Hey guys. Looking for a little input to make this deck a little more competitive but not some much so that it isn't fun. I think the biggest worry for me is keeping it cheap. Thanks for the feedback
Alright, brace yourself for major revisions. This deck has a lot of room for improvement. (If you're interested in even semi-competitive cheap deck-building, I'd suggesting sticking to one or two colours to keep the mana base on budget. You could easily drop red from this deck and go with Grimgrin, Corpse-Born as your commander, or go mono-black with Ghoulcaller Gisa or Balthor the Defiled.)
Red has very little to do with zombies, but some stuff like [[Ogre Battledriver]], [[Hammer of Purphoros]], [[Gratuitous Violence]] and [[Shared Animosity]] will really help give your deck some more punch in combat.
Most of these spells just aren't efficient enough, don't have any synergy with the zombie theme, or are just plain worse than other options (e.g., Control Magic is way better than Mind Control, but even Control Magic isn't worth running). Don't go overboard with counter spells (Arcane Denial and Counterspell should be all you need) and one-shot graveyard-to-hand spells. A card like Phyrexian Reclamation is worth four or five Dead Reckonings, for example.
Anyway, hope I didn't scare you off with my huge litany of suggestions. I really like your Grixis zombies idea and I want to see it do well
Actually that was exactly what I wanted to hear. I knew this deck was pretty bad, I just didn't know where to start improving. I took you're advice and added some of the cards you suggested. Also went and found a couple that just look fun to play. Not sure how well they fit but I couldn't find any other zombies that really stuck out to me. It is still a few cards short. So hows this look to you?
Also, you chose Marchesa just to keep her colours but I think it's a lazy choice. You aren't abusing her inherit mechanics, like Solrune's Marchesa EDH. You don't need to copy+paste his list exactly, but there's a lot of synergy between his Commander and the rest of the cards. I feel like you're just using the same colours in a deck. You'll have more fun with Marchesa if you go with her abilities instead of just her colour identity.
For example, here are some Zombies that use +1/+1 counters from a quick gatherer search:
1 Lord of Tresserhorn
Mana Sources
11 Swamps
9 Islands
4 Mountains
1 Lonely Sandbar
1 Barren Moor
1 Terramorphic Expanse
1 Evolving Wilds
1 Jwar Isle Refuge
1 Darkslick Shores
1 Dimir Aqueduct
1 Crumbling Necropolis
1 Rupture Spire
1 Command Tower
1 Shimmering Grotto
Creatures
1 Cryptoplasm
1 Nightscape Familiar
1 Warpath Ghoul
1 Bog Raiders
1 Reaper from the Abyss
1 Avatar of Woe
1 Pyre Zombie
1 Gravespawn Sovereign
1 Contagious Nim
1 Geth, Lord of the Vault
1 Ghastly Remains
1 Skinrender
1 Cemetery Reaper
1 Fleshbag Marauder
1 Ghoulraiser
1 Unbreathing Hoard
1 Woebringer
1 Zombie Brute
1 Gravedigger
1 Walking Corpse
1 Consecrated Sphinx
1 Crosis, the Purger
1 Dread Wight
1 Beseech the Queen
1 Dead Reckoning
1 Disturbing Plot
1 Witcher's Eye
1 Death Denied
1 Go for the Throat
1 Animate Dead
1 Desperate Ravings
1 Distant Memories
1 Frantic Search
1 Rooftop Storm
1 Spell Crumble
1 Void
1 Ponder
1 Syphon Flesh
1 Rakdos Riteknife
1 Cancel
1 Death Pit Offering
1 Sign in Blood
1 Ghoulcaller's Chant
1 Grim Discovery
1 Elixir of Immortality
1 Blue Sun Zenith
1 Mind Control
1 Perplex
1 Deep Analysis
1 Fissure Vent
1 Quest for the Gravelord
1 Victim of Night
1 Diabolic Tutor
1 Rise from the Grave
1 Divination
1 Rise/Fall
1 Grim Harvest
1 Doom Blade
1 Slave of Bolas
1 Nicol Bolas, Planeswalker
1 Liliana Vess
Edit: Put into better format for viewing.
The biggest issue I can spot is that you're running way, way too many instants and sorceries. For this to be a Zombie deck of any variety, it needs a lot more zombies. The good news is that zombies are a pretty strong tribe with a lot of the best lords in the game, like Undead Warchief, Death Baron, [[Risen Executioner]], Diregraf Captain and Lord of the Undead and powerful synergies like Graveborn Muse, Vengeful Dead, Gempalm Polluter, Lich Lord of Unx, Relentless Dead, Diregraf Colossus, and Shepherd of Rot. Havengul Lich is a really cool card who just happens to be a Zombie. Deadapult is kind of questionable, but it's a hit thematically (and the name is great).
Lord of Tresserhorn is a neat commander, but Sedris, the Traitor King or Marchesa of the Black Rose are more suited to a graveyard-based deck as zombies will inevitably end up being.
Zombies are also excellent at forming large groups. Army of the Damned and Endless Ranks of the Dead are essential, and are really nasty with Call to the Grave. Grave Titan will also ensure that you stay well supplied with zombies.
Red has very little to do with zombies, but some stuff like [[Ogre Battledriver]], [[Hammer of Purphoros]], [[Gratuitous Violence]] and [[Shared Animosity]] will really help give your deck some more punch in combat.
Your base could be gussied up a little for pretty cheap. Dragonskull Summit, Sulfur Falls, Drowned Catacomb, Smoldering Marsh and Sunken Hollow are all pretty affordable, along with a host of other budget two-colour lands like Auntie's Hove;. Some worse lands like Rupture Spire and Shimmering Grotto could be replaced with mana rocks like Dimir Signet and [[Rakdos Signet]], Talisman of Indulgence and Talisman of Dominance, plus the old standby Sol Ring and probably also Fellwar Stone if you plan on mostly playing multiplayer.
I would cut
1 Bog Raiders
1 Warpath Ghoul
1 Contagious Nim
1 Walking Corpse
1 Crosis, the Purger
1 Divination
1 Doom Blade
1 Quest for the Gravelord
1 Cancel
1 Death Pit Offering
1 Grim Harvest
1 Mind Control
1 Distant Memories
1 Death Denied
1 Dead Reckoning
1 Perplex
1 Void
1 Cryptoplasm
1 Desperate Ravings
Most of these spells just aren't efficient enough, don't have any synergy with the zombie theme, or are just plain worse than other options (e.g., Control Magic is way better than Mind Control, but even Control Magic isn't worth running). Don't go overboard with counter spells (Arcane Denial and Counterspell should be all you need) and one-shot graveyard-to-hand spells. A card like Phyrexian Reclamation is worth four or five Dead Reckonings, for example.
Anyway, hope I didn't scare you off with my huge litany of suggestions. I really like your Grixis zombies idea and I want to see it do well
1 Marchesa, the Black Rose
Mana Sources
11 Swamps
9 Islands
4 Mountains
1 Lonely Sandbar
1 Barren Moor
1 Terramorphic Expanse
1 Evolving Wilds
1 Jwar Isle Refuge
1 Darkslick Shores
1 Dimir Aqueduct
1 Crumbling Necropolis
1 Rupture Spire
1 Command Tower
1 Shimmering Grotto
1 Sol Ring
1 Obelisk of Grixis
1 Khalni Gem
1 Dimir Signet
1 Rakdos Signet
Creatures
1 Thraximundar
1 Archetype of Finality
1 Lord of Tresserhorn
1 Dregraf Captain
1 Diregraf Colossus
1 Ghoulcaller Gisa
1 Grave Titan
1 Risen Executioner
1 Grimgin, Corpse-Born
1 Havengul Lich
1 Lich lord of Unx
1 Lord of the Undead
1 Undead Warchief
1 Nightscape Familiar
1 Reaper from the Abyss
1 Avatar of Woe
1 Pyre Zombie
1 Gravespawn Sovereign
1 Geth, Lord of the Vault
1 Ghastly Remains
1 Skinrender
1 Cemetery Reaper
1 Fleshbag Marauder
1 Ghoulraiser
1 Unbreathing Hoard
1 Woebringer
1 Zombie Brute
1 Gravedigger
1 Consecrated Sphinx
1 Dread Wight
1 Phyrexian Arena
1 Counterspell
1 Arcane Denial
1 Gravepact
1 Beseech the Queen
1 Disturbing Plot
1 Endless Ranks of the Dead
1 Army of the Damned
1 Call to the Grave
1 Witcher's Eye
1 Go for the Throat
1 Animate Dead
1 Frantic Search
1 Rooftop Storm
1 Spell Crumble
1 Ponder
1 Syphon Flesh
1 Rakdos Riteknife
1 Sign in Blood
1 Ghoulcaller's Chant
1 Grim Discovery
1 Elixir of Immortality
1 Blue Sun Zenith
1 Deep Analysis
1 Fissure Vent
1 Victim of Night
1 Diabolic Tutor
1 Rise from the Grave
1 Rise/Fall
1 Slave of Bolas
1 Nicol Bolas, Planeswalker
1 Liliana Vess
1 Liliana of the Dark Realms
1 Liliana, Heretical Healer/Defiant Necromancer
Gods
1 Erebos, God of the Dead
1 Gravespawn Soverign
1 Grimgrin, Corpse-Born
1 Consecrated Sphinx
1 Ghoulcaller Gisa
All of those cards are capable of winning a game if left unchecked. Then you got stuff like:
1 Zombie Brute
1 Archtype of Finality
Those won't win games on their own merits.
Also, you chose Marchesa just to keep her colours but I think it's a lazy choice. You aren't abusing her inherit mechanics, like Solrune's Marchesa EDH. You don't need to copy+paste his list exactly, but there's a lot of synergy between his Commander and the rest of the cards. I feel like you're just using the same colours in a deck. You'll have more fun with Marchesa if you go with her abilities instead of just her colour identity.
For example, here are some Zombies that use +1/+1 counters from a quick gatherer search:
1 Deathbringer Thoctar
1 Drakestown Forgotten
1 Gavony Unhallowed
1 Mikaeus, the Unhallowed
Granted, all of these might not be the best but they'd be way more synergistic than what you currently got.
Also, you're playing a Zombie deck and you're not using Gray Merchant of Asphodel? Damn man.
This is without touching your Spells section, which I think has too much Single Target stuff instead of good sweepers.
Mid-Tier: Marchesa Aggro Rose Asmadi Get Dire Tymna Ikra Woke Women Tiana Aura Angel Ruric Thar SMASH Smasher Kraum Mana Positivity Zur Slides
Filthy Casual: WUBRG Jodah WUBRG WUBRG Fatties WUBRG Gahiji Vigilant Vengeance Ezuri Mysterious Morphs