Let's see Merlin killed a Wizard with a battle axe last episode and killed two more prople in this one and he's barely gotten started as a Wizard. I wonder how someone so young can do such things and it not effect him at all it would seem. Killing a Griffin to save Lancelot okay no big deal but people even evil ones you would think it would at least require talking with his mentor Gaius about it. But who knows what might go on in the mind of a Wizard.