You have been warned. Simply put, Narsil is a sword that, years after the events of the current season of The Rings of Power, would be wielded by Isildur (yes, that Isildur) to help defeat Sauron ...

Rings of Power has introduced Narsil, the sword famously broken when Elendil fought Sauron (& which Isildur claimed) but there's more to the story. Sauron fought multiple battles in The Lord of ...