The description of the magic circle ritual includes the following text:
An affected creature whose level is lower than your Arcana check result minus 10 cannot pass through the circle, affect creatures through the circle’s boundary, or affect the boundary in any way. Other creatures of an affected origin take force damage equal to your Arcana check result when passing through the boundary, but doing so breaks the circle.
What is the difference between
An affected creature and
Other creatures of an affected origin in this description? Can creatures of a given origin pass through the circle or not?