This preview ran in Amazing Heroes #14, its August 1982 issue.
Man, those aliens always made me think of big bugs. And if you think that ol' Merlin was a bit of an SOB, you ain't alone. Yet as a hopeless Anglophile, I was suckered in.
Compare it, if you wish to a segment from Twilight Zone '85 called "The Last Defender of Camelot," based on a Zelazny tale.
See you Monday!