Karumonix, the Rat King (Commander) - Expensive Upgraded

Karumonix, the Rat King
Rank #382
29decks
As CommanderAs CardAverage DeckDecks
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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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Utility Lands
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Marrow-Gnawer
86%inclusion25 decks29 decks
83%synergy
Ashcoat of the Shadow Swarm
76%inclusion22 decks29 decks
72%synergy
Piper of the Swarm
79%inclusion23 decks29 decks
72%synergy
Swarmyard
72%inclusion21 decks29 decks
67%synergy
Pack Rat
72%inclusion21 decks29 decks
66%synergy
Ichor Rats
66%inclusion19 decks29 decks
63%synergy
Ogre Slumlord
72%inclusion21 decks29 decks
62%synergy
Rat Colony
62%inclusion18 decks29 decks
56%synergy
Blightbelly Rat
59%inclusion17 decks29 decks
55%synergy
Lord Skitter, Sewer King
62%inclusion18 decks29 decks
54%synergy
Top Cards
Dark Ritual
86%inclusion25 decks29 decks
20%synergy
Jet Medallion
76%inclusion22 decks29 decks
14%synergy
Bontu's Monument
69%inclusion20 decks29 decks
41%synergy
Deadly Rollick
59%inclusion17 decks29 decks
34%synergy
Skullclamp
52%inclusion15 decks29 decks
30%synergy
Thrumming Stone
52%inclusion15 decks29 decks
48%synergy
Phyrexian Arena
52%inclusion15 decks29 decks
12%synergy
Ratcatcher
48%inclusion14 decks29 decks
45%synergy
Herald's Horn
48%inclusion14 decks29 decks
43%synergy
Diabolic Intent
45%inclusion13 decks29 decks
30%synergy
Game Changers
Demonic Tutor
69%inclusion20 decks29 decks
42%synergy
Vampiric Tutor
62%inclusion18 decks29 decks
41%synergy
Bolas's Citadel
38%inclusion11 decks29 decks
9%synergy
Imperial Seal
24%inclusion7 decks29 decks
17%synergy
The One Ring
21%inclusion6 decks29 decks
11%synergy
Ancient Tomb
10%inclusion3 decks29 decks
-1%synergy
Opposition Agent
6.9%inclusion2 decks29 decks
-3%synergy
Mana Vault
6.9%inclusion2 decks29 decks
0%synergy
Chrome Mox
6.9%inclusion2 decks29 decks
1%synergy
Creatures
Crypt Rats
41%inclusion12 decks29 decks
37%synergy
Tangled Colony
41%inclusion12 decks29 decks
38%synergy
Nashi, Moon Sage's Scion
38%inclusion11 decks29 decks
34%synergy
Crypt Ghast
34%inclusion10 decks29 decks
-13%synergy
Gnat Miser
34%inclusion10 decks29 decks
32%synergy
Ayara, First of Locthwain
31%inclusion9 decks29 decks
5%synergy
Ink-Eyes, Servant of Oni
31%inclusion9 decks29 decks
28%synergy
Persistent Marshstalker
31%inclusion9 decks29 decks
28%synergy
Typhoid Rats
31%inclusion9 decks29 decks
27%synergy
Septic Rats
31%inclusion9 decks29 decks
29%synergy
Wave of Rats
31%inclusion9 decks29 decks
29%synergy
Lord Skitter's Butcher
28%inclusion8 decks29 decks
24%synergy
Species Specialist
28%inclusion8 decks29 decks
24%synergy
Rancid Rats
28%inclusion8 decks29 decks
25%synergy
Relentless Rats
24%inclusion7 decks29 decks
22%synergy
Swarm of Rats
24%inclusion7 decks29 decks
22%synergy
Valley Rotcaller
24%inclusion7 decks29 decks
21%synergy
Nezumi Prowler
24%inclusion7 decks29 decks
23%synergy
Undercity Dire Rat
21%inclusion5 decks24 decks
19%synergy
Voracious Vermin
21%inclusion6 decks29 decks
18%synergy
Locust Miser
21%inclusion6 decks29 decks
19%synergy
Stronghold Rats
21%inclusion6 decks29 decks
17%synergy
Chittering Witch
21%inclusion6 decks29 decks
16%synergy
Nezumi Informant
21%inclusion6 decks29 decks
14%synergy
Rat King, Verminister
20%inclusion3 decks15 decks
17%synergy
Throat Slitter
17%inclusion5 decks29 decks
15%synergy
Gray Merchant of Asphodel
17%inclusion5 decks29 decks
-34%synergy
Yawgmoth, Thran Physician
17%inclusion5 decks29 decks
7%synergy
Changeling Outcast
17%inclusion5 decks29 decks
12%synergy
Okiba-Gang Shinobi
17%inclusion5 decks29 decks
16%synergy
Nezumi Graverobber
14%inclusion4 decks29 decks
12%synergy
Burglar Rat
14%inclusion4 decks29 decks
3%synergy
Roaming Throne
14%inclusion4 decks29 decks
11%synergy
Metallic Mimic
14%inclusion4 decks29 decks
13%synergy
Nezumi Bone-Reader
14%inclusion4 decks29 decks
13%synergy
Engine Rat
11%inclusion3 decks27 decks
9%synergy
Refurbished Familiar
10%inclusion3 decks29 decks
8%synergy
Rotting Rats
10%inclusion3 decks29 decks
7%synergy
Carrion Rats
10%inclusion3 decks29 decks
10%synergy
Ruthless Radrat
10%inclusion3 decks29 decks
10%synergy
Nezumi Shortfang
10%inclusion3 decks29 decks
10%synergy
Adaptive Automaton
10%inclusion3 decks29 decks
9%synergy
Graf Rats
10%inclusion3 decks29 decks
10%synergy
Chittering Skitterling
10%inclusion3 decks29 decks
9%synergy
Twisted Sewer-Witch
10%inclusion3 decks29 decks
9%synergy
Pestilence Rats
10%inclusion3 decks29 decks
8%synergy
Nezumi Cutthroat
10%inclusion3 decks29 decks
10%synergy
Drainpipe Vermin
10%inclusion3 decks29 decks
9%synergy
Old Flitterfang
10%inclusion3 decks29 decks
9%synergy
Splinter, Hamato Yoshi
10%inclusion1 decks10 decks
10%synergy
Instants
Go for the Throat
34%inclusion10 decks29 decks
12%synergy
Vraska's Fall
34%inclusion10 decks29 decks
31%synergy
Culling the Weak
28%inclusion8 decks29 decks
11%synergy
Village Rites
24%inclusion7 decks29 decks
-1%synergy
Cabal Ritual
24%inclusion7 decks29 decks
6%synergy
Withering Torment
21%inclusion6 decks28 decks
-10%synergy
Defile
21%inclusion6 decks29 decks
-16%synergy
Infernal Grasp
21%inclusion6 decks29 decks
-4%synergy
Imp's Mischief
17%inclusion5 decks29 decks
-7%synergy
Fell the Profane
14%inclusion4 decks29 decks
-5%synergy
Deadly Dispute
14%inclusion4 decks29 decks
-12%synergy
Tragic Slip
14%inclusion4 decks29 decks
-6%synergy
Tainted Strike
14%inclusion4 decks29 decks
11%synergy
Snuff Out
10%inclusion3 decks29 decks
-3%synergy
Doom Blade
10%inclusion3 decks29 decks
3%synergy
Anoint with Affliction
10%inclusion3 decks29 decks
10%synergy
Baleful Mastery
10%inclusion3 decks29 decks
2%synergy
Corrupted Conviction
10%inclusion3 decks29 decks
-2%synergy
Sudden Spoiling
10%inclusion3 decks29 decks
2%synergy
Hero's Downfall
6.9%inclusion2 decks29 decks
0%synergy
Force of Despair
6.9%inclusion2 decks29 decks
-1%synergy
Sheoldred's Edict
6.9%inclusion2 decks29 decks
-8%synergy
Whisper of the Dross
6.9%inclusion2 decks29 decks
4%synergy
Darkness
6.9%inclusion2 decks29 decks
-3%synergy
Malakir Rebirth
6.9%inclusion2 decks29 decks
-16%synergy
Dismember
6.9%inclusion2 decks29 decks
-3%synergy
Sorceries
Kindred Dominance
45%inclusion13 decks29 decks
40%synergy
Patriarch's Bidding
41%inclusion12 decks29 decks
37%synergy
Phyresis Outbreak
38%inclusion11 decks29 decks
36%synergy
Toxic Deluge
38%inclusion11 decks29 decks
1%synergy
Revenge of the Rats
36%inclusion10 decks28 decks
33%synergy
Infectious Inquiry
34%inclusion10 decks29 decks
32%synergy
Feed the Swarm
31%inclusion9 decks29 decks
-19%synergy
Grim Tutor
31%inclusion9 decks29 decks
19%synergy
Echoing Return
28%inclusion8 decks29 decks
24%synergy
Drown in Ichor
28%inclusion8 decks29 decks
24%synergy
Bloodline Bidding
25%inclusion4 decks16 decks
20%synergy
Swarmyard Massacre
24%inclusion7 decks29 decks
22%synergy
Damnation
24%inclusion7 decks29 decks
4%synergy
Diabolic Tutor
21%inclusion6 decks29 decks
6%synergy
Plague of Vermin
21%inclusion6 decks29 decks
18%synergy
Night's Whisper
17%inclusion5 decks29 decks
-7%synergy
Reanimate
17%inclusion5 decks29 decks
-23%synergy
Bubbling Muck
14%inclusion4 decks29 decks
-2%synergy
Living Death
14%inclusion4 decks29 decks
4%synergy
Torment of Hailfire
10%inclusion3 decks29 decks
-5%synergy
Haunting Voyage
10%inclusion3 decks29 decks
9%synergy
Victimize
10%inclusion3 decks29 decks
-17%synergy
Scheming Symmetry
10%inclusion3 decks29 decks
6%synergy
Sign in Blood
10%inclusion3 decks29 decks
-25%synergy
Exsanguinate
10%inclusion3 decks29 decks
-14%synergy
Shredder's Technique
10%inclusion1 decks10 decks
6%synergy
Blasphemous Edict
7.1%inclusion2 decks28 decks
-9%synergy
Profane Tutor
6.9%inclusion2 decks29 decks
3%synergy
Duress
6.9%inclusion2 decks29 decks
0%synergy
Mutilate
6.9%inclusion2 decks29 decks
-10%synergy
Agadeem's Awakening
6.9%inclusion2 decks29 decks
0%synergy
Insatiable Avarice
6.9%inclusion2 decks29 decks
-5%synergy
Mastermind's Acquisition
6.9%inclusion2 decks29 decks
5%synergy
Rise of the Dark Realms
6.9%inclusion2 decks29 decks
-6%synergy
Pact of the Serpent
6.9%inclusion2 decks29 decks
5%synergy
Thoughtseize
6.9%inclusion2 decks29 decks
2%synergy
Behold the Sinister Six!
5.0%inclusion1 decks20 decks
4%synergy
Utility Artifacts
Vanquisher's Banner
28%inclusion8 decks29 decks
24%synergy
Lightning Greaves
28%inclusion8 decks29 decks
-6%synergy
Chronicle of Victory
25%inclusion4 decks16 decks
22%synergy
Sensei's Divining Top
24%inclusion7 decks29 decks
16%synergy
The Darkness Crystal
21%inclusion5 decks24 decks
1%synergy
Ashnod's Altar
17%inclusion5 decks29 decks
-3%synergy
Phyrexian Altar
17%inclusion5 decks29 decks
4%synergy
Door of Destinies
17%inclusion5 decks29 decks
15%synergy
Coat of Arms
17%inclusion5 decks29 decks
15%synergy
Sword of Truth and Justice
14%inclusion4 decks29 decks
13%synergy
Whip of Erebos
14%inclusion4 decks29 decks
3%synergy
Swiftfoot Boots
14%inclusion4 decks29 decks
-18%synergy
Thornbite Staff
14%inclusion4 decks29 decks
11%synergy
Eldrazi Monument
14%inclusion4 decks29 decks
12%synergy
Banner of Kinship
11%inclusion3 decks28 decks
9%synergy
Urza's Incubator
10%inclusion3 decks29 decks
8%synergy
Expedition Map
10%inclusion3 decks29 decks
-1%synergy
Contagion Clasp
6.9%inclusion2 decks29 decks
5%synergy
Mirror Box
6.9%inclusion2 decks29 decks
6%synergy
Contagion Engine
6.9%inclusion2 decks29 decks
5%synergy
Akroma's Memorial
6.9%inclusion2 decks29 decks
6%synergy
Wishclaw Talisman
6.9%inclusion2 decks29 decks
0%synergy
Helm of the Host
6.9%inclusion2 decks29 decks
6%synergy
Whispersilk Cloak
6.9%inclusion2 decks29 decks
1%synergy
Aetherflux Reservoir
6.9%inclusion2 decks29 decks
-3%synergy
Commander's Plate
6.9%inclusion2 decks29 decks
1%synergy
Altar of the Brood
6.9%inclusion2 decks29 decks
5%synergy
Obelisk of Urd
6.9%inclusion2 decks29 decks
6%synergy
Grafted Exoskeleton
6.9%inclusion2 decks29 decks
6%synergy
Gathering Stone
6.3%inclusion1 decks16 decks
5%synergy
Enchantments
Cover of Darkness
45%inclusion13 decks29 decks
42%synergy
Grave Pact
41%inclusion12 decks29 decks
22%synergy
Haunted One
28%inclusion8 decks29 decks
25%synergy
Black Market
24%inclusion7 decks29 decks
3%synergy
Black Market Connections
24%inclusion7 decks29 decks
0%synergy
Oversold Cemetery
21%inclusion6 decks29 decks
15%synergy
The Meathook Massacre
17%inclusion5 decks29 decks
0%synergy
Dictate of Erebos
14%inclusion4 decks29 decks
3%synergy
Exquisite Blood
10%inclusion3 decks29 decks
-3%synergy
Necrogen Communion
10%inclusion3 decks29 decks
9%synergy
Phyrexian Reclamation
6.9%inclusion2 decks29 decks
-3%synergy
Sanguine Bond
6.9%inclusion2 decks29 decks
-5%synergy
No Mercy
6.9%inclusion2 decks29 decks
0%synergy
Intimidation
6.9%inclusion2 decks29 decks
6%synergy
Oubliette
6.9%inclusion2 decks29 decks
4%synergy
Bastion of Remembrance
6.9%inclusion2 decks29 decks
-10%synergy
Dark Prophecy
6.9%inclusion2 decks29 decks
3%synergy
Planeswalkers
Vraska, Betrayal's Sting
31%inclusion9 decks29 decks
28%synergy
Liliana of the Dark Realms
28%inclusion8 decks29 decks
14%synergy
Utility Lands
Cabal Coffers
86%inclusion25 decks29 decks
31%synergy
Urborg, Tomb of Yawgmoth
79%inclusion23 decks29 decks
42%synergy
Nykthos, Shrine to Nyx
55%inclusion16 decks29 decks
25%synergy
Three Tree City
52%inclusion15 decks29 decks
47%synergy
Cabal Stronghold
48%inclusion14 decks29 decks
14%synergy
Phyrexian Tower
48%inclusion14 decks29 decks
23%synergy
Castle Locthwain
48%inclusion14 decks29 decks
31%synergy
Bojuka Bog
41%inclusion12 decks29 decks
-6%synergy
Mudflat Village
34%inclusion10 decks29 decks
32%synergy
Shizo, Death's Storehouse
31%inclusion9 decks29 decks
21%synergy
War Room
31%inclusion9 decks29 decks
15%synergy
Karn's Bastion
31%inclusion9 decks29 decks
27%synergy
Reliquary Tower
31%inclusion9 decks29 decks
1%synergy
Witch's Cottage
28%inclusion8 decks29 decks
3%synergy
Rogue's Passage
28%inclusion8 decks29 decks
9%synergy
Secret Tunnel
22%inclusion4 decks18 decks
21%synergy
Mortuary Mire
21%inclusion6 decks29 decks
8%synergy
Crypt of Agadeem
21%inclusion6 decks29 decks
9%synergy
Takenuma, Abandoned Mire
17%inclusion5 decks29 decks
2%synergy
Vesuva
14%inclusion4 decks29 decks
11%synergy
The Black Gate
14%inclusion4 decks29 decks
10%synergy
Urza's Saga
14%inclusion4 decks29 decks
6%synergy
Volrath's Stronghold
14%inclusion4 decks29 decks
10%synergy
Inkmoth Nexus
10%inclusion3 decks29 decks
9%synergy
Lake of the Dead
10%inclusion3 decks29 decks
5%synergy
Spymaster's Vault
10%inclusion3 decks29 decks
1%synergy
Minas Morgul, Dark Fortress
10%inclusion3 decks29 decks
7%synergy
Mutavault
6.9%inclusion2 decks29 decks
6%synergy
Buried Ruin
6.9%inclusion2 decks29 decks
2%synergy
Thespian's Stage
6.9%inclusion2 decks29 decks
2%synergy
Deserted Temple
6.9%inclusion2 decks29 decks
3%synergy
Access Tunnel
6.9%inclusion2 decks29 decks
4%synergy
Homeward Path
6.9%inclusion2 decks29 decks
5%synergy
Mana Artifacts
Sol Ring
100%inclusion29 decks29 decks
14%synergy
Arcane Signet
59%inclusion17 decks29 decks
-3%synergy
Glistening Sphere
31%inclusion9 decks29 decks
30%synergy
The Soul Stone
27%inclusion6 decks22 decks
13%synergy
Staff of Compleation
24%inclusion7 decks29 decks
22%synergy
Throne of Eldraine
17%inclusion5 decks29 decks
7%synergy
Nyx Lotus
17%inclusion5 decks29 decks
11%synergy
Patchwork Banner
14%inclusion4 decks29 decks
9%synergy
Mind Stone
14%inclusion4 decks29 decks
-15%synergy
Gauntlet of Power
10%inclusion3 decks29 decks
7%synergy
Lotus Petal
10%inclusion3 decks29 decks
3%synergy
Fellwar Stone
10%inclusion3 decks29 decks
-4%synergy
The Eternity Elevator
9.1%inclusion2 decks22 decks
8%synergy
Caged Sun
6.9%inclusion2 decks29 decks
-4%synergy
Charcoal Diamond
6.9%inclusion2 decks29 decks
-15%synergy
Heraldic Banner
6.9%inclusion2 decks29 decks
2%synergy
Mox Amber
6.9%inclusion2 decks29 decks
3%synergy
Mox Opal
6.9%inclusion2 decks29 decks
4%synergy
Sceptre of Eternal Glory
6.9%inclusion2 decks29 decks
-1%synergy
Lands
Swamp
97%inclusion28 decks29 decks
1%synergy
Cavern of Souls
59%inclusion17 decks29 decks
52%synergy
Path of Ancestry
34%inclusion10 decks29 decks
29%synergy
Fell the Profane
14%inclusion4 decks29 decks
-5%synergy
Myriad Landscape
14%inclusion4 decks29 decks
-12%synergy
Prismatic Vista
10%inclusion3 decks29 decks
8%synergy
Urza's Cave
10%inclusion3 decks29 decks
2%synergy
Polluted Delta
10%inclusion3 decks29 decks
7%synergy
Bloodstained Mire
10%inclusion3 decks29 decks
7%synergy
Marsh Flats
10%inclusion3 decks29 decks
7%synergy
Command Tower
6.9%inclusion2 decks29 decks
1%synergy
Fabled Passage
6.9%inclusion2 decks29 decks
5%synergy
Agadeem's Awakening
6.9%inclusion2 decks29 decks
0%synergy
Gemstone Caverns
6.9%inclusion2 decks29 decks
3%synergy
Snow-Covered Swamp
6.9%inclusion2 decks29 decks
0%synergy
Malakir Rebirth
6.9%inclusion2 decks29 decks
-16%synergy
Abundant Countryside
6.3%inclusion1 decks16 decks
6%synergy
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