The ice sword1, 2, 3, also called the ice blade4, 5, 2 or simply a sword6, 7, 8, was a sword that served as Kopaka's Toa tool when he was a Toa Mata. Kopaka used it to channel and focus his elemental power of ice.6 It could instantly freeze anything it touched.9, 6, 4, 5, 2 Kopaka could also create avalanches and control ice floes with a single swing of the sword.9, 7, 8, 4, 5, 2 The ice sword could slice and melt through ice7, 8, 4, 5, and it could slice through other hard materials.7, 8
The ice sword was created by Artakha, and Kopaka received it before his training on Daxia.10, 11 When Kopaka was transformed by energized protodermis into a Toa Nuva, the ice sword presumably transformed into the ice blade.