With the right training path, the caster of 213 can experience a repelling effect from adjacent rooms. For example, a critter coming in from a SW connection room appears to those in the sanctified area as 'a momentary flicker of white light appears from the southwest as a shadowy apparition of a hooded figure appears to recoil from the area'.

Say start at 33% odds up to 66% chance, with a reduction of 5% for each room more than 2 connecting to the area.

Dragons r Real