Hi entropize, thanks for the suggestions! I had a chance to try
Liliana Dreadhorde General but too often it felt like it was too slow for a deck with such low curve, so I cut her off. With how the deck is structured, it is quite easy to get
Gutterbones back, plus the mana from
Priest of Forgotten Gods can often be spent for the
Gutterbones, which can be handy if you can't do anything else! That's why I think
Sanitarium Skeleton is no match for
Gutterbones (plus the 2 power makes a big difference in trades and player damage, don't underestimate it!).
Piper of the swarm looks promising enough, it could be a good replacement for the
Dreadhorde Butcher, I will certainly try it out, as well as
Witch's Cottage, but I
fear that there won't be enough Swamps in play to make it work. Thanks again!