Ice Sword

The Ice Sword was Kopaka's Toa Tool as a Toa Mata, which he wielded along with his Ice Shield. He used it to control his power over Ice. It was transformed into the Ice Blade when Kopaka became a Toa Nuva.

Trivia

 * In Bionicle Heroes, it is the weapon Matoro starts out with. One difference between these weapons is Matoro's opens up to shoot ice.