Ancient Staff

The Ancient Staff was used by a powerful Toa long ago, in the ancient times. The Toa was killed by Tonga, who then used the Staff as a part of his new body. Yeah, the same body that he had in the last adventures too.

When Tonga was killed in the end of Tonga's Attack, the parts of his body were broken and separated. When the power flew through Henkka and his two friends, the power fixed the Ancient Staff and it went to Henkka who started to use it in his Mega Matoran form. He didn't know what powers it had but he simply used it to channel his Mask of Electricity's electricity power.

In False Reality, Ancient Staff was the tool that Henkka had to get in order to get a portion of his memory back.

The tool was wiped from excistence as a part of Tapio's Mistakes and it was replaced by the Double Sword Wings