I did not like this episode very much as I usually enjoy all the twilight zone shows. First of all the special effects are so poor and cartoonish, just look at the scene where Merlin has his magical staff magically appear in his hand, that was so 1960 special effects. Second of all the story is not well told and I couldn't feel related to any of the characters.
I am not saying it is horrible episode it just seems as if it was done with no heart and no passion although the acting from Lancelot is pretty good.
Good watch but nothing special.