A lot of late game value in this deck. Sense Demons seems good to fetch Krul and some other demons with! Really fun deck, but I'm not sure of it's viability (I've gotten to rank 7 with it).
Gluttonous Ooze, Skulking Geist and The Black Knight are tech cards that can be replaced, but I've found them to be pretty good. Acidic Swamp Ooze might be better than the gluttonous variant? I'm thinking of adding a Defender of Argus and/or Dread Infernal. I've found that Saronite Chain Gang is pretty good, though.