Super Sword of Tengu

The Super Sword of Tengu is an energy weapon created by Oroku Saki.

Creation
Oroku Saki had a number of sword smiths to craft the blade out of Utrom metal. Once it was completed, he attached it to a handle, electrifying it. He quickly came up with a tale of its creation, how it "fell from the Heavens and was crafted by Goblins", and attacked the creators. "I have never seen such power." "Nor will you ever again."

Capabilities
Using magic and Utrom technology, the sword is exceptionally powerful. It can fire sonic waves when swung that can obliterate anything and anyone in its wake (if it doesn't just injure them). Shredder bragged that with the sword he laid villages to waste, brought castles to ground, and vanquished armies, giving hint to its true, terrible and destructive potential.

However, the weapon is so powerful, wielding it is impossible- it shocks (perhaps lethally) anyone who tries to so much as grasp it. There are only two ways to wield the sword: by using a customized protective glove, or by being a true master of ninjutsu, whose powerful will enables them to wield the sword, but not without burning their hands.