Karumonix, the Rat King (Commander) - cEDH

Karumonix, the Rat King
Rank #412
9decks
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
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Marrow-Gnawer
78%inclusion7 decks9 decks
74%synergy
Thrumming Stone
78%inclusion7 decks9 decks
74%synergy
Rat Colony
78%inclusion7 decks9 decks
72%synergy
Piper of the Swarm
78%inclusion7 decks9 decks
71%synergy
Skullclamp
89%inclusion8 decks9 decks
66%synergy
Swarmyard
67%inclusion6 decks9 decks
61%synergy
Pack Rat
67%inclusion6 decks9 decks
61%synergy
Ichor Rats
56%inclusion5 decks9 decks
53%synergy
Lord Skitter, Sewer King
56%inclusion5 decks9 decks
48%synergy
Ogre Slumlord
56%inclusion5 decks9 decks
46%synergy
Top Cards
Dark Ritual
89%inclusion8 decks9 decks
21%synergy
Jet Medallion
78%inclusion7 decks9 decks
16%synergy
Ayara, First of Locthwain
56%inclusion5 decks9 decks
30%synergy
Bontu's Monument
56%inclusion5 decks9 decks
28%synergy
Diabolic Intent
44%inclusion4 decks9 decks
29%synergy
Vraska's Fall
44%inclusion4 decks9 decks
41%synergy
Ashnod's Altar
44%inclusion4 decks9 decks
24%synergy
Infectious Inquiry
44%inclusion4 decks9 decks
42%synergy
Tainted Strike
44%inclusion4 decks9 decks
41%synergy
Ashcoat of the Shadow Swarm
44%inclusion4 decks9 decks
41%synergy
Game Changers
Demonic Tutor
78%inclusion7 decks9 decks
51%synergy
Vampiric Tutor
44%inclusion4 decks9 decks
24%synergy
Bolas's Citadel
33%inclusion3 decks9 decks
6%synergy
Imperial Seal
22%inclusion2 decks9 decks
15%synergy
Mana Vault
22%inclusion2 decks9 decks
16%synergy
Necropotence
22%inclusion2 decks9 decks
8%synergy
Chrome Mox
22%inclusion2 decks9 decks
16%synergy
Opposition Agent
11%inclusion1 decks9 decks
2%synergy
Ad Nauseam
11%inclusion1 decks9 decks
8%synergy
Creatures
Crypt Rats
33%inclusion3 decks9 decks
29%synergy
Rotting Rats
33%inclusion3 decks9 decks
30%synergy
Burglar Rat
33%inclusion3 decks9 decks
23%synergy
Lord Skitter's Butcher
33%inclusion3 decks9 decks
30%synergy
Species Specialist
33%inclusion3 decks9 decks
30%synergy
Crypt Ghast
33%inclusion3 decks9 decks
-13%synergy
Blightbelly Rat
33%inclusion3 decks9 decks
30%synergy
Morbid Opportunist
22%inclusion2 decks9 decks
-2%synergy
Ravenous Rats
22%inclusion2 decks9 decks
21%synergy
Blood Artist
22%inclusion2 decks9 decks
-9%synergy
Nezumi Linkbreaker
22%inclusion2 decks9 decks
21%synergy
Grim Haruspex
22%inclusion2 decks9 decks
14%synergy
Zulaport Cutthroat
22%inclusion2 decks9 decks
-1%synergy
Voracious Vermin
22%inclusion2 decks9 decks
20%synergy
Twisted Sewer-Witch
22%inclusion2 decks9 decks
21%synergy
Changeling Outcast
22%inclusion2 decks9 decks
17%synergy
Nezumi Informant
22%inclusion2 decks9 decks
16%synergy
Drainpipe Vermin
22%inclusion2 decks9 decks
21%synergy
Septic Rats
22%inclusion2 decks9 decks
21%synergy
Gnat Miser
22%inclusion2 decks9 decks
20%synergy
Typhoid Rats
22%inclusion2 decks9 decks
19%synergy
Plague Stinger
11%inclusion1 decks9 decks
10%synergy
Chittering Rats
11%inclusion1 decks9 decks
11%synergy
Relentless Rats
11%inclusion1 decks9 decks
9%synergy
Murderous Rider
11%inclusion1 decks9 decks
5%synergy
Plaguecrafter
11%inclusion1 decks9 decks
-9%synergy
Gnawing Vermin
11%inclusion1 decks9 decks
10%synergy
Gray Merchant of Asphodel
11%inclusion1 decks9 decks
-39%synergy
Tangled Colony
11%inclusion1 decks9 decks
8%synergy
Fleshbag Marauder
11%inclusion1 decks9 decks
-6%synergy
Throat Slitter
11%inclusion1 decks9 decks
9%synergy
Mikaeus, the Unhallowed
11%inclusion1 decks9 decks
4%synergy
Diregraf Ghoul
11%inclusion1 decks9 decks
11%synergy
Persistent Marshstalker
11%inclusion1 decks9 decks
8%synergy
Engine Rat
11%inclusion1 decks9 decks
9%synergy
Chittering Witch
11%inclusion1 decks9 decks
7%synergy
Massacre Wurm
11%inclusion1 decks9 decks
-6%synergy
Yawgmoth, Thran Physician
11%inclusion1 decks9 decks
1%synergy
Nezumi Cutthroat
11%inclusion1 decks9 decks
10%synergy
Pitiless Plunderer
11%inclusion1 decks9 decks
-9%synergy
Ratcatcher
11%inclusion1 decks9 decks
8%synergy
Skirge Familiar
11%inclusion1 decks9 decks
6%synergy
K'rrik, Son of Yawgmoth
11%inclusion1 decks9 decks
-8%synergy
Skithiryx, the Blight Dragon
11%inclusion1 decks9 decks
10%synergy
Rancid Rats
11%inclusion1 decks9 decks
9%synergy
Midnight Reaper
11%inclusion1 decks9 decks
3%synergy
Stronghold Rats
11%inclusion1 decks9 decks
8%synergy
Ruin Rat
11%inclusion1 decks9 decks
10%synergy
Vampire Nighthawk
11%inclusion1 decks9 decks
6%synergy
Instants
Cabal Ritual
33%inclusion3 decks9 decks
14%synergy
Culling the Weak
33%inclusion3 decks9 decks
15%synergy
Deadly Rollick
22%inclusion2 decks9 decks
-4%synergy
Fatal Push
22%inclusion2 decks9 decks
19%synergy
Entomb
22%inclusion2 decks9 decks
10%synergy
Imp's Mischief
22%inclusion2 decks9 decks
-3%synergy
Deadly Dispute
22%inclusion2 decks9 decks
-5%synergy
Plumb the Forbidden
22%inclusion2 decks9 decks
18%synergy
Fell the Profane
11%inclusion1 decks9 decks
-9%synergy
Cut Down
11%inclusion1 decks9 decks
8%synergy
Sheoldred's Edict
11%inclusion1 decks9 decks
-4%synergy
Go for the Throat
11%inclusion1 decks9 decks
-11%synergy
Snuff Out
11%inclusion1 decks9 decks
-3%synergy
Village Rites
11%inclusion1 decks9 decks
-15%synergy
Anoint with Affliction
11%inclusion1 decks9 decks
11%synergy
Flare of Malice
11%inclusion1 decks9 decks
-2%synergy
Withering Boon
11%inclusion1 decks9 decks
7%synergy
Bitter Triumph
11%inclusion1 decks9 decks
1%synergy
Raise the Draugr
11%inclusion1 decks9 decks
10%synergy
Infernal Grasp
11%inclusion1 decks9 decks
-14%synergy
Blood Pact
11%inclusion1 decks9 decks
7%synergy
Victim of Night
11%inclusion1 decks9 decks
10%synergy
Sudden Spoiling
11%inclusion1 decks9 decks
3%synergy
Erebos's Intervention
11%inclusion1 decks9 decks
9%synergy
Withering Torment
11%inclusion1 decks9 decks
-21%synergy
Sorceries
Kindred Dominance
44%inclusion4 decks9 decks
40%synergy
Reanimate
33%inclusion3 decks9 decks
-8%synergy
Toxic Deluge
33%inclusion3 decks9 decks
-4%synergy
Sign in Blood
33%inclusion3 decks9 decks
-1%synergy
Grim Tutor
33%inclusion3 decks9 decks
22%synergy
Secret Salvage
33%inclusion3 decks9 decks
32%synergy
Diabolic Tutor
22%inclusion2 decks9 decks
9%synergy
Patriarch's Bidding
22%inclusion2 decks9 decks
18%synergy
Profane Tutor
22%inclusion2 decks9 decks
18%synergy
Torment of Hailfire
22%inclusion2 decks9 decks
8%synergy
Phyresis Outbreak
22%inclusion2 decks9 decks
21%synergy
Swarmyard Massacre
22%inclusion2 decks9 decks
20%synergy
Feed the Swarm
22%inclusion2 decks9 decks
-28%synergy
Night's Whisper
22%inclusion2 decks9 decks
-3%synergy
Insatiable Avarice
22%inclusion2 decks9 decks
12%synergy
Beseech the Mirror
22%inclusion2 decks9 decks
15%synergy
Damnation
22%inclusion2 decks9 decks
2%synergy
Bloodline Bidding
20%inclusion1 decks5 decks
16%synergy
Yawgmoth's Will
11%inclusion1 decks9 decks
8%synergy
Nightmare Unmaking
11%inclusion1 decks9 decks
11%synergy
Revenge of the Rats
11%inclusion1 decks9 decks
8%synergy
Duress
11%inclusion1 decks9 decks
5%synergy
Predators' Hour
11%inclusion1 decks9 decks
10%synergy
Dead of Winter
11%inclusion1 decks9 decks
10%synergy
Demonic Collusion
11%inclusion1 decks9 decks
11%synergy
Agadeem's Awakening
11%inclusion1 decks9 decks
3%synergy
Read the Bones
11%inclusion1 decks9 decks
-4%synergy
Mutilate
11%inclusion1 decks9 decks
-4%synergy
Scheming Symmetry
11%inclusion1 decks9 decks
7%synergy
Exsanguinate
11%inclusion1 decks9 decks
-14%synergy
Caress of Phyrexia
11%inclusion1 decks9 decks
11%synergy
Geth's Summons
11%inclusion1 decks9 decks
11%synergy
Eaten Alive
11%inclusion1 decks9 decks
8%synergy
Cruel Tutor
11%inclusion1 decks9 decks
10%synergy
Drown in Ichor
11%inclusion1 decks9 decks
8%synergy
Crippling Fear
11%inclusion1 decks9 decks
8%synergy
Plague of Vermin
11%inclusion1 decks9 decks
9%synergy
Utility Artifacts
Phyrexian Altar
33%inclusion3 decks9 decks
19%synergy
Eldrazi Monument
33%inclusion3 decks9 decks
32%synergy
Contagion Engine
22%inclusion2 decks9 decks
21%synergy
Nim Deathmantle
22%inclusion2 decks9 decks
19%synergy
Expedition Map
22%inclusion2 decks9 decks
11%synergy
Locket of Yesterdays
22%inclusion2 decks9 decks
22%synergy
Herald's Horn
22%inclusion2 decks9 decks
17%synergy
Lightning Greaves
22%inclusion2 decks9 decks
-12%synergy
Altar of Dementia
22%inclusion2 decks9 decks
17%synergy
Thornbite Staff
22%inclusion2 decks9 decks
19%synergy
Grafted Exoskeleton
22%inclusion2 decks9 decks
21%synergy
The Darkness Crystal
13%inclusion1 decks8 decks
-8%synergy
Sensei's Divining Top
11%inclusion1 decks9 decks
3%synergy
Contagion Clasp
11%inclusion1 decks9 decks
9%synergy
Coat of Arms
11%inclusion1 decks9 decks
9%synergy
Prosthetic Injector
11%inclusion1 decks9 decks
11%synergy
Banner of Kinship
11%inclusion1 decks9 decks
9%synergy
Vanquisher's Banner
11%inclusion1 decks9 decks
7%synergy
Whispersilk Cloak
11%inclusion1 decks9 decks
5%synergy
Door of Destinies
11%inclusion1 decks9 decks
9%synergy
Pithing Needle
11%inclusion1 decks9 decks
11%synergy
Swiftfoot Boots
11%inclusion1 decks9 decks
-20%synergy
Helm of Awakening
11%inclusion1 decks9 decks
10%synergy
Enchantments
Bastion of Remembrance
33%inclusion3 decks9 decks
16%synergy
Phyrexian Arena
33%inclusion3 decks9 decks
-6%synergy
The Meathook Massacre
22%inclusion2 decks9 decks
5%synergy
Black Market
22%inclusion2 decks9 decks
2%synergy
Dictate of Erebos
22%inclusion2 decks9 decks
11%synergy
Oubliette
22%inclusion2 decks9 decks
20%synergy
Cover of Darkness
22%inclusion2 decks9 decks
19%synergy
Contamination
11%inclusion1 decks9 decks
8%synergy
Glistening Oil
11%inclusion1 decks9 decks
10%synergy
Phyrexian Reclamation
11%inclusion1 decks9 decks
1%synergy
Grave Pact
11%inclusion1 decks9 decks
-8%synergy
Exquisite Blood
11%inclusion1 decks9 decks
-2%synergy
Carnival of Souls
11%inclusion1 decks9 decks
10%synergy
No Mercy
11%inclusion1 decks9 decks
4%synergy
Gate to Phyrexia
11%inclusion1 decks9 decks
10%synergy
Mortal Combat
11%inclusion1 decks9 decks
11%synergy
Infernal Darkness
11%inclusion1 decks9 decks
11%synergy
Necrogen Communion
11%inclusion1 decks9 decks
9%synergy
Planeswalkers
Vraska, Betrayal's Sting
22%inclusion2 decks9 decks
20%synergy
Utility Lands
Urborg, Tomb of Yawgmoth
67%inclusion6 decks9 decks
29%synergy
Bojuka Bog
44%inclusion4 decks9 decks
-3%synergy
Cabal Stronghold
44%inclusion4 decks9 decks
11%synergy
Phyrexian Tower
44%inclusion4 decks9 decks
18%synergy
Cabal Coffers
44%inclusion4 decks9 decks
-10%synergy
Vesuva
33%inclusion3 decks9 decks
31%synergy
Nykthos, Shrine to Nyx
33%inclusion3 decks9 decks
4%synergy
Karn's Bastion
33%inclusion3 decks9 decks
30%synergy
Three Tree City
33%inclusion3 decks9 decks
29%synergy
Susur Secundi, Void Altar
25%inclusion2 decks8 decks
18%synergy
The Black Gate
22%inclusion2 decks9 decks
19%synergy
Crypt of Agadeem
22%inclusion2 decks9 decks
11%synergy
Inkmoth Nexus
22%inclusion2 decks9 decks
21%synergy
Deserted Temple
22%inclusion2 decks9 decks
18%synergy
Mudflat Village
22%inclusion2 decks9 decks
20%synergy
Castle Locthwain
22%inclusion2 decks9 decks
6%synergy
Reliquary Tower
22%inclusion2 decks9 decks
-7%synergy
Temple of the False God
22%inclusion2 decks9 decks
15%synergy
Shizo, Death's Storehouse
11%inclusion1 decks9 decks
1%synergy
Ghost Quarter
11%inclusion1 decks9 decks
9%synergy
Barren Moor
11%inclusion1 decks9 decks
2%synergy
Buried Ruin
11%inclusion1 decks9 decks
6%synergy
Spymaster's Vault
11%inclusion1 decks9 decks
1%synergy
Witch's Cottage
11%inclusion1 decks9 decks
-13%synergy
War Room
11%inclusion1 decks9 decks
-5%synergy
Volrath's Stronghold
11%inclusion1 decks9 decks
7%synergy
Geier Reach Sanitarium
11%inclusion1 decks9 decks
1%synergy
Command Beacon
11%inclusion1 decks9 decks
3%synergy
Minas Morgul, Dark Fortress
11%inclusion1 decks9 decks
8%synergy
Takenuma, Abandoned Mire
11%inclusion1 decks9 decks
-5%synergy
Rogue's Passage
11%inclusion1 decks9 decks
-8%synergy
Field of Ruin
11%inclusion1 decks9 decks
9%synergy
Mana Artifacts
Sol Ring
78%inclusion7 decks9 decks
-8%synergy
Arcane Signet
44%inclusion4 decks9 decks
-17%synergy
Gauntlet of Power
33%inclusion3 decks9 decks
30%synergy
Patchwork Banner
33%inclusion3 decks9 decks
29%synergy
Staff of Compleation
22%inclusion2 decks9 decks
21%synergy
Mind Stone
22%inclusion2 decks9 decks
-5%synergy
Commander's Sphere
11%inclusion1 decks9 decks
4%synergy
Charcoal Diamond
11%inclusion1 decks9 decks
-10%synergy
Glistening Sphere
11%inclusion1 decks9 decks
10%synergy
Lotus Petal
11%inclusion1 decks9 decks
4%synergy
Heraldic Banner
11%inclusion1 decks9 decks
6%synergy
Mox Amber
11%inclusion1 decks9 decks
7%synergy
Thought Vessel
11%inclusion1 decks9 decks
-13%synergy
Lands
Swamp
89%inclusion8 decks9 decks
-7%synergy
Cavern of Souls
22%inclusion2 decks9 decks
15%synergy
Path of Ancestry
22%inclusion2 decks9 decks
17%synergy
Fell the Profane
11%inclusion1 decks9 decks
-9%synergy
Command Tower
11%inclusion1 decks9 decks
5%synergy
Myriad Landscape
11%inclusion1 decks9 decks
-13%synergy
Agadeem's Awakening
11%inclusion1 decks9 decks
3%synergy
Snow-Covered Swamp
11%inclusion1 decks9 decks
5%synergy
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