Commoners of Varta:
To wield spirit; one must have the ability to sense it first. Though Ishit couldn't wield the spirit because of his defective nadis (energy channels), he could feel it.
So commoners are those people who can not sense spirit. According to spiritualists (researchers of spirit), spirit wielders' brains and nadis are different from those of commoners.
There are three main nadis that decide if someone is a commoner or a spirit-wielder. These nadis are called Ida, Pingala, and Sushumana.
The three principal nadis run from the base of the spine to the head,--The ida on the left, the Sushumna in the center, and the Pingala on the right.
If these three nadis are blocked or too thin to carry spirit, the person will not be able to sense spirit.
Even awakeners can't help these people. Such people are called commoners in Varta, and they do menial chores for their betters, spirit-wielders.