And if we're planning to have Marlowe and RJ sneak around to find the Lochnar, they probably don't need disguises. That said, with Phaedrus' polymorph rules, Polymorph Any Object doesn't exist. We'd need a Greater Polymorph, which we can do with a Wish, but we only get one of those per day. We also can't just get Sammael to bring us scrolls, since you can't cast from those.