| Artiven |
So the way magic circle is worded is ambiguous
Magic Circle:
At 8th level, an occultist learns how to draw magic circles. To draw a circle, he must have chalk, salt, blood, powdered silver, or some other appropriate substance at hand (although he can press a magic circle into a softer surface such as dirt or clay). Drawing a circle takes 1 minute and requires the occultist to expend 1 point of mental focus (either generic focus or focus from any one of his implements). Once completed, this circle functions as a permanent magic circle against any alignment of the occultist's choosing. The circle can't be against a component of the occultist's alignment (if he is lawful good, for example, it can't be a magic circle against good or law). The circle remains until its form is physically broken (for example, if the lines are smeared or the salt is scattered). Only a living creature can break the circle; environmental effects can't break it. An occultist can have only one circle created in this way at a time. If he creates a second circle, the first one loses all its magic powers. This type of magic circle can't normally be focused inward to bind an outsider.
Now I think some clarifications are needed here
1. How big or small can it be
2. If it functions like it says can you draw it and leave it to be effective on a creature
3. Is it affected by dispel magic
4. Can you carry a circle around with you say in a backpack or on a shield