That's obviously meant to be a teaser ad of the enigmatic type, designed to make one curious and therefore more attentive for a follow-up ad that better explains itself and the product involved. The thing is, I have no idea what the item being advertised actually turned out to be. The name Namalk the Seventh doesn't ring a bell. I looked through the rest of the issue to no avail, so I also did a quick search of the next four issues. Nothing seemed to connect back to this tiny illo of a mysterious cloaked figure approaching a castle.
Maybe I just missed it. Or maybe the people who bought this add never followed through by purchasing a follow-up ad. Or maybe the follow-up isn't clearly connected back to this teaser (i.e. the ad campaign wasn't designed very well). If anybody knows what's going on here, please leave a comment.
Adventure Hook: Rumors abound in the realm that "Namalk is coming" but no one seems to be able to agree as to who or what Namalk is. A paranoid noble hires the PCs to get to the bottom of this mystery. Until they can assure him of Namalk's identity and purpose, he won't be able to sleep well.