Cortosis ore could temporarily shut down lightsabers, which would have been a huge advantage in battling the Sith, but the Jedi never used it. Cortosis was an extremely rare material, and even in ...

Cortosis, a mysterious metal that can short out lightsabers, popped into The Acolyte, prompting a deeper look at the element's history. The lightsaber is an excellent weapon. George Lucas borrowed ...