Here is my take with [[Nevinyrral, Urborg Tyrant]] at the helm. He wipes the board but doesn't hit our walkers!
https://www.moxfield.com/decks/B3ZpvZe55ECAnyDuxgwwgw

The deck plays cantrips and some counters in order to dig and protect our walkers. We want to play walkers to gain us value like [[Ob Nixilis Reignited]] who lets us draw as well as remove threats, as well as walkers like [[Teyo, the Shieldmage]] and [[Kasima, Enigmatic Mentor]] who create tokens to protect our walkers and put up some shields. We run cantrips that also proliferate and cards like [[Core Prowler]] and [[Martyr for the Cause]] which proliferate on death, which is great because Nev will wipe them out.

The deck wants to continuously wipe our opponents (and sometimes us) out to create hordes of the undead. How do we do this? Well saccing Nev of course! There's a few ways this deck sacs Nev:

1. Through creatures like [[Kels, Fight Fixer]] or [[Pitiless Pontiff]] who are great outlets because they protect themselves from Nev with indestructible.
   
2. Through spells that require saccing a creature in their cost like [[Blood for Bones]], [[Spark Harvest]] or [[Costly Plunder]].
   
3. My favourite way: create copies of Nev using cards like [[Quasiduplicate]], [[Sakashima's Will]] or creature clones like [[Clone]] and [[Mirror Image]]. Doing so allows us to sac our original Nev due to the legend rule, pay 1 to wipe and then get the ETB trigger of the clone to make a horde of zombies. We can abuse this even further with cards like [[Supernatural Stamina]] and [[Kaya's Ghostform]] which allow us to bring back our original Nev, allowing us to sac our newly made clone, pay 1 and then double up on our zombie horde army.
   

The deck comes in at $25.24 on Moxfield using the update to cheapest option (I'm from Canada and don't use TCGPlayer but I think this estimate is pulled from that site).

If the extra $0.24 is a gamebreaker I'll look to make a swap for one of the more expensive cards in the deck. All in all there's 11 walkers, I really wanted to fit [[Ashiok, Dream Render]] in but couldn't find the right way to get it to work. I haven't had much time to playtest but I think it should run fairly well.