Common ring, the holder can get a little crit bonus
Mercenary Ring
A primary ring, the holder can get a small crit bonus
Golden Ring
Intermediate ring, the holder can get a certain crit bonus
Shadow Ring
Advanced ring, the holder can get more crit bonus
Warrior Ring
Super ring, the holder can get a lot of crit bonus
Holy Ring
The sacred ring, the holder can get a huge crit bonus
