"It's kind of sounding like we need to be prepared for that eventuality anyway. But maybe one rune and something to aim it at a rock, two layers of protection, and then if it targets the rock we know scrolls work, if it targets something else we know exactly what it'll do no wiggle room and know that copied scrolls may partially work, and if it doesn't do anything we know it needs more than a Xerox copy of an inscription to go off."