the toa nuva reveal that the lightstones that come up from the canisters resting spot are the key to awaking mata nui, they figure out that ignika could awaken the great spirit by removing his mask and placing it in the center of the codrex. however, in doing so ignika would have to sacrifice his life as a toa, something he has vowed never to do, and he tries to destroy them when he hears the news. however, when matoro and how he gave his life to save the entire universe is mentioned, ignika finally decides to sacrifice himself.