Karumonix, the Rat King (Commander) - cEDH

Karumonix, the Rat King
Rank #393
7decks
As CommanderAs CardAverage DeckDecks
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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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Marrow-Gnawer
86%inclusion6 decks7 decks
82%synergy
Rat Colony
86%inclusion6 decks7 decks
80%synergy
Piper of the Swarm
86%inclusion6 decks7 decks
79%synergy
Ashcoat of the Shadow Swarm
71%inclusion5 decks7 decks
68%synergy
Thrumming Stone
71%inclusion5 decks7 decks
67%synergy
Swarmyard
71%inclusion5 decks7 decks
66%synergy
Pack Rat
57%inclusion4 decks7 decks
51%synergy
Skullclamp
71%inclusion5 decks7 decks
49%synergy
Urborg, Tomb of Yawgmoth
86%inclusion6 decks7 decks
48%synergy
Diabolic Intent
57%inclusion4 decks7 decks
42%synergy
Top Cards
Dark Ritual
86%inclusion6 decks7 decks
19%synergy
Jet Medallion
86%inclusion6 decks7 decks
23%synergy
Ayara, First of Locthwain
57%inclusion4 decks7 decks
32%synergy
Game Changers
Demonic Tutor
100%inclusion7 decks7 decks
73%synergy
Bolas's Citadel
57%inclusion4 decks7 decks
29%synergy
Vampiric Tutor
57%inclusion4 decks7 decks
36%synergy
Imperial Seal
43%inclusion3 decks7 decks
36%synergy
Opposition Agent
43%inclusion3 decks7 decks
33%synergy
Mana Vault
43%inclusion3 decks7 decks
36%synergy
Necropotence
29%inclusion2 decks7 decks
14%synergy
Chrome Mox
29%inclusion2 decks7 decks
23%synergy
The One Ring
14%inclusion1 decks7 decks
5%synergy
Ad Nauseam
14%inclusion1 decks7 decks
11%synergy
Creatures
Ogre Slumlord
43%inclusion3 decks7 decks
33%synergy
Crypt Rats
43%inclusion3 decks7 decks
38%synergy
Lord Skitter, Sewer King
43%inclusion3 decks7 decks
35%synergy
Ichor Rats
43%inclusion3 decks7 decks
40%synergy
Rat King, Pale Piper
33%inclusion1 decks3 decks
29%synergy
Blood Artist
29%inclusion2 decks7 decks
-3%synergy
Morbid Opportunist
29%inclusion2 decks7 decks
5%synergy
Lord Skitter's Butcher
29%inclusion2 decks7 decks
25%synergy
Species Specialist
29%inclusion2 decks7 decks
25%synergy
Grim Haruspex
29%inclusion2 decks7 decks
20%synergy
Zulaport Cutthroat
29%inclusion2 decks7 decks
5%synergy
Septic Rats
29%inclusion2 decks7 decks
27%synergy
Nashi, Moon Sage's Scion
29%inclusion2 decks7 decks
25%synergy
Dauthi Voidwalker
29%inclusion2 decks7 decks
13%synergy
Crypt Ghast
29%inclusion2 decks7 decks
-19%synergy
Blightbelly Rat
29%inclusion2 decks7 decks
25%synergy
Plague Stinger
14%inclusion1 decks7 decks
13%synergy
Relentless Rats
14%inclusion1 decks7 decks
13%synergy
Murderous Rider
14%inclusion1 decks7 decks
8%synergy
Rotting Rats
14%inclusion1 decks7 decks
11%synergy
Burglar Rat
14%inclusion1 decks7 decks
4%synergy
Gray Merchant of Asphodel
14%inclusion1 decks7 decks
-36%synergy
Plaguecrafter
14%inclusion1 decks7 decks
-6%synergy
Ink-Eyes, Servant of Oni
14%inclusion1 decks7 decks
11%synergy
Diregraf Ghoul
14%inclusion1 decks7 decks
14%synergy
Tangled Colony
14%inclusion1 decks7 decks
11%synergy
Persistent Marshstalker
14%inclusion1 decks7 decks
11%synergy
Swarm of Rats
14%inclusion1 decks7 decks
12%synergy
Chittering Witch
14%inclusion1 decks7 decks
10%synergy
Voracious Vermin
14%inclusion1 decks7 decks
11%synergy
Fleshbag Marauder
14%inclusion1 decks7 decks
-2%synergy
Massacre Wurm
14%inclusion1 decks7 decks
-3%synergy
Yawgmoth, Thran Physician
14%inclusion1 decks7 decks
4%synergy
Ratcatcher
14%inclusion1 decks7 decks
11%synergy
Nezumi Prowler
14%inclusion1 decks7 decks
13%synergy
Skirge Familiar
14%inclusion1 decks7 decks
9%synergy
Wave of Rats
14%inclusion1 decks7 decks
13%synergy
Rancid Rats
14%inclusion1 decks7 decks
12%synergy
Stronghold Rats
14%inclusion1 decks7 decks
11%synergy
Vampire Nighthawk
14%inclusion1 decks7 decks
9%synergy
Chittering Skitterling
14%inclusion1 decks7 decks
13%synergy
Valley Rotcaller
14%inclusion1 decks7 decks
12%synergy
Gix, Yawgmoth Praetor
14%inclusion1 decks7 decks
9%synergy
Changeling Outcast
14%inclusion1 decks7 decks
9%synergy
Pestilence Rats
14%inclusion1 decks7 decks
12%synergy
Gnat Miser
14%inclusion1 decks7 decks
11%synergy
Typhoid Rats
14%inclusion1 decks7 decks
11%synergy
Midnight Reaper
14%inclusion1 decks7 decks
6%synergy
Orcish Bowmasters
14%inclusion1 decks7 decks
1%synergy
Instants
Cabal Ritual
43%inclusion3 decks7 decks
24%synergy
Deadly Rollick
29%inclusion2 decks7 decks
4%synergy
Fatal Push
29%inclusion2 decks7 decks
25%synergy
Snuff Out
29%inclusion2 decks7 decks
15%synergy
Go for the Throat
29%inclusion2 decks7 decks
6%synergy
Imp's Mischief
29%inclusion2 decks7 decks
4%synergy
Culling the Weak
29%inclusion2 decks7 decks
12%synergy
Vraska's Fall
29%inclusion2 decks7 decks
25%synergy
Tainted Strike
29%inclusion2 decks7 decks
26%synergy
Plumb the Forbidden
29%inclusion2 decks7 decks
24%synergy
Fell the Profane
14%inclusion1 decks7 decks
-5%synergy
Entomb
14%inclusion1 decks7 decks
2%synergy
Whisper of the Dross
14%inclusion1 decks7 decks
12%synergy
Cut Down
14%inclusion1 decks7 decks
11%synergy
Flare of Malice
14%inclusion1 decks7 decks
1%synergy
Deadly Dispute
14%inclusion1 decks7 decks
-12%synergy
Village Rites
14%inclusion1 decks7 decks
-11%synergy
Withering Boon
14%inclusion1 decks7 decks
10%synergy
Bitter Triumph
14%inclusion1 decks7 decks
4%synergy
Infernal Grasp
14%inclusion1 decks7 decks
-11%synergy
Victim of Night
14%inclusion1 decks7 decks
13%synergy
Erebos's Intervention
14%inclusion1 decks7 decks
12%synergy
Dismember
14%inclusion1 decks7 decks
4%synergy
Blood Pact
14%inclusion1 decks7 decks
10%synergy
Sudden Spoiling
14%inclusion1 decks7 decks
6%synergy
Sorceries
Feed the Swarm
43%inclusion3 decks7 decks
-7%synergy
Sign in Blood
43%inclusion3 decks7 decks
8%synergy
Grim Tutor
43%inclusion3 decks7 decks
31%synergy
Kindred Dominance
43%inclusion3 decks7 decks
38%synergy
Diabolic Tutor
29%inclusion2 decks7 decks
14%synergy
Profane Tutor
29%inclusion2 decks7 decks
24%synergy
Patriarch's Bidding
29%inclusion2 decks7 decks
24%synergy
Yawgmoth's Will
29%inclusion2 decks7 decks
25%synergy
Night's Whisper
29%inclusion2 decks7 decks
4%synergy
Insatiable Avarice
29%inclusion2 decks7 decks
17%synergy
Toxic Deluge
29%inclusion2 decks7 decks
-8%synergy
Infectious Inquiry
29%inclusion2 decks7 decks
26%synergy
Cruel Tutor
29%inclusion2 decks7 decks
27%synergy
Nightmare Unmaking
14%inclusion1 decks7 decks
14%synergy
Torment of Hailfire
14%inclusion1 decks7 decks
-1%synergy
Phyresis Outbreak
14%inclusion1 decks7 decks
13%synergy
Revenge of the Rats
14%inclusion1 decks7 decks
11%synergy
Agadeem's Awakening
14%inclusion1 decks7 decks
7%synergy
Demonic Collusion
14%inclusion1 decks7 decks
14%synergy
Read the Bones
14%inclusion1 decks7 decks
-2%synergy
Scheming Symmetry
14%inclusion1 decks7 decks
10%synergy
Reanimate
14%inclusion1 decks7 decks
-26%synergy
Praetor's Grasp
14%inclusion1 decks7 decks
10%synergy
Brainspoil
14%inclusion1 decks7 decks
14%synergy
Damnation
14%inclusion1 decks7 decks
-6%synergy
Drown in Ichor
14%inclusion1 decks7 decks
11%synergy
Secret Salvage
14%inclusion1 decks7 decks
13%synergy
Plague of Vermin
14%inclusion1 decks7 decks
12%synergy
Crippling Fear
14%inclusion1 decks7 decks
11%synergy
Pact of the Serpent
14%inclusion1 decks7 decks
13%synergy
Utility Artifacts
Bontu's Monument
43%inclusion3 decks7 decks
14%synergy
Sensei's Divining Top
29%inclusion2 decks7 decks
21%synergy
Contagion Clasp
29%inclusion2 decks7 decks
26%synergy
Contagion Engine
29%inclusion2 decks7 decks
27%synergy
Ashnod's Altar
29%inclusion2 decks7 decks
9%synergy
Phyrexian Altar
29%inclusion2 decks7 decks
15%synergy
Expedition Map
29%inclusion2 decks7 decks
17%synergy
Lightning Greaves
29%inclusion2 decks7 decks
-5%synergy
Eldrazi Monument
29%inclusion2 decks7 decks
27%synergy
Locket of Yesterdays
29%inclusion2 decks7 decks
28%synergy
Herald's Horn
29%inclusion2 decks7 decks
23%synergy
Altar of Dementia
29%inclusion2 decks7 decks
23%synergy
Whispersilk Cloak
14%inclusion1 decks7 decks
8%synergy
Pithing Needle
14%inclusion1 decks7 decks
14%synergy
Thornbite Staff
14%inclusion1 decks7 decks
11%synergy
Grafted Exoskeleton
14%inclusion1 decks7 decks
13%synergy
Vanquisher's Banner
14%inclusion1 decks7 decks
10%synergy
Swiftfoot Boots
14%inclusion1 decks7 decks
-17%synergy
Enchantments
Black Market
29%inclusion2 decks7 decks
8%synergy
Dictate of Erebos
29%inclusion2 decks7 decks
18%synergy
Oubliette
29%inclusion2 decks7 decks
26%synergy
Bastion of Remembrance
29%inclusion2 decks7 decks
11%synergy
The Meathook Massacre
14%inclusion1 decks7 decks
-3%synergy
Contamination
14%inclusion1 decks7 decks
11%synergy
Gate to Phyrexia
14%inclusion1 decks7 decks
13%synergy
Phyrexian Reclamation
14%inclusion1 decks7 decks
4%synergy
Cover of Darkness
14%inclusion1 decks7 decks
11%synergy
Infernal Darkness
14%inclusion1 decks7 decks
14%synergy
Phyrexian Arena
14%inclusion1 decks7 decks
-25%synergy
Black Market Connections
14%inclusion1 decks7 decks
-10%synergy
Mortal Combat
14%inclusion1 decks7 decks
14%synergy
Necrogen Communion
14%inclusion1 decks7 decks
13%synergy
Planeswalkers
Vraska, Betrayal's Sting
29%inclusion2 decks7 decks
26%synergy
Utility Lands
Cabal Coffers
71%inclusion5 decks7 decks
17%synergy
Bojuka Bog
57%inclusion4 decks7 decks
10%synergy
Cabal Stronghold
57%inclusion4 decks7 decks
23%synergy
Vesuva
43%inclusion3 decks7 decks
40%synergy
War Room
29%inclusion2 decks7 decks
13%synergy
Deserted Temple
29%inclusion2 decks7 decks
24%synergy
Karn's Bastion
29%inclusion2 decks7 decks
25%synergy
Takenuma, Abandoned Mire
29%inclusion2 decks7 decks
13%synergy
Castle Locthwain
29%inclusion2 decks7 decks
12%synergy
Reliquary Tower
29%inclusion2 decks7 decks
-1%synergy
Temple of the False God
29%inclusion2 decks7 decks
21%synergy
Nykthos, Shrine to Nyx
29%inclusion2 decks7 decks
-1%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
Crypt of Agadeem
14%inclusion1 decks7 decks
3%synergy
Witch's Cottage
14%inclusion1 decks7 decks
-10%synergy
Geier Reach Sanitarium
14%inclusion1 decks7 decks
4%synergy
The Black Gate
14%inclusion1 decks7 decks
11%synergy
Three Tree City
14%inclusion1 decks7 decks
10%synergy
Volrath's Stronghold
14%inclusion1 decks7 decks
11%synergy
Command Beacon
14%inclusion1 decks7 decks
6%synergy
Field of Ruin
14%inclusion1 decks7 decks
12%synergy
Mudflat Village
14%inclusion1 decks7 decks
12%synergy
Rogue's Passage
14%inclusion1 decks7 decks
-5%synergy
Mana Artifacts
Arcane Signet
71%inclusion5 decks7 decks
10%synergy
Sol Ring
71%inclusion5 decks7 decks
-14%synergy
Patchwork Banner
43%inclusion3 decks7 decks
39%synergy
Gauntlet of Power
29%inclusion2 decks7 decks
25%synergy
Lotus Petal
29%inclusion2 decks7 decks
21%synergy
Mind Stone
29%inclusion2 decks7 decks
0%synergy
Commander's Sphere
14%inclusion1 decks7 decks
6%synergy
Staff of Compleation
14%inclusion1 decks7 decks
13%synergy
Charcoal Diamond
14%inclusion1 decks7 decks
-8%synergy
Glistening Sphere
14%inclusion1 decks7 decks
13%synergy
Heraldic Banner
14%inclusion1 decks7 decks
9%synergy
Thought Vessel
14%inclusion1 decks7 decks
-11%synergy
Mox Amber
14%inclusion1 decks7 decks
10%synergy
Fellwar Stone
14%inclusion1 decks7 decks
0%synergy
Mox Diamond
14%inclusion1 decks7 decks
11%synergy
Lands
Swamp
86%inclusion6 decks7 decks
-10%synergy
Path of Ancestry
29%inclusion2 decks7 decks
23%synergy
Cavern of Souls
29%inclusion2 decks7 decks
22%synergy
Prismatic Vista
14%inclusion1 decks7 decks
12%synergy
Command Tower
14%inclusion1 decks7 decks
9%synergy
Fell the Profane
14%inclusion1 decks7 decks
-5%synergy
Fabled Passage
14%inclusion1 decks7 decks
12%synergy
Myriad Landscape
14%inclusion1 decks7 decks
-11%synergy
Agadeem's Awakening
14%inclusion1 decks7 decks
7%synergy
Verdant Catacombs
14%inclusion1 decks7 decks
11%synergy
Gemstone Caverns
14%inclusion1 decks7 decks
10%synergy
Bloodstained Mire
14%inclusion1 decks7 decks
11%synergy
Evolving Wilds
14%inclusion1 decks7 decks
10%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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