Vas Tym Sanct Grav

When Squirt interrupts him in his bolthole, the wizard Annon says he should create a Warding to block off that entrance, and uses the magic syllables Vas Tym Sanct Grav. However, there was not enough time to prepare the spell before the Britian City guards found the entrance, so it was never cast.

Trivia

 * Due to the nature of the warding and words of power used, it is likely that this is a lesser version of Energy Field.