The Rulers' Blade (also known as the Great King's Sword, or Ar'Cor'Kerym in Elven, and sometimes referred to as the Crownblade), is one of three Elfblades created in ancient Cormanthyr to help the elves establish a ruling family. This particular blade is used to name the Coronal, monarchial ruler of the kingdom of Cormanthyr, leader of the elves.