Kinda sounds like what Harry did when we were starting to rebuild our castle. He asked people for good memories that he could extract to fortify the walls. You did something similar, too?

[That is interesting. It's interesting that other people have similar types of magic and yet the longer Nerdanel speaks, the more Hiro can draw on the differences.] The sanwe-latye is a way of pinpointing things before their point of inception. Something that works even with the things that're intangible. [And knowing what he knows about the cult, that's also not a terrible idea.]

It sounds like a good idea if we can make it work. There's no way to detect when it's in action, is there?