Right now I'm playing this list. I dropped Blood Moon, since red is really strong right now, and everyone fetches basics against the deck anyways, and started running Field of Ruin + Path to Exile. The fact that I'm not running Liliana or Nahiri mainboard means I have way less color requirements, and all the deck truly needs to start functioning is Black mana at turn 1 and RR from turn 3 onwards for Pyromancer. Also in the Blood Moon slot I started using Surgical Extraction. It's really synergistic with the rest of the deck, and is a good answer to many things running around.
At 61 cards because I really don't know what to drop. The deck really shines against UW and Jund in their current iterations. Seasoned Pyromancer is a beast. I kind of miss topdecking Bedlam Reveler but in every other situation Big Peezy is a better card. Army in a can, can be cast turn 3 without having to discard your whole hand, good topdeck, useful effect from the grave, Unearthable, more resillient to grave hate.
Also managing to stick Dreadhorde Arcanist is brutal. Even casting a Looting for free from the grave feels amazing and the card really punishes anything relying on the board(Bolt and Path) or hand(Inquisition and Thoughtseize), or even the grave sometimes(Surgical), aka most strategies. He's really, really, really good, and if he eats removal, then YP does his thing with impunity.
As a sidenote, casting Smiting Helix twice in the same turn, with the lands I have now, is really easy. It's the equivalent of Helix, Snap, Helix with the same overall mana cost and way less color requirements. Another reason I'm keeping Bolts instead of Push is for the slow, steady burn into that danger zone.
I want to get some Plague Engineers, and also toy around a bit with maybe Intangible Virtue, since Big Peezy really increases the ammount of tokens the deck produces. There's much testing to be done right now.