Karumonix, the Rat King (Commander) - cEDH

Karumonix, the Rat King
Rank #385
8decks
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Background image for Building Rat Typal With Marrow-Gnawer
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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Piper of the Swarm
88%inclusion7 decks8 decks
81%synergy
Rat Colony
75%inclusion6 decks8 decks
69%synergy
Marrow-Gnawer
63%inclusion5 decks8 decks
59%synergy
Thrumming Stone
50%inclusion4 decks8 decks
46%synergy
Swarmyard
50%inclusion4 decks8 decks
44%synergy
Pack Rat
50%inclusion4 decks8 decks
44%synergy
Diabolic Intent
50%inclusion4 decks8 decks
35%synergy
Bontu's Monument
63%inclusion5 decks8 decks
34%synergy
Skullclamp
50%inclusion4 decks8 decks
28%synergy
Infernal Grasp
50%inclusion4 decks8 decks
25%synergy
Top Cards
Dark Ritual
75%inclusion6 decks8 decks
8%synergy
Jet Medallion
63%inclusion5 decks8 decks
1%synergy
Game Changers
Demonic Tutor
75%inclusion6 decks8 decks
48%synergy
Vampiric Tutor
63%inclusion5 decks8 decks
42%synergy
Imperial Seal
25%inclusion2 decks8 decks
18%synergy
Opposition Agent
25%inclusion2 decks8 decks
15%synergy
Bolas's Citadel
25%inclusion2 decks8 decks
-4%synergy
Mana Vault
25%inclusion2 decks8 decks
18%synergy
Necropotence
25%inclusion2 decks8 decks
10%synergy
The One Ring
13%inclusion1 decks8 decks
3%synergy
Ad Nauseam
13%inclusion1 decks8 decks
10%synergy
Chrome Mox
13%inclusion1 decks8 decks
7%synergy
Creatures
Ogre Slumlord
38%inclusion3 decks8 decks
27%synergy
Crypt Rats
38%inclusion3 decks8 decks
33%synergy
Ayara, First of Locthwain
38%inclusion3 decks8 decks
12%synergy
Ashcoat of the Shadow Swarm
38%inclusion3 decks8 decks
34%synergy
Blightbelly Rat
38%inclusion3 decks8 decks
34%synergy
Ichor Rats
38%inclusion3 decks8 decks
34%synergy
Relentless Rats
25%inclusion2 decks8 decks
23%synergy
Species Specialist
25%inclusion2 decks8 decks
22%synergy
Burglar Rat
25%inclusion2 decks8 decks
14%synergy
Voracious Vermin
25%inclusion2 decks8 decks
22%synergy
Crypt Ghast
25%inclusion2 decks8 decks
-23%synergy
Rancid Rats
25%inclusion2 decks8 decks
22%synergy
Lord Skitter, Sewer King
25%inclusion2 decks8 decks
17%synergy
Nezumi Prowler
25%inclusion2 decks8 decks
24%synergy
Persistent Marshstalker
17%inclusion1 decks6 decks
14%synergy
Daggerfang Duo
17%inclusion1 decks6 decks
16%synergy
Bog Rats
13%inclusion1 decks8 decks
12%synergy
Plague Stinger
13%inclusion1 decks8 decks
12%synergy
Rabid Rats
13%inclusion1 decks8 decks
12%synergy
Murderous Rider
13%inclusion1 decks8 decks
6%synergy
Nezumi Graverobber
13%inclusion1 decks8 decks
11%synergy
Thriving Rats
13%inclusion1 decks8 decks
12%synergy
Plaguecrafter
13%inclusion1 decks8 decks
-8%synergy
Morbid Opportunist
13%inclusion1 decks8 decks
-11%synergy
Roaming Throne
13%inclusion1 decks8 decks
9%synergy
Gray Merchant of Asphodel
13%inclusion1 decks8 decks
-39%synergy
Rotting Rats
13%inclusion1 decks8 decks
9%synergy
Tangled Colony
13%inclusion1 decks8 decks
9%synergy
Phyrexian Obliterator
13%inclusion1 decks8 decks
1%synergy
Bloodletter of Aclazotz
13%inclusion1 decks8 decks
2%synergy
Fleshbag Marauder
13%inclusion1 decks8 decks
-4%synergy
Blood Artist
13%inclusion1 decks8 decks
-19%synergy
Ruthless Radrat
13%inclusion1 decks8 decks
12%synergy
Zulaport Cutthroat
13%inclusion1 decks8 decks
-11%synergy
Swarm of Rats
13%inclusion1 decks8 decks
10%synergy
Marauding Blight-Priest
13%inclusion1 decks8 decks
6%synergy
Chittering Skitterling
13%inclusion1 decks8 decks
12%synergy
Lord Skitter's Butcher
13%inclusion1 decks8 decks
9%synergy
Gix, Yawgmoth Praetor
13%inclusion1 decks8 decks
7%synergy
Massacre Wurm
13%inclusion1 decks8 decks
-5%synergy
Yawgmoth, Thran Physician
13%inclusion1 decks8 decks
2%synergy
Diregraf Ghoul
13%inclusion1 decks8 decks
12%synergy
Skirge Familiar
13%inclusion1 decks8 decks
7%synergy
Sewer Rats
13%inclusion1 decks8 decks
12%synergy
Nashi, Moon Sage's Scion
13%inclusion1 decks8 decks
9%synergy
Typhoid Rats
13%inclusion1 decks8 decks
9%synergy
Grim Haruspex
13%inclusion1 decks8 decks
4%synergy
Vito, Thorn of the Dusk Rose
13%inclusion1 decks8 decks
2%synergy
Stronghold Rats
13%inclusion1 decks8 decks
9%synergy
Dauthi Voidwalker
13%inclusion1 decks8 decks
-3%synergy
Instants
Cut Down
25%inclusion2 decks8 decks
21%synergy
Fatal Push
25%inclusion2 decks8 decks
22%synergy
Go for the Throat
25%inclusion2 decks8 decks
2%synergy
Imp's Mischief
25%inclusion2 decks8 decks
0%synergy
Vraska's Fall
25%inclusion2 decks8 decks
22%synergy
Deadly Dispute
25%inclusion2 decks8 decks
-1%synergy
Defile
25%inclusion2 decks8 decks
-12%synergy
Cabal Ritual
25%inclusion2 decks8 decks
7%synergy
Culling the Weak
25%inclusion2 decks8 decks
9%synergy
Tainted Strike
25%inclusion2 decks8 decks
22%synergy
Murder
25%inclusion2 decks8 decks
15%synergy
Fell the Profane
14%inclusion1 decks7 decks
-5%synergy
Flare of Malice
14%inclusion1 decks7 decks
1%synergy
Hero's Downfall
13%inclusion1 decks8 decks
6%synergy
Deadly Rollick
13%inclusion1 decks8 decks
-12%synergy
Bloodline Culling
13%inclusion1 decks8 decks
11%synergy
Whisper of the Dross
13%inclusion1 decks8 decks
10%synergy
Entomb
13%inclusion1 decks8 decks
0%synergy
Snuff Out
13%inclusion1 decks8 decks
-1%synergy
Village Rites
13%inclusion1 decks8 decks
-13%synergy
Sheoldred's Edict
13%inclusion1 decks8 decks
-2%synergy
Flunk
13%inclusion1 decks8 decks
12%synergy
Soul Shatter
13%inclusion1 decks8 decks
1%synergy
Withering Boon
13%inclusion1 decks8 decks
8%synergy
Bitter Triumph
13%inclusion1 decks8 decks
3%synergy
Grim Affliction
13%inclusion1 decks8 decks
11%synergy
Plumb the Forbidden
13%inclusion1 decks8 decks
8%synergy
Blood Pact
13%inclusion1 decks8 decks
8%synergy
Victim of Night
13%inclusion1 decks8 decks
11%synergy
Erebos's Intervention
13%inclusion1 decks8 decks
10%synergy
Eliminate
13%inclusion1 decks8 decks
12%synergy
Sudden Spoiling
13%inclusion1 decks8 decks
4%synergy
Tragic Slip
13%inclusion1 decks8 decks
-7%synergy
Sorceries
Diabolic Tutor
38%inclusion3 decks8 decks
23%synergy
Grim Tutor
38%inclusion3 decks8 decks
26%synergy
Patriarch's Bidding
25%inclusion2 decks8 decks
21%synergy
Yawgmoth's Will
25%inclusion2 decks8 decks
22%synergy
Duress
25%inclusion2 decks8 decks
18%synergy
Profane Tutor
25%inclusion2 decks8 decks
21%synergy
Feed the Swarm
25%inclusion2 decks8 decks
-25%synergy
Infectious Inquiry
25%inclusion2 decks8 decks
22%synergy
Night's Whisper
25%inclusion2 decks8 decks
0%synergy
Toxic Deluge
25%inclusion2 decks8 decks
-12%synergy
Sign in Blood
25%inclusion2 decks8 decks
-11%synergy
Cruel Tutor
25%inclusion2 decks8 decks
24%synergy
Insatiable Avarice
25%inclusion2 decks8 decks
13%synergy
Psychic Whorl
17%inclusion1 decks6 decks
16%synergy
Fell
17%inclusion1 decks6 decks
13%synergy
Vat Emergence
13%inclusion1 decks8 decks
11%synergy
Spread the Sickness
13%inclusion1 decks8 decks
12%synergy
Torment of Hailfire
13%inclusion1 decks8 decks
-3%synergy
Forever Young
13%inclusion1 decks8 decks
11%synergy
Feed the Infection
13%inclusion1 decks8 decks
12%synergy
Nightmare Unmaking
13%inclusion1 decks8 decks
12%synergy
Unearth
13%inclusion1 decks8 decks
4%synergy
Read the Bones
13%inclusion1 decks8 decks
-4%synergy
Mutilate
13%inclusion1 decks8 decks
-5%synergy
Scheming Symmetry
13%inclusion1 decks8 decks
8%synergy
Caress of Phyrexia
13%inclusion1 decks8 decks
12%synergy
Hex
13%inclusion1 decks8 decks
12%synergy
Reanimate
13%inclusion1 decks8 decks
-27%synergy
Demonic Collusion
13%inclusion1 decks8 decks
12%synergy
Agadeem's Awakening
13%inclusion1 decks8 decks
5%synergy
Gruesome Fate
13%inclusion1 decks8 decks
10%synergy
Praetor's Grasp
13%inclusion1 decks8 decks
9%synergy
Drown in Ichor
13%inclusion1 decks8 decks
9%synergy
Ancient Craving
13%inclusion1 decks8 decks
10%synergy
Invoke Despair
13%inclusion1 decks8 decks
10%synergy
Corrupt
13%inclusion1 decks8 decks
10%synergy
Dirge of Dread
13%inclusion1 decks8 decks
12%synergy
Kindred Dominance
13%inclusion1 decks8 decks
8%synergy
Damnation
13%inclusion1 decks8 decks
-8%synergy
Brainspoil
13%inclusion1 decks8 decks
12%synergy
Plague of Vermin
13%inclusion1 decks8 decks
10%synergy
Pact of the Serpent
13%inclusion1 decks8 decks
11%synergy
Secret Salvage
13%inclusion1 decks8 decks
11%synergy
Utility Artifacts
Herald's Horn
38%inclusion3 decks8 decks
32%synergy
Sensei's Divining Top
25%inclusion2 decks8 decks
17%synergy
Contagion Clasp
25%inclusion2 decks8 decks
23%synergy
Contagion Engine
25%inclusion2 decks8 decks
23%synergy
Eldrazi Monument
25%inclusion2 decks8 decks
23%synergy
Swiftfoot Boots
25%inclusion2 decks8 decks
-6%synergy
Lightning Greaves
25%inclusion2 decks8 decks
-9%synergy
Phyrexian Altar
25%inclusion2 decks8 decks
11%synergy
Icon of Ancestry
13%inclusion1 decks8 decks
12%synergy
Skeleton Key
13%inclusion1 decks8 decks
12%synergy
Hall of Triumph
13%inclusion1 decks8 decks
12%synergy
Prosthetic Injector
13%inclusion1 decks8 decks
12%synergy
Library of Leng
13%inclusion1 decks8 decks
11%synergy
Vanquisher's Banner
13%inclusion1 decks8 decks
8%synergy
Expedition Map
13%inclusion1 decks8 decks
1%synergy
Ashnod's Altar
13%inclusion1 decks8 decks
-7%synergy
Locket of Yesterdays
13%inclusion1 decks8 decks
12%synergy
Ivory Tower
13%inclusion1 decks8 decks
12%synergy
Altar of Dementia
13%inclusion1 decks8 decks
7%synergy
Thornbite Staff
13%inclusion1 decks8 decks
10%synergy
Grafted Exoskeleton
13%inclusion1 decks8 decks
11%synergy
Spellbook
13%inclusion1 decks8 decks
12%synergy
Pithing Needle
13%inclusion1 decks8 decks
12%synergy
Enchantments
Oversold Cemetery
25%inclusion2 decks8 decks
20%synergy
Phyrexian Arena
25%inclusion2 decks8 decks
-15%synergy
The Meathook Massacre
13%inclusion1 decks8 decks
-5%synergy
Price of Knowledge
13%inclusion1 decks8 decks
12%synergy
Underworld Connections
13%inclusion1 decks8 decks
11%synergy
Black Market
13%inclusion1 decks8 decks
-9%synergy
Okiba Reckoner Raid
13%inclusion1 decks8 decks
12%synergy
Vampiric Rites
13%inclusion1 decks8 decks
6%synergy
Grave Pact
13%inclusion1 decks8 decks
-7%synergy
Sanguine Bond
13%inclusion1 decks8 decks
1%synergy
Dictate of Erebos
13%inclusion1 decks8 decks
2%synergy
Contamination
13%inclusion1 decks8 decks
9%synergy
Tribute to Horobi
13%inclusion1 decks8 decks
11%synergy
Exquisite Blood
13%inclusion1 decks8 decks
-1%synergy
Intimidation
13%inclusion1 decks8 decks
12%synergy
Snake Cult Initiation
13%inclusion1 decks8 decks
12%synergy
Phyrexian Reclamation
13%inclusion1 decks8 decks
3%synergy
Painful Quandary
13%inclusion1 decks8 decks
2%synergy
Bastion of Remembrance
13%inclusion1 decks8 decks
-4%synergy
Oubliette
13%inclusion1 decks8 decks
10%synergy
Mortal Combat
13%inclusion1 decks8 decks
12%synergy
Infernal Darkness
13%inclusion1 decks8 decks
12%synergy
Bad Moon
13%inclusion1 decks8 decks
9%synergy
Necrogen Communion
13%inclusion1 decks8 decks
11%synergy
Phyresis
13%inclusion1 decks8 decks
10%synergy
Underworld Dreams
13%inclusion1 decks8 decks
6%synergy
Gate to Phyrexia
13%inclusion1 decks8 decks
12%synergy
Black Market Connections
13%inclusion1 decks8 decks
-11%synergy
Virtue of Persistence
13%inclusion1 decks8 decks
7%synergy
Planeswalkers
Vraska, Betrayal's Sting
13%inclusion1 decks8 decks
10%synergy
Utility Lands
Bojuka Bog
50%inclusion4 decks8 decks
3%synergy
Cabal Coffers
50%inclusion4 decks8 decks
-5%synergy
Urborg, Tomb of Yawgmoth
50%inclusion4 decks8 decks
12%synergy
Cabal Stronghold
25%inclusion2 decks8 decks
-10%synergy
Vesuva
25%inclusion2 decks8 decks
22%synergy
War Room
25%inclusion2 decks8 decks
9%synergy
Karn's Bastion
25%inclusion2 decks8 decks
21%synergy
Castle Locthwain
25%inclusion2 decks8 decks
8%synergy
Reliquary Tower
25%inclusion2 decks8 decks
-5%synergy
Takenuma, Abandoned Mire
25%inclusion2 decks8 decks
9%synergy
Mudflat Village
17%inclusion1 decks6 decks
14%synergy
Three Tree City
17%inclusion1 decks6 decks
12%synergy
Vault of Whispers
13%inclusion1 decks8 decks
7%synergy
Phyrexian Tower
13%inclusion1 decks8 decks
-13%synergy
Ghost Quarter
13%inclusion1 decks8 decks
10%synergy
Buried Ruin
13%inclusion1 decks8 decks
7%synergy
Witch's Cottage
13%inclusion1 decks8 decks
-12%synergy
Volrath's Stronghold
13%inclusion1 decks8 decks
9%synergy
Geier Reach Sanitarium
13%inclusion1 decks8 decks
2%synergy
The Black Gate
13%inclusion1 decks8 decks
9%synergy
Nykthos, Shrine to Nyx
13%inclusion1 decks8 decks
-17%synergy
Crypt of Agadeem
13%inclusion1 decks8 decks
1%synergy
Access Tunnel
13%inclusion1 decks8 decks
9%synergy
Rogue's Passage
13%inclusion1 decks8 decks
-7%synergy
Command Beacon
13%inclusion1 decks8 decks
4%synergy
Field of Ruin
13%inclusion1 decks8 decks
10%synergy
Deserted Temple
13%inclusion1 decks8 decks
8%synergy
Temple of the False God
13%inclusion1 decks8 decks
5%synergy
Mana Artifacts
Arcane Signet
88%inclusion7 decks8 decks
26%synergy
Sol Ring
88%inclusion7 decks8 decks
2%synergy
Heraldic Banner
50%inclusion4 decks8 decks
45%synergy
Patchwork Banner
50%inclusion3 decks6 decks
46%synergy
Commander's Sphere
25%inclusion2 decks8 decks
16%synergy
Charcoal Diamond
25%inclusion2 decks8 decks
3%synergy
Thought Vessel
25%inclusion2 decks8 decks
-1%synergy
Mind Stone
25%inclusion2 decks8 decks
-4%synergy
Gauntlet of Power
13%inclusion1 decks8 decks
9%synergy
Staff of Compleation
13%inclusion1 decks8 decks
11%synergy
Lotus Petal
13%inclusion1 decks8 decks
5%synergy
Throne of Eldraine
13%inclusion1 decks8 decks
3%synergy
Mox Amber
13%inclusion1 decks8 decks
8%synergy
Decanter of Endless Water
13%inclusion1 decks8 decks
10%synergy
Fellwar Stone
13%inclusion1 decks8 decks
-2%synergy
Lands
Swamp
88%inclusion7 decks8 decks
-8%synergy
Cavern of Souls
38%inclusion3 decks8 decks
31%synergy
Command Tower
25%inclusion2 decks8 decks
19%synergy
Myriad Landscape
25%inclusion2 decks8 decks
-1%synergy
Path of Ancestry
25%inclusion2 decks8 decks
20%synergy
Fell the Profane
14%inclusion1 decks7 decks
-5%synergy
Escape Tunnel
13%inclusion1 decks8 decks
11%synergy
Prismatic Vista
13%inclusion1 decks8 decks
10%synergy
Fabled Passage
13%inclusion1 decks8 decks
11%synergy
Agadeem's Awakening
13%inclusion1 decks8 decks
5%synergy
Verdant Catacombs
13%inclusion1 decks8 decks
9%synergy
Snow-Covered Swamp
13%inclusion1 decks8 decks
6%synergy
Marsh Flats
13%inclusion1 decks8 decks
9%synergy
Evolving Wilds
13%inclusion1 decks8 decks
9%synergy
Polluted Delta
13%inclusion1 decks8 decks
9%synergy
Bloodstained Mire
13%inclusion1 decks8 decks
9%synergy
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