Talk:Cú Chulainn/@comment-30669433-20180621042556/@comment-30468100-20181013164255

What lead to his downfall was being forced into eating dog meat, breaking one of his all important Geas (because there was a massive tabboo against refusing hospitality, he had no choice but to accept a meal made for him, but the old crone who made the meal had been paid off by Lugaid to make it out of dog meat).

Medb then had her conspiritors craft three enchanted spears for Lugaid, each prophecied to kill a King. The first spear killed Cu's Charioteer when thrown mid-battle (Laeg, King of Chariot Drivers). Before he could gain control of his chariot, the second killed his horse (Liath Macha, King of Horses). Thrown from his Chariot, he was unable to defend himself as the last pierced him fatally (as the son of the Fairy King Lugh and effectively the future King of Ulster should he win the war, the spear did fatal damage to him).