"Not without assistance, or a great deal of study. That was not in my studies of sorcery."

Which, come to think about it, made Tazendra wonder if she'd kept Penrosian magic with her. Her theory had been that she could use Penrose's magic because of her connection with the Lantern, just as she'd done with the Orb in her home. But if the Elos were gone and shattered, and her lantern was extinguished...