"Honestly, I think it's some kind of spell, but no one has ever answered." Eilonwy answered before assuring him with, "No, that's fine! To continue; the fight began and Pwyll made very short work of brutally injuring Hafgan. As Hafgan lay on the ground wounded, he begged Pwyll to finish the job and strike him again. But since Pwyll had been told about Hafgan's trick, he refused and told Hafgan that even though it might be something he would regret in the future, Pwyll would leave him alive.

Hafgan was stuck-- he couldn't use his trick to heal, but his lords had just seen him be nearly defeated and in their mind, begging to be defeated instead of fighting and showing his courage. Hafgan told his lords that his death had been met, even if it wasn't physical and he would stop being their king. That's how Annwn went from two kings to one, with King Arawn being the only one recognized moving forward."