A quick opinion. As much as I like to have one, I think that the Nameless Horror is too strong for the cost. One suggestion to reduce it a tad would be to increase all undead prior to tapping the opponent’s discard and adding the Skeleton. It’s a minor change but given that the Skeleton essentially acts (well kind of) as if it has rush giving it a bump before it’s first turn makes it that much stronger.
Okay, I certainly agree that Nameless Horror is powerful. Your proposed change is an easy to make to have the boost come before the skeleton creation, which is what I think it was before. And yeah, it has been very quiet because I haven't had much time to work on the expansion due to a number of factors over the past several months. I am going to spend some time tomorrow trying to wrap up some loose ends and play-test the cards some more, so we'll see how close I can get. There are a few that still need tweaking and few other aspects that need to be worked on (ie, with the dungeons and enemies).