Nuada Airgetlám (Nuada of the Silver Arm)

In Irish mythology, Nuada, known by the epithet Airgetlám (Airgeadlámh, meaning "silver hand/arm"), was the first king of the Tuatha Dé Danann. He is also called Nechtan and Nuadu Necht, and is sometimes believed to be Elcmar, husband of Boann. He is mostly known from the tale in which he loses his arm or hand in battle with the Fomor, and thus his kingship, but regains it after being magically healed by Dian Cécht to lead the Tuatha in battle again. His sword was one of the 4 treasures of the Tuatha Dé Danann. No one ever escaped from it once it was drawn from its sheath, and no one could resist it. The sword is also described in the Tain legend as "Nuadu's Cainnel"—glowing bright as a torch