Hmm, I suppose it's because those beings are composed of the energies? It requires all three, because that combination is what makes them Magical Beings... Or something like that, I'm sure.

Anyway, I would love to play an Ouramancer, then. Are there any superstitions surrounding them, or downsides to using the magic that could play into a character background? And what about religious groups in Lismos? Are there any who look at godspeak as blasphemy, or anything like that?