"No rituals, exactly." Isannah's frowning, tensing a little. "There are other ways to...trials and error." She makes a face. "if you've got something not working properly that might come in handy someday, you save it, and you wait against the day it might be useful. "Guess what the corrupted sort can do when they're shoved on someone?"
It's not a great thing to recall, or really think about, but well...It's what it is?