 FACT: When Nokama and the other five Matoran walk up to the Toa Suva  in the Temple, she places her Toa Stone into the Ice section of the  Suva. However, she is a Water Matoran, and becomes a Toa of Water  afterwards (so using an Ice power to achieve this would be  impossible within the laws of Bioncle). The correct Matoran to use  the Ice section would be Nuju, who is an Ice Matoran.