Karumonix, the Rat King (Commander) - Core Midrange

Karumonix, the Rat King
Rank #412
7decks
As CommanderAs CardAverage DeckDecks
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2345
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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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Utility Lands
Mana Artifacts
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Swarmyard
86%inclusion6 decks7 decks
80%synergy
Piper of the Swarm
86%inclusion6 decks7 decks
79%synergy
Lord Skitter, Sewer King
86%inclusion6 decks7 decks
78%synergy
Ogre Slumlord
86%inclusion6 decks7 decks
76%synergy
Infectious Inquiry
71%inclusion5 decks7 decks
69%synergy
Blightbelly Rat
71%inclusion5 decks7 decks
68%synergy
Marrow-Gnawer
71%inclusion5 decks7 decks
68%synergy
Karn's Bastion
71%inclusion5 decks7 decks
68%synergy
Ravenous Rats
57%inclusion4 decks7 decks
56%synergy
Septic Rats
57%inclusion4 decks7 decks
55%synergy
Top Cards
Dark Ritual
86%inclusion6 decks7 decks
18%synergy
Crypt Rats
57%inclusion4 decks7 decks
53%synergy
Burglar Rat
57%inclusion4 decks7 decks
47%synergy
Vraska's Fall
57%inclusion4 decks7 decks
54%synergy
Tangled Colony
57%inclusion4 decks7 decks
54%synergy
Lord Skitter's Butcher
57%inclusion4 decks7 decks
54%synergy
Pack Rat
57%inclusion4 decks7 decks
51%synergy
Cabal Ritual
57%inclusion4 decks7 decks
38%synergy
Skullclamp
57%inclusion4 decks7 decks
35%synergy
Nezumi Informant
57%inclusion4 decks7 decks
51%synergy
Creatures
Typhoid Rats
57%inclusion4 decks7 decks
54%synergy
Rat Colony
57%inclusion4 decks7 decks
52%synergy
Ichor Rats
57%inclusion4 decks7 decks
54%synergy
Ayara, First of Locthwain
43%inclusion3 decks7 decks
18%synergy
Razortooth Rats
43%inclusion3 decks7 decks
42%synergy
Voracious Vermin
43%inclusion3 decks7 decks
40%synergy
Ashcoat of the Shadow Swarm
43%inclusion3 decks7 decks
39%synergy
Changeling Outcast
43%inclusion3 decks7 decks
38%synergy
Nezumi Prowler
43%inclusion3 decks7 decks
42%synergy
Ratcatcher
43%inclusion3 decks7 decks
40%synergy
Drainpipe Vermin
43%inclusion3 decks7 decks
42%synergy
Gnat Miser
43%inclusion3 decks7 decks
40%synergy
Rancid Rats
43%inclusion3 decks7 decks
41%synergy
Undercity Dire Rat
33%inclusion2 decks6 decks
32%synergy
Rotting Rats
29%inclusion2 decks7 decks
26%synergy
Morbid Opportunist
29%inclusion2 decks7 decks
4%synergy
Gnawing Vermin
29%inclusion2 decks7 decks
27%synergy
Persistent Marshstalker
29%inclusion2 decks7 decks
26%synergy
Engine Rat
29%inclusion2 decks7 decks
27%synergy
Chittering Skitterling
29%inclusion2 decks7 decks
28%synergy
Yawgmoth, Thran Physician
29%inclusion2 decks7 decks
19%synergy
Nezumi Cutthroat
29%inclusion2 decks7 decks
28%synergy
Crypt Ghast
29%inclusion2 decks7 decks
-18%synergy
Nashi, Moon Sage's Scion
29%inclusion2 decks7 decks
25%synergy
Stronghold Rats
29%inclusion2 decks7 decks
25%synergy
Old Flitterfang
29%inclusion2 decks7 decks
28%synergy
Rat King, Verminister
25%inclusion1 decks4 decks
22%synergy
Refurbished Familiar
14%inclusion1 decks7 decks
12%synergy
Thriving Rats
14%inclusion1 decks7 decks
14%synergy
Rabid Rats
14%inclusion1 decks7 decks
14%synergy
Nezumi Ronin
14%inclusion1 decks7 decks
14%synergy
Relentless Rats
14%inclusion1 decks7 decks
13%synergy
Nezumi Graverobber
14%inclusion1 decks7 decks
13%synergy
Midnight Scavengers
14%inclusion1 decks7 decks
14%synergy
Gutter Skulk
14%inclusion1 decks7 decks
14%synergy
Reaper of Sheoldred
14%inclusion1 decks7 decks
14%synergy
Plague Myr
14%inclusion1 decks7 decks
13%synergy
Blood Artist
14%inclusion1 decks7 decks
-17%synergy
Gray Merchant of Asphodel
14%inclusion1 decks7 decks
-36%synergy
Mukotai Ambusher
14%inclusion1 decks7 decks
14%synergy
Nezumi Shadow-Watcher
14%inclusion1 decks7 decks
14%synergy
Nezumi Bladeblesser
14%inclusion1 decks7 decks
14%synergy
Nezumi Shortfang
14%inclusion1 decks7 decks
14%synergy
Swamp Mosquito
14%inclusion1 decks7 decks
14%synergy
Species Specialist
14%inclusion1 decks7 decks
11%synergy
Nezumi Linkbreaker
14%inclusion1 decks7 decks
13%synergy
Ink-Eyes, Servant of Oni
14%inclusion1 decks7 decks
11%synergy
Zodiac Rat
14%inclusion1 decks7 decks
14%synergy
Sinuous Vermin
14%inclusion1 decks7 decks
14%synergy
Earsplitting Rats
14%inclusion1 decks7 decks
14%synergy
Instants
Deadly Rollick
43%inclusion3 decks7 decks
17%synergy
Fell the Profane
43%inclusion3 decks7 decks
23%synergy
Whisper of the Dross
43%inclusion3 decks7 decks
40%synergy
Grim Affliction
43%inclusion3 decks7 decks
41%synergy
Snuff Out
29%inclusion2 decks7 decks
15%synergy
Village Rites
29%inclusion2 decks7 decks
3%synergy
Consuming Corruption
29%inclusion2 decks7 decks
13%synergy
Culling the Weak
29%inclusion2 decks7 decks
10%synergy
Virulent Wound
29%inclusion2 decks7 decks
28%synergy
Tainted Strike
29%inclusion2 decks7 decks
26%synergy
Malakir Rebirth
29%inclusion2 decks7 decks
5%synergy
Corrupted Conviction
29%inclusion2 decks7 decks
16%synergy
Hagra Mauling
14%inclusion1 decks7 decks
10%synergy
Force of Despair
14%inclusion1 decks7 decks
7%synergy
Cut Down
14%inclusion1 decks7 decks
11%synergy
Go for the Throat
14%inclusion1 decks7 decks
-8%synergy
Imp's Mischief
14%inclusion1 decks7 decks
-11%synergy
Pile On
14%inclusion1 decks7 decks
13%synergy
Anoint with Affliction
14%inclusion1 decks7 decks
14%synergy
Howl from Beyond
14%inclusion1 decks7 decks
14%synergy
Deadly Dispute
14%inclusion1 decks7 decks
-13%synergy
Defile
14%inclusion1 decks7 decks
-21%synergy
Ulcerate
14%inclusion1 decks7 decks
14%synergy
Poison the Cup
14%inclusion1 decks7 decks
14%synergy
Soul Shatter
14%inclusion1 decks7 decks
3%synergy
Supernatural Stamina
14%inclusion1 decks7 decks
7%synergy
Bitter Triumph
14%inclusion1 decks7 decks
4%synergy
Tendrils of Corruption
14%inclusion1 decks7 decks
11%synergy
Darkness
14%inclusion1 decks7 decks
4%synergy
Infernal Grasp
14%inclusion1 decks7 decks
-11%synergy
Baleful Mastery
14%inclusion1 decks7 decks
7%synergy
Plumb the Forbidden
14%inclusion1 decks7 decks
10%synergy
Liliana's Triumph
14%inclusion1 decks7 decks
9%synergy
Tragic Slip
14%inclusion1 decks7 decks
-4%synergy
Dismember
14%inclusion1 decks7 decks
4%synergy
Sorceries
Decorum Dissertation
50%inclusion1 decks2 decks
44%synergy
Phyresis Outbreak
43%inclusion3 decks7 decks
41%synergy
Feed the Swarm
43%inclusion3 decks7 decks
-7%synergy
Insatiable Avarice
43%inclusion3 decks7 decks
32%synergy
Kindred Dominance
43%inclusion3 decks7 decks
38%synergy
Drown in Ichor
43%inclusion3 decks7 decks
39%synergy
Crippling Fear
43%inclusion3 decks7 decks
40%synergy
Patriarch's Bidding
29%inclusion2 decks7 decks
25%synergy
Haunting Voyage
29%inclusion2 decks7 decks
28%synergy
Agadeem's Awakening
29%inclusion2 decks7 decks
21%synergy
Blasphemous Edict
29%inclusion2 decks7 decks
13%synergy
Caress of Phyrexia
29%inclusion2 decks7 decks
28%synergy
Reanimate
29%inclusion2 decks7 decks
-12%synergy
Toxic Deluge
29%inclusion2 decks7 decks
-8%synergy
Sign in Blood
29%inclusion2 decks7 decks
-6%synergy
Damnation
29%inclusion2 decks7 decks
9%synergy
Diabolic Intent
14%inclusion1 decks7 decks
-1%synergy
Vat Emergence
14%inclusion1 decks7 decks
13%synergy
Victimize
14%inclusion1 decks7 decks
-14%synergy
Revenge of the Rats
14%inclusion1 decks7 decks
11%synergy
Torment of Hailfire
14%inclusion1 decks7 decks
-0%synergy
Bubbling Muck
14%inclusion1 decks7 decks
-1%synergy
Unearth
14%inclusion1 decks7 decks
5%synergy
Echoing Return
14%inclusion1 decks7 decks
11%synergy
Profane Command
14%inclusion1 decks7 decks
13%synergy
Night's Whisper
14%inclusion1 decks7 decks
-11%synergy
Exsanguinate
14%inclusion1 decks7 decks
-10%synergy
Syphon Mind
14%inclusion1 decks7 decks
2%synergy
Stitch Together
14%inclusion1 decks7 decks
11%synergy
Plague of Vermin
14%inclusion1 decks7 decks
12%synergy
Pact of the Serpent
14%inclusion1 decks7 decks
13%synergy
Utility Artifacts
Thrumming Stone
43%inclusion3 decks7 decks
39%synergy
Jet Medallion
43%inclusion3 decks7 decks
-19%synergy
Icon of Ancestry
29%inclusion2 decks7 decks
28%synergy
Expedition Map
29%inclusion2 decks7 decks
17%synergy
Bontu's Monument
29%inclusion2 decks7 decks
1%synergy
Whispersilk Cloak
29%inclusion2 decks7 decks
23%synergy
Locket of Yesterdays
29%inclusion2 decks7 decks
28%synergy
Herald's Horn
29%inclusion2 decks7 decks
23%synergy
Lightning Greaves
29%inclusion2 decks7 decks
-5%synergy
Soul-Guide Lantern
14%inclusion1 decks7 decks
14%synergy
Wayfarer's Bauble
14%inclusion1 decks7 decks
0%synergy
Contagion Clasp
14%inclusion1 decks7 decks
12%synergy
Soul Foundry
14%inclusion1 decks7 decks
14%synergy
Contagion Engine
14%inclusion1 decks7 decks
13%synergy
Ashnod's Altar
14%inclusion1 decks7 decks
-6%synergy
Prying Blade
14%inclusion1 decks7 decks
14%synergy
Mimic Vat
14%inclusion1 decks7 decks
13%synergy
Vanquisher's Banner
14%inclusion1 decks7 decks
11%synergy
Door of Destinies
14%inclusion1 decks7 decks
12%synergy
Mirror of the Forebears
14%inclusion1 decks7 decks
14%synergy
Hot Soup
14%inclusion1 decks7 decks
14%synergy
Swiftfoot Boots
14%inclusion1 decks7 decks
-17%synergy
Altar of Dementia
14%inclusion1 decks7 decks
9%synergy
Enchantments
Cover of Darkness
43%inclusion3 decks7 decks
40%synergy
Phyresis
29%inclusion2 decks7 decks
27%synergy
Bad Moon
29%inclusion2 decks7 decks
26%synergy
The Meathook Massacre
14%inclusion1 decks7 decks
-3%synergy
Black Market
14%inclusion1 decks7 decks
-6%synergy
Scion of Halaster
14%inclusion1 decks7 decks
14%synergy
Okiba Reckoner Raid
14%inclusion1 decks7 decks
14%synergy
Glistening Oil
14%inclusion1 decks7 decks
14%synergy
Phyrexian Reclamation
14%inclusion1 decks7 decks
5%synergy
Meathook Massacre II
14%inclusion1 decks7 decks
8%synergy
Haunted One
14%inclusion1 decks7 decks
12%synergy
Grave Pact
14%inclusion1 decks7 decks
-5%synergy
Dictate of Erebos
14%inclusion1 decks7 decks
3%synergy
Lim-Dûl's Hex
14%inclusion1 decks7 decks
14%synergy
Tribute to Horobi
14%inclusion1 decks7 decks
13%synergy
Kaya's Ghostform
14%inclusion1 decks7 decks
4%synergy
Oubliette
14%inclusion1 decks7 decks
12%synergy
Chthonian Nightmare
14%inclusion1 decks7 decks
11%synergy
Bastion of Remembrance
14%inclusion1 decks7 decks
-3%synergy
Black Market Connections
14%inclusion1 decks7 decks
-11%synergy
Oversold Cemetery
14%inclusion1 decks7 decks
9%synergy
Phyrexian Arena
14%inclusion1 decks7 decks
-25%synergy
Necrogen Communion
14%inclusion1 decks7 decks
13%synergy
Planeswalkers
Vraska, Betrayal's Sting
43%inclusion3 decks7 decks
40%synergy
Liliana of the Dark Realms
14%inclusion1 decks7 decks
1%synergy
Utility Lands
Cabal Coffers
57%inclusion4 decks7 decks
2%synergy
Mortuary Mire
43%inclusion3 decks7 decks
30%synergy
Nykthos, Shrine to Nyx
43%inclusion3 decks7 decks
13%synergy
Takenuma, Abandoned Mire
43%inclusion3 decks7 decks
27%synergy
Three Tree City
43%inclusion3 decks7 decks
38%synergy
Urborg, Tomb of Yawgmoth
43%inclusion3 decks7 decks
5%synergy
Shizo, Death's Storehouse
29%inclusion2 decks7 decks
18%synergy
Bojuka Bog
29%inclusion2 decks7 decks
-19%synergy
Cabal Stronghold
29%inclusion2 decks7 decks
-5%synergy
Phyrexian Tower
29%inclusion2 decks7 decks
2%synergy
Inkmoth Nexus
29%inclusion2 decks7 decks
28%synergy
Witch's Cottage
29%inclusion2 decks7 decks
4%synergy
Volrath's Stronghold
29%inclusion2 decks7 decks
25%synergy
Minas Morgul, Dark Fortress
29%inclusion2 decks7 decks
26%synergy
Mudflat Village
29%inclusion2 decks7 decks
26%synergy
Temple of the False God
29%inclusion2 decks7 decks
21%synergy
Rogue's Passage
29%inclusion2 decks7 decks
9%synergy
Susur Secundi, Void Altar
20%inclusion1 decks5 decks
13%synergy
Midgar, City of Mako
17%inclusion1 decks6 decks
6%synergy
Memorial to Folly
14%inclusion1 decks7 decks
11%synergy
Barren Moor
14%inclusion1 decks7 decks
5%synergy
Blast Zone
14%inclusion1 decks7 decks
12%synergy
Vesuva
14%inclusion1 decks7 decks
12%synergy
Grasping Dunes
14%inclusion1 decks7 decks
14%synergy
Crypt of Agadeem
14%inclusion1 decks7 decks
3%synergy
Mutavault
14%inclusion1 decks7 decks
14%synergy
War Room
14%inclusion1 decks7 decks
-2%synergy
Emergence Zone
14%inclusion1 decks7 decks
11%synergy
Haunted Fengraf
14%inclusion1 decks7 decks
14%synergy
The Dross Pits
14%inclusion1 decks7 decks
13%synergy
High Market
14%inclusion1 decks7 decks
6%synergy
Polluted Mire
14%inclusion1 decks7 decks
11%synergy
Deserted Temple
14%inclusion1 decks7 decks
10%synergy
Lake of the Dead
14%inclusion1 decks7 decks
9%synergy
Castle Locthwain
14%inclusion1 decks7 decks
-2%synergy
Reliquary Tower
14%inclusion1 decks7 decks
-15%synergy
Access Tunnel
14%inclusion1 decks7 decks
11%synergy
Mana Artifacts
Sol Ring
86%inclusion6 decks7 decks
0%synergy
Arcane Signet
43%inclusion3 decks7 decks
-19%synergy
Staff of Compleation
29%inclusion2 decks7 decks
27%synergy
Glistening Sphere
29%inclusion2 decks7 decks
27%synergy
Mind Stone
29%inclusion2 decks7 decks
1%synergy
The Soul Stone
25%inclusion1 decks4 decks
9%synergy
Gauntlet of Power
14%inclusion1 decks7 decks
11%synergy
Charcoal Diamond
14%inclusion1 decks7 decks
-7%synergy
Patchwork Banner
14%inclusion1 decks7 decks
10%synergy
Throne of Eldraine
14%inclusion1 decks7 decks
5%synergy
Thought Vessel
14%inclusion1 decks7 decks
-10%synergy
Lands
Swamp
100%inclusion7 decks7 decks
5%synergy
Fell the Profane
43%inclusion3 decks7 decks
23%synergy
Path of Ancestry
43%inclusion3 decks7 decks
38%synergy
Myriad Landscape
29%inclusion2 decks7 decks
5%synergy
Agadeem's Awakening
29%inclusion2 decks7 decks
21%synergy
Ash Barrens
29%inclusion2 decks7 decks
27%synergy
Cavern of Souls
29%inclusion2 decks7 decks
22%synergy
Malakir Rebirth
29%inclusion2 decks7 decks
5%synergy
Hagra Mauling
14%inclusion1 decks7 decks
10%synergy
Terramorphic Expanse
14%inclusion1 decks7 decks
11%synergy
Urza's Cave
14%inclusion1 decks7 decks
6%synergy
Warped Landscape
14%inclusion1 decks7 decks
14%synergy
Mirrex
14%inclusion1 decks7 decks
14%synergy
Boggart Trawler
14%inclusion1 decks7 decks
5%synergy
Evolving Wilds
14%inclusion1 decks7 decks
10%synergy
Crystal Grotto
14%inclusion1 decks7 decks
14%synergy
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