[ Orpheus nods along, taking another can off the shelf and handing it to Peregrine. He knew that last part, at least, though he doesn't feel the need to tell her that she's stating the obvious. Something does seem to occur to him after a moment, though, and he says, ]

If the Wizard is powerful enough to make unbreakable glass and and earthquake and make a knife disappear out of midair, isn't it possible they could just reseal cans they've tampered with? Or do something to them without even opening them.