Karumonix, the Rat King (Commander) - Expensive Upgraded

Karumonix, the Rat King
Rank #398
33decks
As CommanderAs CardAverage DeckDecks
Bracket
All12345
Budget
Any$$$$
Jeremy Rowe
Mar 20, 2026
Jeremy Rowe
Building Rat Typal With Marrow-Gnawer
These Rats will do a lot more than pull your hair. Let's see what Marrow-Gnawer can do leading a swarm of Rats in Commander.
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Utility Lands
Mana Artifacts
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Marrow-Gnawer
94%inclusion31 decks33 decks
90%synergy
Piper of the Swarm
91%inclusion30 decks33 decks
84%synergy
Ashcoat of the Shadow Swarm
82%inclusion27 decks33 decks
78%synergy
Pack Rat
82%inclusion27 decks33 decks
76%synergy
Swarmyard
79%inclusion26 decks33 decks
73%synergy
Ogre Slumlord
79%inclusion26 decks33 decks
69%synergy
Ichor Rats
70%inclusion23 decks33 decks
67%synergy
Blightbelly Rat
70%inclusion23 decks33 decks
66%synergy
Lord Skitter, Sewer King
73%inclusion24 decks33 decks
65%synergy
Rat Colony
67%inclusion22 decks33 decks
61%synergy
Top Cards
Dark Ritual
79%inclusion26 decks33 decks
12%synergy
Jet Medallion
70%inclusion23 decks33 decks
7%synergy
Bontu's Monument
67%inclusion22 decks33 decks
38%synergy
Ratcatcher
58%inclusion19 decks33 decks
54%synergy
Phyrexian Arena
55%inclusion18 decks33 decks
15%synergy
Deadly Rollick
52%inclusion17 decks33 decks
27%synergy
Crypt Rats
52%inclusion17 decks33 decks
47%synergy
Vraska's Fall
52%inclusion17 decks33 decks
48%synergy
Tangled Colony
52%inclusion17 decks33 decks
49%synergy
Infectious Inquiry
48%inclusion16 decks33 decks
46%synergy
Game Changers
Demonic Tutor
67%inclusion22 decks33 decks
39%synergy
Vampiric Tutor
55%inclusion18 decks33 decks
34%synergy
Bolas's Citadel
36%inclusion12 decks33 decks
8%synergy
Imperial Seal
21%inclusion7 decks33 decks
14%synergy
The One Ring
18%inclusion6 decks33 decks
9%synergy
Ancient Tomb
15%inclusion5 decks33 decks
3%synergy
Field of the Dead
9.1%inclusion3 decks33 decks
8%synergy
Opposition Agent
6.1%inclusion2 decks33 decks
-3%synergy
Mana Vault
6.1%inclusion2 decks33 decks
-1%synergy
Creatures
Gnat Miser
48%inclusion16 decks33 decks
46%synergy
Persistent Marshstalker
45%inclusion15 decks33 decks
43%synergy
Septic Rats
45%inclusion15 decks33 decks
44%synergy
Typhoid Rats
42%inclusion14 decks33 decks
39%synergy
Lord Skitter's Butcher
39%inclusion13 decks33 decks
36%synergy
Nashi, Moon Sage's Scion
39%inclusion13 decks33 decks
36%synergy
Wave of Rats
36%inclusion12 decks33 decks
35%synergy
Rancid Rats
36%inclusion12 decks33 decks
34%synergy
Valley Rotcaller
33%inclusion11 decks33 decks
31%synergy
Crypt Ghast
33%inclusion11 decks33 decks
-14%synergy
Ayara, First of Locthwain
30%inclusion10 decks33 decks
5%synergy
Species Specialist
30%inclusion10 decks33 decks
27%synergy
Voracious Vermin
30%inclusion10 decks33 decks
27%synergy
Stronghold Rats
30%inclusion10 decks33 decks
27%synergy
Nezumi Informant
27%inclusion9 decks33 decks
21%synergy
Burglar Rat
24%inclusion8 decks33 decks
14%synergy
Ink-Eyes, Servant of Oni
24%inclusion8 decks33 decks
21%synergy
Locust Miser
24%inclusion8 decks33 decks
23%synergy
Swarm of Rats
24%inclusion8 decks33 decks
22%synergy
Undercity Dire Rat
22%inclusion6 decks27 decks
20%synergy
Rat King, Verminister
22%inclusion4 decks18 decks
19%synergy
Chittering Witch
21%inclusion7 decks33 decks
17%synergy
Chittering Skitterling
21%inclusion7 decks33 decks
20%synergy
Changeling Outcast
21%inclusion7 decks33 decks
16%synergy
Nezumi Prowler
21%inclusion7 decks33 decks
20%synergy
Throat Slitter
18%inclusion6 decks33 decks
16%synergy
Yawgmoth, Thran Physician
18%inclusion6 decks33 decks
8%synergy
Pestilence Rats
18%inclusion6 decks33 decks
16%synergy
Okiba-Gang Shinobi
18%inclusion6 decks33 decks
17%synergy
Engine Rat
16%inclusion5 decks31 decks
14%synergy
Gray Merchant of Asphodel
15%inclusion5 decks33 decks
-35%synergy
Adaptive Automaton
15%inclusion5 decks33 decks
14%synergy
Twisted Sewer-Witch
15%inclusion5 decks33 decks
14%synergy
Nezumi Bone-Reader
15%inclusion5 decks33 decks
14%synergy
Refurbished Familiar
12%inclusion4 decks33 decks
10%synergy
Nezumi Graverobber
12%inclusion4 decks33 decks
11%synergy
Rotting Rats
12%inclusion4 decks33 decks
9%synergy
Metallic Mimic
12%inclusion4 decks33 decks
11%synergy
Roaming Throne
12%inclusion4 decks33 decks
9%synergy
Nezumi Shortfang
12%inclusion4 decks33 decks
11%synergy
Zulaport Cutthroat
12%inclusion4 decks33 decks
-11%synergy
Old Flitterfang
12%inclusion4 decks33 decks
11%synergy
Nezumi Cutthroat
12%inclusion4 decks33 decks
11%synergy
Carrion Rats
9.1%inclusion3 decks33 decks
9%synergy
Relentless Rats
9.1%inclusion3 decks33 decks
7%synergy
Ruthless Radrat
9.1%inclusion3 decks33 decks
8%synergy
Zodiac Rat
9.1%inclusion3 decks33 decks
9%synergy
Graf Rats
9.1%inclusion3 decks33 decks
9%synergy
Drainpipe Vermin
9.1%inclusion3 decks33 decks
8%synergy
Ruin Rat
9.1%inclusion3 decks33 decks
8%synergy
Instants
Village Rites
36%inclusion12 decks33 decks
11%synergy
Go for the Throat
33%inclusion11 decks33 decks
11%synergy
Defile
27%inclusion9 decks33 decks
-8%synergy
Culling the Weak
27%inclusion9 decks33 decks
10%synergy
Withering Torment
25%inclusion8 decks32 decks
-6%synergy
Whisper of the Dross
21%inclusion7 decks33 decks
19%synergy
Cabal Ritual
21%inclusion7 decks33 decks
3%synergy
Infernal Grasp
21%inclusion7 decks33 decks
-4%synergy
Deadly Dispute
18%inclusion6 decks33 decks
-8%synergy
Corrupted Conviction
18%inclusion6 decks33 decks
6%synergy
Imp's Mischief
15%inclusion5 decks33 decks
-10%synergy
Grim Affliction
15%inclusion5 decks33 decks
13%synergy
Fell the Profane
12%inclusion4 decks33 decks
-7%synergy
Hero's Downfall
12%inclusion4 decks33 decks
6%synergy
Rat Out
12%inclusion4 decks33 decks
11%synergy
Anoint with Affliction
12%inclusion4 decks33 decks
12%synergy
Sudden Spoiling
12%inclusion4 decks33 decks
4%synergy
Tainted Strike
12%inclusion4 decks33 decks
9%synergy
Tragic Slip
12%inclusion4 decks33 decks
-7%synergy
Snuff Out
9.1%inclusion3 decks33 decks
-4%synergy
Doom Blade
9.1%inclusion3 decks33 decks
2%synergy
Raise the Draugr
9.1%inclusion3 decks33 decks
8%synergy
Dismember
9.1%inclusion3 decks33 decks
-1%synergy
Malakir Rebirth
9.1%inclusion3 decks33 decks
-14%synergy
Force of Despair
6.1%inclusion2 decks33 decks
-2%synergy
Sheoldred's Edict
6.1%inclusion2 decks33 decks
-9%synergy
Virulent Wound
6.1%inclusion2 decks33 decks
6%synergy
Murder
6.1%inclusion2 decks33 decks
-4%synergy
Baleful Mastery
6.1%inclusion2 decks33 decks
-2%synergy
Liliana's Triumph
6.1%inclusion2 decks33 decks
0%synergy
Vona's Hunger
6.1%inclusion2 decks33 decks
2%synergy
Darkness
6.1%inclusion2 decks33 decks
-4%synergy
Sorceries
Drown in Ichor
45%inclusion15 decks33 decks
42%synergy
Kindred Dominance
42%inclusion14 decks33 decks
38%synergy
Diabolic Intent
39%inclusion13 decks33 decks
24%synergy
Phyresis Outbreak
39%inclusion13 decks33 decks
38%synergy
Revenge of the Rats
38%inclusion12 decks32 decks
34%synergy
Feed the Swarm
33%inclusion11 decks33 decks
-17%synergy
Toxic Deluge
33%inclusion11 decks33 decks
-3%synergy
Swarmyard Massacre
30%inclusion10 decks33 decks
28%synergy
Patriarch's Bidding
24%inclusion8 decks33 decks
20%synergy
Echoing Return
21%inclusion7 decks33 decks
18%synergy
Bloodline Bidding
21%inclusion4 decks19 decks
17%synergy
Exsanguinate
18%inclusion6 decks33 decks
-6%synergy
Reanimate
18%inclusion6 decks33 decks
-22%synergy
Damnation
18%inclusion6 decks33 decks
-2%synergy
Grim Tutor
18%inclusion6 decks33 decks
7%synergy
Rise of the Dark Realms
15%inclusion5 decks33 decks
2%synergy
Diabolic Tutor
12%inclusion4 decks33 decks
-2%synergy
Torment of Hailfire
12%inclusion4 decks33 decks
-3%synergy
Plague of Vermin
12%inclusion4 decks33 decks
10%synergy
Sign in Blood
12%inclusion4 decks33 decks
-23%synergy
Crippling Fear
12%inclusion4 decks33 decks
9%synergy
Victimize
9.1%inclusion3 decks33 decks
-18%synergy
Agadeem's Awakening
9.1%inclusion3 decks33 decks
2%synergy
Bubbling Muck
9.1%inclusion3 decks33 decks
-7%synergy
Night's Whisper
9.1%inclusion3 decks33 decks
-16%synergy
Disentomb
9.1%inclusion3 decks33 decks
8%synergy
Shredder's Technique
8.3%inclusion1 decks12 decks
5%synergy
Blasphemous Edict
6.3%inclusion2 decks32 decks
-10%synergy
Vat Emergence
6.1%inclusion2 decks33 decks
5%synergy
Duress
6.1%inclusion2 decks33 decks
-0%synergy
Thoughtseize
6.1%inclusion2 decks33 decks
1%synergy
Phyrexian Tribute
6.1%inclusion2 decks33 decks
6%synergy
Beseech the Mirror
6.1%inclusion2 decks33 decks
-1%synergy
Pact of the Serpent
6.1%inclusion2 decks33 decks
4%synergy
Utility Artifacts
Herald's Horn
48%inclusion16 decks33 decks
43%synergy
Skullclamp
45%inclusion15 decks33 decks
23%synergy
Thrumming Stone
39%inclusion13 decks33 decks
35%synergy
Vanquisher's Banner
27%inclusion9 decks33 decks
23%synergy
Door of Destinies
24%inclusion8 decks33 decks
22%synergy
Lightning Greaves
24%inclusion8 decks33 decks
-10%synergy
The Darkness Crystal
22%inclusion6 decks27 decks
2%synergy
Sword of Truth and Justice
21%inclusion7 decks33 decks
21%synergy
Chronicle of Victory
21%inclusion4 decks19 decks
18%synergy
Sensei's Divining Top
18%inclusion6 decks33 decks
10%synergy
Coat of Arms
18%inclusion6 decks33 decks
16%synergy
Ashnod's Altar
18%inclusion6 decks33 decks
-2%synergy
Phyrexian Altar
18%inclusion6 decks33 decks
4%synergy
Thornbite Staff
18%inclusion6 decks33 decks
15%synergy
Urza's Incubator
15%inclusion5 decks33 decks
13%synergy
Swiftfoot Boots
15%inclusion5 decks33 decks
-16%synergy
Banner of Kinship
13%inclusion4 decks32 decks
10%synergy
Whip of Erebos
12%inclusion4 decks33 decks
1%synergy
Expedition Map
12%inclusion4 decks33 decks
1%synergy
Eldrazi Monument
12%inclusion4 decks33 decks
10%synergy
Contagion Engine
9.1%inclusion3 decks33 decks
7%synergy
Sword of Hearth and Home
9.1%inclusion3 decks33 decks
8%synergy
Commander's Plate
9.1%inclusion3 decks33 decks
3%synergy
Contagion Clasp
6.1%inclusion2 decks33 decks
4%synergy
Mirror Box
6.1%inclusion2 decks33 decks
5%synergy
Akroma's Memorial
6.1%inclusion2 decks33 decks
5%synergy
Whispersilk Cloak
6.1%inclusion2 decks33 decks
0%synergy
Scroll Rack
6.1%inclusion2 decks33 decks
6%synergy
Altar of the Brood
6.1%inclusion2 decks33 decks
4%synergy
Helm of the Host
6.1%inclusion2 decks33 decks
5%synergy
Recon Craft Theta
6.1%inclusion2 decks33 decks
6%synergy
Grafted Exoskeleton
6.1%inclusion2 decks33 decks
5%synergy
Gathering Stone
5.3%inclusion1 decks19 decks
4%synergy
Enchantments
Cover of Darkness
48%inclusion16 decks33 decks
45%synergy
Grave Pact
45%inclusion15 decks33 decks
26%synergy
Black Market Connections
30%inclusion10 decks33 decks
6%synergy
Black Market
27%inclusion9 decks33 decks
7%synergy
Haunted One
24%inclusion8 decks33 decks
22%synergy
Oversold Cemetery
24%inclusion8 decks33 decks
19%synergy
Necrogen Communion
21%inclusion7 decks33 decks
19%synergy
The Meathook Massacre
15%inclusion5 decks33 decks
-2%synergy
Dictate of Erebos
12%inclusion4 decks33 decks
1%synergy
Vampiric Rites
9.1%inclusion3 decks33 decks
3%synergy
Exquisite Blood
9.1%inclusion3 decks33 decks
-4%synergy
Sanguine Bond
9.1%inclusion3 decks33 decks
-3%synergy
Bastion of Remembrance
9.1%inclusion3 decks33 decks
-8%synergy
Lord Skitter's Blessing
9.1%inclusion3 decks33 decks
8%synergy
Intimidation
9.1%inclusion3 decks33 decks
9%synergy
Dark Prophecy
9.1%inclusion3 decks33 decks
5%synergy
Sothera, the Supervoid
7.7%inclusion2 decks26 decks
5%synergy
Phyrexian Reclamation
6.1%inclusion2 decks33 decks
-4%synergy
Tribute to Horobi
6.1%inclusion2 decks33 decks
5%synergy
Phyresis
6.1%inclusion2 decks33 decks
4%synergy
Conspiracy
6.1%inclusion2 decks33 decks
6%synergy
Painful Quandary
6.1%inclusion2 decks33 decks
-4%synergy
Bad Moon
6.1%inclusion2 decks33 decks
3%synergy
No Mercy
6.1%inclusion2 decks33 decks
-1%synergy
Oubliette
6.1%inclusion2 decks33 decks
3%synergy
Planeswalkers
Vraska, Betrayal's Sting
39%inclusion13 decks33 decks
37%synergy
Liliana of the Dark Realms
21%inclusion7 decks33 decks
7%synergy
Utility Lands
Cabal Coffers
82%inclusion27 decks33 decks
27%synergy
Urborg, Tomb of Yawgmoth
76%inclusion25 decks33 decks
38%synergy
Nykthos, Shrine to Nyx
55%inclusion18 decks33 decks
25%synergy
Three Tree City
55%inclusion18 decks33 decks
50%synergy
Phyrexian Tower
52%inclusion17 decks33 decks
26%synergy
Bojuka Bog
45%inclusion15 decks33 decks
-2%synergy
Cabal Stronghold
45%inclusion15 decks33 decks
11%synergy
Karn's Bastion
45%inclusion15 decks33 decks
42%synergy
Castle Locthwain
42%inclusion14 decks33 decks
26%synergy
Shizo, Death's Storehouse
36%inclusion12 decks33 decks
26%synergy
Mudflat Village
36%inclusion12 decks33 decks
34%synergy
Witch's Cottage
33%inclusion11 decks33 decks
9%synergy
Rogue's Passage
33%inclusion11 decks33 decks
14%synergy
War Room
30%inclusion10 decks33 decks
14%synergy
Reliquary Tower
30%inclusion10 decks33 decks
0%synergy
Mortuary Mire
24%inclusion8 decks33 decks
11%synergy
Secret Tunnel
22%inclusion5 decks23 decks
21%synergy
Crypt of Agadeem
21%inclusion7 decks33 decks
10%synergy
Takenuma, Abandoned Mire
21%inclusion7 decks33 decks
6%synergy
Volrath's Stronghold
21%inclusion7 decks33 decks
18%synergy
Minas Morgul, Dark Fortress
21%inclusion7 decks33 decks
18%synergy
The Black Gate
12%inclusion4 decks33 decks
9%synergy
Urza's Saga
12%inclusion4 decks33 decks
4%synergy
Lake of the Dead
12%inclusion4 decks33 decks
7%synergy
Access Tunnel
12%inclusion4 decks33 decks
9%synergy
Command Beacon
9.1%inclusion3 decks33 decks
1%synergy
Thespian's Stage
9.1%inclusion3 decks33 decks
4%synergy
Spymaster's Vault
9.1%inclusion3 decks33 decks
-1%synergy
Temple of the False God
9.1%inclusion3 decks33 decks
1%synergy
Vesuva
6.1%inclusion2 decks33 decks
3%synergy
Barren Moor
6.1%inclusion2 decks33 decks
-3%synergy
Mutavault
6.1%inclusion2 decks33 decks
5%synergy
Urborg
6.1%inclusion2 decks33 decks
5%synergy
Inkmoth Nexus
6.1%inclusion2 decks33 decks
5%synergy
Strip Mine
6.1%inclusion2 decks33 decks
3%synergy
Mana Artifacts
Sol Ring
97%inclusion32 decks33 decks
11%synergy
Arcane Signet
45%inclusion15 decks33 decks
-16%synergy
The Soul Stone
36%inclusion9 decks25 decks
21%synergy
Glistening Sphere
30%inclusion10 decks33 decks
29%synergy
Staff of Compleation
27%inclusion9 decks33 decks
26%synergy
Patchwork Banner
24%inclusion8 decks33 decks
20%synergy
Throne of Eldraine
18%inclusion6 decks33 decks
9%synergy
Gauntlet of Power
12%inclusion4 decks33 decks
9%synergy
Heraldic Banner
12%inclusion4 decks33 decks
7%synergy
Mind Stone
12%inclusion4 decks33 decks
-16%synergy
Caged Sun
9.1%inclusion3 decks33 decks
-2%synergy
Fellwar Stone
9.1%inclusion3 decks33 decks
-5%synergy
Phyrexian Atlas
9.1%inclusion3 decks33 decks
9%synergy
Mox Opal
9.1%inclusion3 decks33 decks
6%synergy
Nyx Lotus
9.1%inclusion3 decks33 decks
3%synergy
The Eternity Elevator
8.0%inclusion2 decks25 decks
7%synergy
Lotus Petal
6.1%inclusion2 decks33 decks
-1%synergy
Mox Amber
6.1%inclusion2 decks33 decks
2%synergy
Sceptre of Eternal Glory
6.1%inclusion2 decks33 decks
-2%synergy
Worn Powerstone
6.1%inclusion2 decks33 decks
2%synergy
Lands
Swamp
94%inclusion31 decks33 decks
-1%synergy
Cavern of Souls
67%inclusion22 decks33 decks
60%synergy
Path of Ancestry
42%inclusion14 decks33 decks
37%synergy
Myriad Landscape
15%inclusion5 decks33 decks
-10%synergy
Snow-Covered Swamp
15%inclusion5 decks33 decks
9%synergy
Fell the Profane
12%inclusion4 decks33 decks
-7%synergy
Command Tower
12%inclusion4 decks33 decks
6%synergy
Urza's Cave
12%inclusion4 decks33 decks
4%synergy
Polluted Delta
12%inclusion4 decks33 decks
8%synergy
Abundant Countryside
11%inclusion2 decks19 decks
10%synergy
Agadeem's Awakening
9.1%inclusion3 decks33 decks
2%synergy
Marsh Flats
9.1%inclusion3 decks33 decks
5%synergy
Bloodstained Mire
9.1%inclusion3 decks33 decks
5%synergy
Malakir Rebirth
9.1%inclusion3 decks33 decks
-14%synergy
Gemstone Caverns
9.1%inclusion3 decks33 decks
5%synergy
Fabled Passage
6.1%inclusion2 decks33 decks
4%synergy
Prismatic Vista
6.1%inclusion2 decks33 decks
4%synergy
Evolving Wilds
6.1%inclusion2 decks33 decks
2%synergy
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