Nya's return in crystalized

The moment you realise they could have used another way to take nya's powers without breaking out a dangerous villain like asphera from prison:the staff that master Chen used to steal THEIR powers back in the tournament of elements,Chen said that the crystal that was used in that staff was one of the many crystals that can be obtained from the crystal cave in his island,all they had to do was go to Chen's island to get one of these stones to save nya, and since skylor is Chen's daughter she...