1) Holy water has a deterrent effect on ayakashi. When combined with weapons, those weapons will cause more painful wounds and being struck with them might cause ayakashi to retreat. (However, they still won't be capable of destroying an ayakashi -- only a god wielding a shinki can do that.) As for blight, holy water splashed from a weapon would wash away blight just like holy water from any other source.
2) The western district's changes tend to occur when no one's looking, which is to say that rather than observing the terrain changing, characters might notice that the terrain has changed, especially in regards to distances shifting. Temples will generally remain in the same places, and their grounds do not change unexpectedly. Markers that are set outside the temples may be found further apart, shifted in relationship to each other, or (most rarely) missing completely. As for using a Borderline, that spell has to be actively maintained by the shinki casting it. It doesn't cause a huge energy drain, but it does require concentration and proximity, so a shinki would have to be nearby making an active effort to keep the Borderline up, and the terrain wouldn't change while the shinki was there watching.
When it comes to building outside the temples, he'd be able to infer from his experiments with the markers that there aren't any reliably stable places in the western district that are outside of temple grounds. However, the grounds of abandoned temples appear to be as stable as the grounds of inhabited ones.
no subject
2) The western district's changes tend to occur when no one's looking, which is to say that rather than observing the terrain changing, characters might notice that the terrain has changed, especially in regards to distances shifting. Temples will generally remain in the same places, and their grounds do not change unexpectedly. Markers that are set outside the temples may be found further apart, shifted in relationship to each other, or (most rarely) missing completely. As for using a Borderline, that spell has to be actively maintained by the shinki casting it. It doesn't cause a huge energy drain, but it does require concentration and proximity, so a shinki would have to be nearby making an active effort to keep the Borderline up, and the terrain wouldn't change while the shinki was there watching.
When it comes to building outside the temples, he'd be able to infer from his experiments with the markers that there aren't any reliably stable places in the western district that are outside of temple grounds. However, the grounds of abandoned temples appear to be as stable as the grounds of inhabited ones.