The Black Cauldron/The Black Crochan

The Black Cauldron, also known as the Black Crochan, is a magical cauldron. It once belonged to the three enchantresses Orgoch, Orwen, and Orddu, who live in the Marshes of Morva. They leant it to Arawn, the Death Lord, who used it to create an army of undead, unstoppable warriors. This evil corrupted the cauldron, and now it is useless for anything except making more Cauldron Born warriors. When Arawn did not return the cauldron at the appointed time, the three witches stole it back from him. In this story, Gwydion arranges a mission to try to obtain and destroy the cauldron. Taran finds it in the Marshes of Morva, and exchanges his magical brooch for it. However, the cauldron can only be destroyed if a person willingly sacrifices their own life to do so. Ellidyr does exactly this at the end...