- "In case you're wondering why we're down here, it's because I wanted to get us outside the Brakebills Protective Cordon. That's a defensive magical barrier that extends out from the House in all directions."
- ―Henry Fogg
The Brakebills Protective Cordon is a magical barrier that surrounds the campus of Brakebills University.
To prepare the Fifth-Year graduates for their lives outside of Brakebills, Dean Fogg brought the students outside of the Protective Cordon to bind a Cacodemon to them. Fogg explained that after the attack by The Beast, the students were already exposed to the dangerous entities they may face, and they would need something to protect themselves.