They went to a large chamber with herbs, gems, tomes, pots, measuring cups, all under high crystalline domes. "Make me a tonic that will make me invisible," laughed the king in a tone some would call risible. So Umphatic Faer and Lanthippus Mintburk began to work, mincing herbs, mashing metal, refining strange oils, cautiously setting their cauldrons to burbling boils, each on his own, sending mixing bowls mixing, sometimes peeking to see what each other was fixing.