Karumonix, the Rat King (Commander) - Expensive Upgraded

Karumonix, the Rat King
Rank #401
34decks
As CommanderAs CardAverage DeckDecks
Bracket
All12345
Budget
Any$$$$
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
94%inclusion32 decks34 decks
91%synergy
Piper of the Swarm
91%inclusion31 decks34 decks
84%synergy
Ashcoat of the Shadow Swarm
82%inclusion28 decks34 decks
79%synergy
Pack Rat
79%inclusion27 decks34 decks
74%synergy
Swarmyard
76%inclusion26 decks34 decks
71%synergy
Ichor Rats
71%inclusion24 decks34 decks
68%synergy
Ogre Slumlord
76%inclusion26 decks34 decks
67%synergy
Blightbelly Rat
68%inclusion23 decks34 decks
64%synergy
Rat Colony
68%inclusion23 decks34 decks
62%synergy
Lord Skitter, Sewer King
68%inclusion23 decks34 decks
60%synergy
Top Cards
Dark Ritual
85%inclusion29 decks34 decks
18%synergy
Jet Medallion
79%inclusion27 decks34 decks
17%synergy
Bontu's Monument
68%inclusion23 decks34 decks
40%synergy
Ratcatcher
56%inclusion19 decks34 decks
53%synergy
Cover of Darkness
53%inclusion18 decks34 decks
50%synergy
Phyrexian Arena
53%inclusion18 decks34 decks
14%synergy
Infectious Inquiry
50%inclusion17 decks34 decks
47%synergy
Kindred Dominance
50%inclusion17 decks34 decks
45%synergy
Crypt Rats
50%inclusion17 decks34 decks
46%synergy
Deadly Rollick
47%inclusion16 decks34 decks
22%synergy
Game Changers
Demonic Tutor
71%inclusion24 decks34 decks
43%synergy
Vampiric Tutor
62%inclusion21 decks34 decks
41%synergy
Bolas's Citadel
35%inclusion12 decks34 decks
7%synergy
Imperial Seal
26%inclusion9 decks34 decks
20%synergy
The One Ring
18%inclusion6 decks34 decks
8%synergy
Ancient Tomb
15%inclusion5 decks34 decks
3%synergy
Necropotence
12%inclusion4 decks34 decks
-3%synergy
Field of the Dead
8.8%inclusion3 decks34 decks
8%synergy
Opposition Agent
5.9%inclusion2 decks34 decks
-4%synergy
Mana Vault
5.9%inclusion2 decks34 decks
-1%synergy
Creatures
Tangled Colony
47%inclusion16 decks34 decks
44%synergy
Septic Rats
44%inclusion15 decks34 decks
42%synergy
Gnat Miser
44%inclusion15 decks34 decks
41%synergy
Nashi, Moon Sage's Scion
41%inclusion14 decks34 decks
38%synergy
Persistent Marshstalker
38%inclusion13 decks34 decks
35%synergy
Typhoid Rats
38%inclusion13 decks34 decks
35%synergy
Valley Rotcaller
35%inclusion12 decks34 decks
33%synergy
Crypt Ghast
35%inclusion12 decks34 decks
-12%synergy
Lord Skitter's Butcher
32%inclusion11 decks34 decks
29%synergy
Species Specialist
32%inclusion11 decks34 decks
29%synergy
Rancid Rats
32%inclusion11 decks34 decks
30%synergy
Ayara, First of Locthwain
29%inclusion10 decks34 decks
4%synergy
Locust Miser
29%inclusion10 decks34 decks
28%synergy
Wave of Rats
29%inclusion10 decks34 decks
28%synergy
Rat King, Verminister
29%inclusion6 decks21 decks
25%synergy
Ink-Eyes, Servant of Oni
26%inclusion9 decks34 decks
23%synergy
Swarm of Rats
26%inclusion9 decks34 decks
24%synergy
Stronghold Rats
26%inclusion9 decks34 decks
23%synergy
Voracious Vermin
24%inclusion8 decks34 decks
21%synergy
Undercity Dire Rat
21%inclusion6 decks29 decks
19%synergy
Chittering Witch
21%inclusion7 decks34 decks
16%synergy
Nezumi Informant
21%inclusion7 decks34 decks
14%synergy
Nezumi Prowler
21%inclusion7 decks34 decks
19%synergy
Burglar Rat
18%inclusion6 decks34 decks
7%synergy
Throat Slitter
18%inclusion6 decks34 decks
16%synergy
Yawgmoth, Thran Physician
18%inclusion6 decks34 decks
8%synergy
Okiba-Gang Shinobi
18%inclusion6 decks34 decks
17%synergy
Relentless Rats
15%inclusion5 decks34 decks
13%synergy
Roaming Throne
15%inclusion5 decks34 decks
12%synergy
Gray Merchant of Asphodel
15%inclusion5 decks34 decks
-36%synergy
Adaptive Automaton
15%inclusion5 decks34 decks
14%synergy
Chittering Skitterling
15%inclusion5 decks34 decks
14%synergy
Twisted Sewer-Witch
15%inclusion5 decks34 decks
13%synergy
Changeling Outcast
15%inclusion5 decks34 decks
10%synergy
Pestilence Rats
15%inclusion5 decks34 decks
13%synergy
Engine Rat
13%inclusion4 decks32 decks
11%synergy
Rat King, Pale Piper
13%inclusion2 decks16 decks
9%synergy
Refurbished Familiar
12%inclusion4 decks34 decks
10%synergy
Nezumi Graverobber
12%inclusion4 decks34 decks
10%synergy
Rotting Rats
12%inclusion4 decks34 decks
9%synergy
Nezumi Shortfang
12%inclusion4 decks34 decks
11%synergy
Zodiac Rat
12%inclusion4 decks34 decks
12%synergy
Zulaport Cutthroat
12%inclusion4 decks34 decks
-11%synergy
Nezumi Cutthroat
12%inclusion4 decks34 decks
11%synergy
Drainpipe Vermin
12%inclusion4 decks34 decks
10%synergy
Nezumi Bone-Reader
12%inclusion4 decks34 decks
11%synergy
Carrion Rats
8.8%inclusion3 decks34 decks
9%synergy
Metallic Mimic
8.8%inclusion3 decks34 decks
8%synergy
Ravenous Rats
8.8%inclusion3 decks34 decks
7%synergy
Ruthless Radrat
8.8%inclusion3 decks34 decks
8%synergy
Instants
Vraska's Fall
47%inclusion16 decks34 decks
44%synergy
Village Rites
35%inclusion12 decks34 decks
10%synergy
Culling the Weak
35%inclusion12 decks34 decks
18%synergy
Go for the Throat
32%inclusion11 decks34 decks
10%synergy
Cabal Ritual
29%inclusion10 decks34 decks
11%synergy
Withering Torment
24%inclusion8 decks33 decks
-7%synergy
Defile
24%inclusion8 decks34 decks
-12%synergy
Imp's Mischief
21%inclusion7 decks34 decks
-5%synergy
Whisper of the Dross
18%inclusion6 decks34 decks
15%synergy
Deadly Dispute
18%inclusion6 decks34 decks
-9%synergy
Infernal Grasp
18%inclusion6 decks34 decks
-8%synergy
Fell the Profane
15%inclusion5 decks34 decks
-5%synergy
Malakir Rebirth
15%inclusion5 decks34 decks
-9%synergy
Corrupted Conviction
15%inclusion5 decks34 decks
2%synergy
Sudden Spoiling
15%inclusion5 decks34 decks
6%synergy
Anoint with Affliction
12%inclusion4 decks34 decks
11%synergy
Grim Affliction
12%inclusion4 decks34 decks
10%synergy
Tainted Strike
12%inclusion4 decks34 decks
9%synergy
Tragic Slip
12%inclusion4 decks34 decks
-7%synergy
Hero's Downfall
8.8%inclusion3 decks34 decks
2%synergy
Sheoldred's Edict
8.8%inclusion3 decks34 decks
-6%synergy
Snuff Out
8.8%inclusion3 decks34 decks
-5%synergy
Rat Out
8.8%inclusion3 decks34 decks
7%synergy
Doom Blade
8.8%inclusion3 decks34 decks
2%synergy
Darkness
8.8%inclusion3 decks34 decks
-1%synergy
Songs of the Damned
5.9%inclusion2 decks34 decks
0%synergy
Virulent Wound
5.9%inclusion2 decks34 decks
5%synergy
Raise the Draugr
5.9%inclusion2 decks34 decks
5%synergy
Murder
5.9%inclusion2 decks34 decks
-4%synergy
Baleful Mastery
5.9%inclusion2 decks34 decks
-2%synergy
Terror
5.9%inclusion2 decks34 decks
5%synergy
Liliana's Triumph
5.9%inclusion2 decks34 decks
0%synergy
Vona's Hunger
5.9%inclusion2 decks34 decks
1%synergy
Dismember
5.9%inclusion2 decks34 decks
-5%synergy
Sorceries
Drown in Ichor
44%inclusion15 decks34 decks
41%synergy
Diabolic Intent
38%inclusion13 decks34 decks
23%synergy
Phyresis Outbreak
38%inclusion13 decks34 decks
37%synergy
Revenge of the Rats
33%inclusion11 decks33 decks
30%synergy
Toxic Deluge
32%inclusion11 decks34 decks
-4%synergy
Feed the Swarm
29%inclusion10 decks34 decks
-21%synergy
Bloodline Bidding
27%inclusion6 decks22 decks
23%synergy
Patriarch's Bidding
24%inclusion8 decks34 decks
20%synergy
Swarmyard Massacre
24%inclusion8 decks34 decks
21%synergy
Exsanguinate
24%inclusion8 decks34 decks
-1%synergy
Grim Tutor
24%inclusion8 decks34 decks
12%synergy
Echoing Return
21%inclusion7 decks34 decks
18%synergy
Sign in Blood
18%inclusion6 decks34 decks
-17%synergy
Damnation
18%inclusion6 decks34 decks
-2%synergy
Diabolic Tutor
15%inclusion5 decks34 decks
1%synergy
Bubbling Muck
15%inclusion5 decks34 decks
-1%synergy
Night's Whisper
15%inclusion5 decks34 decks
-10%synergy
Reanimate
15%inclusion5 decks34 decks
-26%synergy
Torment of Hailfire
12%inclusion4 decks34 decks
-3%synergy
Rise of the Dark Realms
12%inclusion4 decks34 decks
-1%synergy
Plague of Vermin
12%inclusion4 decks34 decks
9%synergy
Vat Emergence
8.8%inclusion3 decks34 decks
8%synergy
Victimize
8.8%inclusion3 decks34 decks
-19%synergy
Agadeem's Awakening
8.8%inclusion3 decks34 decks
1%synergy
Disentomb
8.8%inclusion3 decks34 decks
8%synergy
Shredder's Technique
6.3%inclusion1 decks16 decks
3%synergy
Duress
5.9%inclusion2 decks34 decks
-1%synergy
Read the Bones
5.9%inclusion2 decks34 decks
-10%synergy
Crippling Fear
5.9%inclusion2 decks34 decks
3%synergy
Thoughtseize
5.9%inclusion2 decks34 decks
1%synergy
Utility Artifacts
Herald's Horn
44%inclusion15 decks34 decks
39%synergy
Skullclamp
41%inclusion14 decks34 decks
19%synergy
Thrumming Stone
41%inclusion14 decks34 decks
37%synergy
Lightning Greaves
29%inclusion10 decks34 decks
-4%synergy
Vanquisher's Banner
24%inclusion8 decks34 decks
20%synergy
Door of Destinies
24%inclusion8 decks34 decks
21%synergy
Chronicle of Victory
23%inclusion5 decks22 decks
20%synergy
The Darkness Crystal
21%inclusion6 decks29 decks
1%synergy
Ashnod's Altar
21%inclusion7 decks34 decks
1%synergy
Thornbite Staff
21%inclusion7 decks34 decks
18%synergy
Sensei's Divining Top
18%inclusion6 decks34 decks
10%synergy
Coat of Arms
18%inclusion6 decks34 decks
15%synergy
Sword of Truth and Justice
18%inclusion6 decks34 decks
17%synergy
Phyrexian Altar
18%inclusion6 decks34 decks
4%synergy
Banner of Kinship
15%inclusion5 decks33 decks
13%synergy
Whip of Erebos
15%inclusion5 decks34 decks
4%synergy
Expedition Map
15%inclusion5 decks34 decks
3%synergy
Urza's Incubator
15%inclusion5 decks34 decks
13%synergy
Eldrazi Monument
12%inclusion4 decks34 decks
10%synergy
Swiftfoot Boots
12%inclusion4 decks34 decks
-20%synergy
Gathering Stone
9.1%inclusion2 decks22 decks
8%synergy
Contagion Clasp
8.8%inclusion3 decks34 decks
7%synergy
Contagion Engine
8.8%inclusion3 decks34 decks
7%synergy
Helm of the Host
8.8%inclusion3 decks34 decks
7%synergy
Sword of Hearth and Home
8.8%inclusion3 decks34 decks
8%synergy
Akroma's Memorial
8.8%inclusion3 decks34 decks
8%synergy
Whispersilk Cloak
8.8%inclusion3 decks34 decks
3%synergy
Commander's Plate
8.8%inclusion3 decks34 decks
3%synergy
Mirror Box
5.9%inclusion2 decks34 decks
5%synergy
Scroll Rack
5.9%inclusion2 decks34 decks
5%synergy
Recon Craft Theta
5.9%inclusion2 decks34 decks
6%synergy
Altar of the Brood
5.9%inclusion2 decks34 decks
4%synergy
Mindcrank
5.9%inclusion2 decks34 decks
1%synergy
Grafted Exoskeleton
5.9%inclusion2 decks34 decks
5%synergy
Enchantments
Grave Pact
44%inclusion15 decks34 decks
25%synergy
Black Market
26%inclusion9 decks34 decks
6%synergy
Black Market Connections
26%inclusion9 decks34 decks
2%synergy
Oversold Cemetery
24%inclusion8 decks34 decks
18%synergy
Haunted One
21%inclusion7 decks34 decks
18%synergy
Necrogen Communion
21%inclusion7 decks34 decks
19%synergy
The Meathook Massacre
15%inclusion5 decks34 decks
-3%synergy
Intimidation
12%inclusion4 decks34 decks
11%synergy
Bastion of Remembrance
12%inclusion4 decks34 decks
-5%synergy
Vampiric Rites
8.8%inclusion3 decks34 decks
3%synergy
Sanguine Bond
8.8%inclusion3 decks34 decks
-3%synergy
Dictate of Erebos
8.8%inclusion3 decks34 decks
-2%synergy
Exquisite Blood
8.8%inclusion3 decks34 decks
-4%synergy
Phyresis
8.8%inclusion3 decks34 decks
7%synergy
Painful Quandary
8.8%inclusion3 decks34 decks
-1%synergy
Lord Skitter's Blessing
8.8%inclusion3 decks34 decks
8%synergy
Dark Prophecy
8.8%inclusion3 decks34 decks
5%synergy
Sothera, the Supervoid
7.1%inclusion2 decks28 decks
4%synergy
Phyrexian Reclamation
5.9%inclusion2 decks34 decks
-4%synergy
Conspiracy
5.9%inclusion2 decks34 decks
5%synergy
Tribute to Horobi
5.9%inclusion2 decks34 decks
5%synergy
No Mercy
5.9%inclusion2 decks34 decks
-1%synergy
Oubliette
5.9%inclusion2 decks34 decks
3%synergy
Bloodchief Ascension
5.9%inclusion2 decks34 decks
-3%synergy
Bad Moon
5.9%inclusion2 decks34 decks
3%synergy
Planeswalkers
Vraska, Betrayal's Sting
41%inclusion14 decks34 decks
39%synergy
Liliana of the Dark Realms
21%inclusion7 decks34 decks
7%synergy
Utility Lands
Cabal Coffers
85%inclusion29 decks34 decks
31%synergy
Urborg, Tomb of Yawgmoth
76%inclusion26 decks34 decks
39%synergy
Phyrexian Tower
56%inclusion19 decks34 decks
30%synergy
Nykthos, Shrine to Nyx
53%inclusion18 decks34 decks
23%synergy
Three Tree City
53%inclusion18 decks34 decks
48%synergy
Bojuka Bog
47%inclusion16 decks34 decks
0%synergy
Cabal Stronghold
44%inclusion15 decks34 decks
10%synergy
Castle Locthwain
44%inclusion15 decks34 decks
27%synergy
Shizo, Death's Storehouse
38%inclusion13 decks34 decks
28%synergy
Karn's Bastion
38%inclusion13 decks34 decks
35%synergy
Witch's Cottage
32%inclusion11 decks34 decks
8%synergy
Reliquary Tower
32%inclusion11 decks34 decks
3%synergy
Mudflat Village
29%inclusion10 decks34 decks
27%synergy
Rogue's Passage
26%inclusion9 decks34 decks
7%synergy
Crypt of Agadeem
24%inclusion8 decks34 decks
12%synergy
War Room
24%inclusion8 decks34 decks
8%synergy
Secret Tunnel
23%inclusion6 decks26 decks
22%synergy
Mortuary Mire
21%inclusion7 decks34 decks
8%synergy
Volrath's Stronghold
21%inclusion7 decks34 decks
17%synergy
Minas Morgul, Dark Fortress
21%inclusion7 decks34 decks
18%synergy
Takenuma, Abandoned Mire
21%inclusion7 decks34 decks
5%synergy
Lake of the Dead
18%inclusion6 decks34 decks
12%synergy
The Black Gate
12%inclusion4 decks34 decks
8%synergy
Urza's Saga
12%inclusion4 decks34 decks
4%synergy
Vesuva
8.8%inclusion3 decks34 decks
6%synergy
Spymaster's Vault
8.8%inclusion3 decks34 decks
-1%synergy
Command Beacon
8.8%inclusion3 decks34 decks
1%synergy
Thespian's Stage
8.8%inclusion3 decks34 decks
4%synergy
Temple of the False God
8.8%inclusion3 decks34 decks
1%synergy
Access Tunnel
8.8%inclusion3 decks34 decks
6%synergy
Barren Moor
5.9%inclusion2 decks34 decks
-4%synergy
Inkmoth Nexus
5.9%inclusion2 decks34 decks
5%synergy
Mutavault
5.9%inclusion2 decks34 decks
5%synergy
Mana Artifacts
Sol Ring
100%inclusion34 decks34 decks
15%synergy
Arcane Signet
50%inclusion17 decks34 decks
-11%synergy
Glistening Sphere
35%inclusion12 decks34 decks
34%synergy
The Soul Stone
33%inclusion9 decks27 decks
18%synergy
Staff of Compleation
26%inclusion9 decks34 decks
25%synergy
Patchwork Banner
21%inclusion7 decks34 decks
16%synergy
Throne of Eldraine
15%inclusion5 decks34 decks
5%synergy
Mind Stone
15%inclusion5 decks34 decks
-13%synergy
Heraldic Banner
12%inclusion4 decks34 decks
7%synergy
Nyx Lotus
12%inclusion4 decks34 decks
6%synergy
Gauntlet of Power
8.8%inclusion3 decks34 decks
6%synergy
Lotus Petal
8.8%inclusion3 decks34 decks
1%synergy
Mox Amber
8.8%inclusion3 decks34 decks
5%synergy
Fellwar Stone
8.8%inclusion3 decks34 decks
-5%synergy
Worn Powerstone
8.8%inclusion3 decks34 decks
5%synergy
Phyrexian Atlas
8.8%inclusion3 decks34 decks
8%synergy
Mox Opal
8.8%inclusion3 decks34 decks
5%synergy
The Eternity Elevator
7.4%inclusion2 decks27 decks
7%synergy
Caged Sun
5.9%inclusion2 decks34 decks
-5%synergy
Thought Vessel
5.9%inclusion2 decks34 decks
-19%synergy
Springleaf Drum
5.9%inclusion2 decks34 decks
4%synergy
Sceptre of Eternal Glory
5.9%inclusion2 decks34 decks
-2%synergy
Chrome Mox
5.9%inclusion2 decks34 decks
-0%synergy
Lands
Swamp
94%inclusion32 decks34 decks
-1%synergy
Cavern of Souls
65%inclusion22 decks34 decks
58%synergy
Path of Ancestry
44%inclusion15 decks34 decks
39%synergy
Fell the Profane
15%inclusion5 decks34 decks
-5%synergy
Myriad Landscape
15%inclusion5 decks34 decks
-10%synergy
Malakir Rebirth
15%inclusion5 decks34 decks
-9%synergy
Command Tower
12%inclusion4 decks34 decks
6%synergy
Urza's Cave
12%inclusion4 decks34 decks
3%synergy
Snow-Covered Swamp
12%inclusion4 decks34 decks
5%synergy
Polluted Delta
12%inclusion4 decks34 decks
8%synergy
Abundant Countryside
9.1%inclusion2 decks22 decks
9%synergy
Prismatic Vista
8.8%inclusion3 decks34 decks
6%synergy
Agadeem's Awakening
8.8%inclusion3 decks34 decks
1%synergy
Evolving Wilds
8.8%inclusion3 decks34 decks
5%synergy
Marsh Flats
8.8%inclusion3 decks34 decks
5%synergy
Bloodstained Mire
8.8%inclusion3 decks34 decks
5%synergy
Fabled Passage
5.9%inclusion2 decks34 decks
4%synergy
Gemstone Caverns
5.9%inclusion2 decks34 decks
1%synergy
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