The Showdown with Morgause was a short battle which occured during Arthur's Rebellion of Camelot and it happened between Merlin, Gaius and Morgause. They all used Stunning Spells to try to defeat their opponents. The battle started when Morgause attacked Merlin when he attempted to empty the Cup of Life of the blood within to destroy the immortal army. Gauis then arrived and attacked Morgause before she could kill Merlin. As Morgause attempted to attack Gaius, Merlin recovered and threw her against a pillar, badly wounding her. This ended the battle and allowed Merlin to empty the Cup, destroying the immortal army (The Coming of Arthur: Part Two).