Board Thread:What If?/@comment-5674726-20140809221552/@comment-5674726-20140810030900

Given that Morgana's Saxons heavily outnumbered Arthur's forces and that she and Mordred had magic on their side while Arthur had no defence against it, I'd say that the outcome would have been a curb-stomp victory for Morgana, ending in her taking over as Queen of Camelot.

Unless she knew Nimueh's youth spell (assuming that's what it was, as opposed to a glamour) Morgana would be dead by the time Merlin escaped the Crystal Cave. If she married to produce an heir, Merlin could find himself in a Camelot ruled by Morgana's child or grandchild, while Arthur, Guinevere, Gaius and his friends were long dead.