Board Thread:Questions and Answers/@comment-4623180-20120906134039/@comment-5498755-20120911105718

Realistically she would be dead. I can understand the first time when he healed her. But the other times specifically the time he conjured the wind-spell she was knocked out and was found by Agravaine.

In the last 20 minutes of Season 4 Merlin finally shows his intent to atleast deal blows. When he blows Morgana back with a spell. It was very apparent that Merlin could see that she was hurt as she was holding her side while fighting Gwen.

Morgan told Digital Spy that his young wizard character is in a "ruthless mode" in the next series ( http://www.digitalspy.co.uk/tv/s53/merlin/news/a396907/merlin-stars-hint-at-series-five-theres-the-biggest-threat-yet.html).

I would say at first Merlin was very merciful but at the end of season 4 he changed his ways (maybe even beliefs for all we know) and is forming into what he is destined to be.