Karumonix, the Rat King (Commander) - cEDH

Karumonix, the Rat King
Rank #384
7decks
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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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Enchantments
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Utility Lands
Mana Artifacts
Lands
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Piper of the Swarm
86%inclusion6 decks7 decks
79%synergy
Rat Colony
71%inclusion5 decks7 decks
66%synergy
Marrow-Gnawer
57%inclusion4 decks7 decks
54%synergy
Thrumming Stone
57%inclusion4 decks7 decks
53%synergy
Swarmyard
57%inclusion4 decks7 decks
51%synergy
Diabolic Intent
57%inclusion4 decks7 decks
42%synergy
Skullclamp
57%inclusion4 decks7 decks
35%synergy
Bontu's Monument
57%inclusion4 decks7 decks
29%synergy
Urborg, Tomb of Yawgmoth
57%inclusion4 decks7 decks
20%synergy
Top Cards
Dark Ritual
71%inclusion5 decks7 decks
5%synergy
Jet Medallion
57%inclusion4 decks7 decks
-5%synergy
Game Changers
Demonic Tutor
71%inclusion5 decks7 decks
44%synergy
Vampiric Tutor
57%inclusion4 decks7 decks
36%synergy
Bolas's Citadel
29%inclusion2 decks7 decks
0%synergy
Imperial Seal
29%inclusion2 decks7 decks
22%synergy
Opposition Agent
29%inclusion2 decks7 decks
19%synergy
Mana Vault
29%inclusion2 decks7 decks
22%synergy
Necropotence
29%inclusion2 decks7 decks
14%synergy
Chrome Mox
14%inclusion1 decks7 decks
8%synergy
Ad Nauseam
14%inclusion1 decks7 decks
12%synergy
Creatures
Crypt Rats
43%inclusion3 decks7 decks
38%synergy
Pack Rat
43%inclusion3 decks7 decks
37%synergy
Ashcoat of the Shadow Swarm
43%inclusion3 decks7 decks
39%synergy
Relentless Rats
29%inclusion2 decks7 decks
27%synergy
Ogre Slumlord
29%inclusion2 decks7 decks
19%synergy
Ayara, First of Locthwain
29%inclusion2 decks7 decks
3%synergy
Voracious Vermin
29%inclusion2 decks7 decks
26%synergy
Species Specialist
29%inclusion2 decks7 decks
25%synergy
Rancid Rats
29%inclusion2 decks7 decks
26%synergy
Blightbelly Rat
29%inclusion2 decks7 decks
25%synergy
Ichor Rats
29%inclusion2 decks7 decks
26%synergy
Persistent Marshstalker
17%inclusion1 decks6 decks
14%synergy
Daggerfang Duo
17%inclusion1 decks6 decks
16%synergy
Bog Rats
14%inclusion1 decks7 decks
14%synergy
Plague Stinger
14%inclusion1 decks7 decks
13%synergy
Murderous Rider
14%inclusion1 decks7 decks
8%synergy
Thriving Rats
14%inclusion1 decks7 decks
14%synergy
Rabid Rats
14%inclusion1 decks7 decks
14%synergy
Rotting Rats
14%inclusion1 decks7 decks
11%synergy
Nezumi Graverobber
14%inclusion1 decks7 decks
13%synergy
Blood Artist
14%inclusion1 decks7 decks
-17%synergy
Morbid Opportunist
14%inclusion1 decks7 decks
-9%synergy
Ruthless Radrat
14%inclusion1 decks7 decks
13%synergy
Tangled Colony
14%inclusion1 decks7 decks
11%synergy
Lord Skitter's Butcher
14%inclusion1 decks7 decks
11%synergy
Fleshbag Marauder
14%inclusion1 decks7 decks
-2%synergy
Plaguecrafter
14%inclusion1 decks7 decks
-6%synergy
Burglar Rat
14%inclusion1 decks7 decks
3%synergy
Diregraf Ghoul
14%inclusion1 decks7 decks
14%synergy
Roaming Throne
14%inclusion1 decks7 decks
11%synergy
Grim Haruspex
14%inclusion1 decks7 decks
5%synergy
Gray Merchant of Asphodel
14%inclusion1 decks7 decks
-37%synergy
Zulaport Cutthroat
14%inclusion1 decks7 decks
-9%synergy
Swarm of Rats
14%inclusion1 decks7 decks
12%synergy
Chittering Skitterling
14%inclusion1 decks7 decks
13%synergy
Yawgmoth, Thran Physician
14%inclusion1 decks7 decks
4%synergy
Crypt Ghast
14%inclusion1 decks7 decks
-33%synergy
Nezumi Prowler
14%inclusion1 decks7 decks
13%synergy
Sewer Rats
14%inclusion1 decks7 decks
14%synergy
Septic Rats
14%inclusion1 decks7 decks
12%synergy
Gnat Miser
14%inclusion1 decks7 decks
11%synergy
Nashi, Moon Sage's Scion
14%inclusion1 decks7 decks
10%synergy
Typhoid Rats
14%inclusion1 decks7 decks
11%synergy
Stronghold Rats
14%inclusion1 decks7 decks
10%synergy
Lord Skitter, Sewer King
14%inclusion1 decks7 decks
6%synergy
Vampire Nighthawk
14%inclusion1 decks7 decks
9%synergy
Gix, Yawgmoth Praetor
14%inclusion1 decks7 decks
9%synergy
Massacre Wurm
14%inclusion1 decks7 decks
-3%synergy
Skirge Familiar
14%inclusion1 decks7 decks
9%synergy
Dauthi Voidwalker
14%inclusion1 decks7 decks
-1%synergy
Instants
Infernal Grasp
43%inclusion3 decks7 decks
18%synergy
Fatal Push
29%inclusion2 decks7 decks
25%synergy
Imp's Mischief
29%inclusion2 decks7 decks
4%synergy
Deadly Dispute
29%inclusion2 decks7 decks
3%synergy
Defile
29%inclusion2 decks7 decks
-8%synergy
Vraska's Fall
29%inclusion2 decks7 decks
25%synergy
Cabal Ritual
29%inclusion2 decks7 decks
10%synergy
Culling the Weak
29%inclusion2 decks7 decks
13%synergy
Tainted Strike
29%inclusion2 decks7 decks
26%synergy
Fell the Profane
14%inclusion1 decks7 decks
-5%synergy
Deadly Rollick
14%inclusion1 decks7 decks
-10%synergy
Cut Down
14%inclusion1 decks7 decks
10%synergy
Go for the Throat
14%inclusion1 decks7 decks
-9%synergy
Snuff Out
14%inclusion1 decks7 decks
1%synergy
Grim Affliction
14%inclusion1 decks7 decks
12%synergy
Whisper of the Dross
14%inclusion1 decks7 decks
11%synergy
Flare of Malice
14%inclusion1 decks7 decks
1%synergy
Entomb
14%inclusion1 decks7 decks
2%synergy
Murder
14%inclusion1 decks7 decks
4%synergy
Withering Boon
14%inclusion1 decks7 decks
10%synergy
Victim of Night
14%inclusion1 decks7 decks
12%synergy
Sudden Spoiling
14%inclusion1 decks7 decks
5%synergy
Erebos's Intervention
14%inclusion1 decks7 decks
12%synergy
Bitter Triumph
14%inclusion1 decks7 decks
5%synergy
Plumb the Forbidden
14%inclusion1 decks7 decks
10%synergy
Blood Pact
14%inclusion1 decks7 decks
10%synergy
Tragic Slip
14%inclusion1 decks7 decks
-6%synergy
Sorceries
Diabolic Tutor
43%inclusion3 decks7 decks
28%synergy
Grim Tutor
43%inclusion3 decks7 decks
31%synergy
Patriarch's Bidding
29%inclusion2 decks7 decks
24%synergy
Profane Tutor
29%inclusion2 decks7 decks
24%synergy
Yawgmoth's Will
29%inclusion2 decks7 decks
25%synergy
Feed the Swarm
29%inclusion2 decks7 decks
-22%synergy
Infectious Inquiry
29%inclusion2 decks7 decks
26%synergy
Night's Whisper
29%inclusion2 decks7 decks
4%synergy
Insatiable Avarice
29%inclusion2 decks7 decks
17%synergy
Sign in Blood
29%inclusion2 decks7 decks
-7%synergy
Cruel Tutor
29%inclusion2 decks7 decks
27%synergy
Toxic Deluge
29%inclusion2 decks7 decks
-8%synergy
Psychic Whorl
17%inclusion1 decks6 decks
16%synergy
Fell
17%inclusion1 decks6 decks
13%synergy
Vat Emergence
14%inclusion1 decks7 decks
13%synergy
Nightmare Unmaking
14%inclusion1 decks7 decks
14%synergy
Spread the Sickness
14%inclusion1 decks7 decks
14%synergy
Forever Young
14%inclusion1 decks7 decks
13%synergy
Feed the Infection
14%inclusion1 decks7 decks
14%synergy
Unearth
14%inclusion1 decks7 decks
6%synergy
Demonic Collusion
14%inclusion1 decks7 decks
14%synergy
Agadeem's Awakening
14%inclusion1 decks7 decks
7%synergy
Torment of Hailfire
14%inclusion1 decks7 decks
-1%synergy
Duress
14%inclusion1 decks7 decks
8%synergy
Praetor's Grasp
14%inclusion1 decks7 decks
10%synergy
Scheming Symmetry
14%inclusion1 decks7 decks
10%synergy
Ancient Craving
14%inclusion1 decks7 decks
12%synergy
Caress of Phyrexia
14%inclusion1 decks7 decks
14%synergy
Hex
14%inclusion1 decks7 decks
14%synergy
Reanimate
14%inclusion1 decks7 decks
-25%synergy
Read the Bones
14%inclusion1 decks7 decks
-3%synergy
Kindred Dominance
14%inclusion1 decks7 decks
10%synergy
Damnation
14%inclusion1 decks7 decks
-6%synergy
Brainspoil
14%inclusion1 decks7 decks
14%synergy
Drown in Ichor
14%inclusion1 decks7 decks
10%synergy
Pact of the Serpent
14%inclusion1 decks7 decks
13%synergy
Secret Salvage
14%inclusion1 decks7 decks
13%synergy
Dirge of Dread
14%inclusion1 decks7 decks
14%synergy
Gruesome Fate
14%inclusion1 decks7 decks
12%synergy
Plague of Vermin
14%inclusion1 decks7 decks
12%synergy
Utility Artifacts
Sensei's Divining Top
29%inclusion2 decks7 decks
20%synergy
Contagion Clasp
29%inclusion2 decks7 decks
26%synergy
Contagion Engine
29%inclusion2 decks7 decks
27%synergy
Phyrexian Altar
29%inclusion2 decks7 decks
15%synergy
Herald's Horn
29%inclusion2 decks7 decks
23%synergy
Eldrazi Monument
29%inclusion2 decks7 decks
27%synergy
Swiftfoot Boots
29%inclusion2 decks7 decks
-3%synergy
Lightning Greaves
29%inclusion2 decks7 decks
-5%synergy
Icon of Ancestry
14%inclusion1 decks7 decks
13%synergy
Skeleton Key
14%inclusion1 decks7 decks
14%synergy
Hall of Triumph
14%inclusion1 decks7 decks
14%synergy
Spellbook
14%inclusion1 decks7 decks
13%synergy
Expedition Map
14%inclusion1 decks7 decks
2%synergy
Ashnod's Altar
14%inclusion1 decks7 decks
-6%synergy
Locket of Yesterdays
14%inclusion1 decks7 decks
14%synergy
Altar of Dementia
14%inclusion1 decks7 decks
9%synergy
Thornbite Staff
14%inclusion1 decks7 decks
11%synergy
Prosthetic Injector
14%inclusion1 decks7 decks
14%synergy
Library of Leng
14%inclusion1 decks7 decks
13%synergy
Pithing Needle
14%inclusion1 decks7 decks
14%synergy
Grafted Exoskeleton
14%inclusion1 decks7 decks
13%synergy
Enchantments
The Meathook Massacre
14%inclusion1 decks7 decks
-3%synergy
Price of Knowledge
14%inclusion1 decks7 decks
14%synergy
Underworld Connections
14%inclusion1 decks7 decks
12%synergy
Black Market
14%inclusion1 decks7 decks
-7%synergy
Okiba Reckoner Raid
14%inclusion1 decks7 decks
14%synergy
Dictate of Erebos
14%inclusion1 decks7 decks
3%synergy
Contamination
14%inclusion1 decks7 decks
11%synergy
Phyresis
14%inclusion1 decks7 decks
12%synergy
Snake Cult Initiation
14%inclusion1 decks7 decks
14%synergy
Gate to Phyrexia
14%inclusion1 decks7 decks
14%synergy
Phyrexian Reclamation
14%inclusion1 decks7 decks
4%synergy
Vampiric Rites
14%inclusion1 decks7 decks
8%synergy
Black Market Connections
14%inclusion1 decks7 decks
-10%synergy
Oversold Cemetery
14%inclusion1 decks7 decks
9%synergy
Phyrexian Arena
14%inclusion1 decks7 decks
-26%synergy
Necrogen Communion
14%inclusion1 decks7 decks
12%synergy
Tribute to Horobi
14%inclusion1 decks7 decks
13%synergy
Intimidation
14%inclusion1 decks7 decks
14%synergy
Oubliette
14%inclusion1 decks7 decks
11%synergy
Bastion of Remembrance
14%inclusion1 decks7 decks
-3%synergy
Mortal Combat
14%inclusion1 decks7 decks
14%synergy
Infernal Darkness
14%inclusion1 decks7 decks
14%synergy
Bad Moon
14%inclusion1 decks7 decks
11%synergy
Planeswalkers
Vraska, Betrayal's Sting
14%inclusion1 decks7 decks
12%synergy
Utility Lands
Bojuka Bog
43%inclusion3 decks7 decks
-4%synergy
Cabal Coffers
43%inclusion3 decks7 decks
-12%synergy
Cabal Stronghold
29%inclusion2 decks7 decks
-6%synergy
Vesuva
29%inclusion2 decks7 decks
26%synergy
Karn's Bastion
29%inclusion2 decks7 decks
25%synergy
Reliquary Tower
29%inclusion2 decks7 decks
-2%synergy
War Room
29%inclusion2 decks7 decks
12%synergy
Takenuma, Abandoned Mire
29%inclusion2 decks7 decks
13%synergy
Castle Locthwain
29%inclusion2 decks7 decks
12%synergy
Mudflat Village
17%inclusion1 decks6 decks
14%synergy
Three Tree City
17%inclusion1 decks6 decks
12%synergy
Vault of Whispers
14%inclusion1 decks7 decks
9%synergy
Phyrexian Tower
14%inclusion1 decks7 decks
-11%synergy
Ghost Quarter
14%inclusion1 decks7 decks
12%synergy
Buried Ruin
14%inclusion1 decks7 decks
9%synergy
The Black Gate
14%inclusion1 decks7 decks
11%synergy
Witch's Cottage
14%inclusion1 decks7 decks
-10%synergy
Volrath's Stronghold
14%inclusion1 decks7 decks
11%synergy
Geier Reach Sanitarium
14%inclusion1 decks7 decks
3%synergy
Command Beacon
14%inclusion1 decks7 decks
6%synergy
Deserted Temple
14%inclusion1 decks7 decks
10%synergy
Crypt of Agadeem
14%inclusion1 decks7 decks
3%synergy
Temple of the False God
14%inclusion1 decks7 decks
6%synergy
Rogue's Passage
14%inclusion1 decks7 decks
-5%synergy
Field of Ruin
14%inclusion1 decks7 decks
12%synergy
Nykthos, Shrine to Nyx
14%inclusion1 decks7 decks
-15%synergy
Access Tunnel
14%inclusion1 decks7 decks
11%synergy
Mana Artifacts
Arcane Signet
86%inclusion6 decks7 decks
24%synergy
Sol Ring
86%inclusion6 decks7 decks
0%synergy
Patchwork Banner
50%inclusion3 decks6 decks
46%synergy
Heraldic Banner
43%inclusion3 decks7 decks
37%synergy
Charcoal Diamond
29%inclusion2 decks7 decks
6%synergy
Commander's Sphere
29%inclusion2 decks7 decks
20%synergy
Thought Vessel
29%inclusion2 decks7 decks
3%synergy
Mind Stone
29%inclusion2 decks7 decks
0%synergy
Gauntlet of Power
14%inclusion1 decks7 decks
11%synergy
Staff of Compleation
14%inclusion1 decks7 decks
13%synergy
Lotus Petal
14%inclusion1 decks7 decks
7%synergy
Decanter of Endless Water
14%inclusion1 decks7 decks
11%synergy
Throne of Eldraine
14%inclusion1 decks7 decks
4%synergy
Mox Amber
14%inclusion1 decks7 decks
10%synergy
Fellwar Stone
14%inclusion1 decks7 decks
0%synergy
Lands
Swamp
86%inclusion6 decks7 decks
-9%synergy
Cavern of Souls
43%inclusion3 decks7 decks
36%synergy
Command Tower
29%inclusion2 decks7 decks
23%synergy
Myriad Landscape
29%inclusion2 decks7 decks
3%synergy
Path of Ancestry
29%inclusion2 decks7 decks
23%synergy
Escape Tunnel
14%inclusion1 decks7 decks
13%synergy
Prismatic Vista
14%inclusion1 decks7 decks
12%synergy
Fell the Profane
14%inclusion1 decks7 decks
-5%synergy
Fabled Passage
14%inclusion1 decks7 decks
12%synergy
Agadeem's Awakening
14%inclusion1 decks7 decks
7%synergy
Verdant Catacombs
14%inclusion1 decks7 decks
11%synergy
Evolving Wilds
14%inclusion1 decks7 decks
11%synergy
Bloodstained Mire
14%inclusion1 decks7 decks
11%synergy
Snow-Covered Swamp
14%inclusion1 decks7 decks
8%synergy
Marsh Flats
14%inclusion1 decks7 decks
11%synergy
Polluted Delta
14%inclusion1 decks7 decks
11%synergy
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