Azadei blinked a this question, and nodded. "Nethys? The god of secrets and magic. They say he was an ancient Osiriani king, who learned too much, and both ascended to godhood.. and was driven mad, alternating between seeking to preserve knowledge, and to destroy it, and is said to wear a two-faced mask. Masks are very important to his religion, but... I don't know enough of the specifics to say more, aside from the fact that this is definitely a place that was built by his followers."