I've always wondered if Avak's prison power requires knowledge of the prisoner's powers before hand or if the cage changes depending on the prisoner.
If you were a Toa, which element of the known Toa elements would you command and what would your mask of power be, what Toa tool would you carry and would you be a Toa Nuva?
I think that Nokama and the other Toa Metru were much too hard on Vakama when they became Toa, they had no excuse for their behavior. Its a shame that it took the betrayel of Vakama to teach them the error of their ways. Norik should should have told them straight out that it was their fault that Vakama defected, as it was their fault.