Tahu raised one of his magma swords, prepared to swat the incoming missiles away.  As he did so, Hakann's eyes glowed.  The Piraka's heat vision stuck the ground at Tahu's feet, turning the stone to magma.  It was Lewa Nuva who spotted it and grabbed the Toa of Fire's arm yanking him away from the pool.

 ~Greg Farshtey, Bionicle Legends #1, Island of Doom, pg 84