What they said. Glamours are what you want. Seelie Magic is available if he also wants to heal wound and strike down his foe's with Summer's flame, but for Illusions of all sorts, all you need is Glamour.
To answer your question about Lawbreaking: Illusions break none of the Laws by default, though specific mind-manipulating ones could in theory. Glamour, however, most certainly doesn't.