A bit more mundane than the scores of horrors and demons we've just gone through in both Black and Blue, but I do like the idea of a giant grinning snake-hallucination with hands tormenting someone and screwing over their head
This Emerald/Steel Aggro deck is the cheapest one on this list but yet can still win a lot of games thanks to its combination of aggressive lore gain and tempo
You can see that particularly with the Petra Sphinx artwork here, which does admittedly look quite holy with the wings and lion mane
The extra combat bit in the chaos effect is really where the meat of this plane lies, as theres a lot of decks that can do silly things with an extra combat step
Cards like Boartusk Liege, Raph's Bravado, Hound Tamer / Untamed Pup, Unnatural Growth or Zopandrel, Hunger Dominus are also good ways to pay off having a board full of werewolves
That's very synergetic with herself, and other manifested dread, morph and disguise stuff here