Karumonix, the Rat King (Commander) - Expensive Upgraded

Karumonix, the Rat King
Rank #407
35decks
As CommanderAs CardAverage DeckDecks
Bracket
All1234
5
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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Sorceries
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Enchantments
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Utility Lands
Mana Artifacts
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Marrow-Gnawer
94%inclusion33 decks35 decks
91%synergy
Piper of the Swarm
91%inclusion32 decks35 decks
85%synergy
Ashcoat of the Shadow Swarm
83%inclusion29 decks35 decks
79%synergy
Pack Rat
80%inclusion28 decks35 decks
74%synergy
Swarmyard
74%inclusion26 decks35 decks
69%synergy
Ichor Rats
71%inclusion25 decks35 decks
69%synergy
Blightbelly Rat
69%inclusion24 decks35 decks
65%synergy
Ogre Slumlord
74%inclusion26 decks35 decks
65%synergy
Lord Skitter, Sewer King
69%inclusion24 decks35 decks
61%synergy
Rat Colony
66%inclusion23 decks35 decks
60%synergy
Top Cards
Jet Medallion
80%inclusion28 decks35 decks
18%synergy
Dark Ritual
80%inclusion28 decks35 decks
13%synergy
Bontu's Monument
66%inclusion23 decks35 decks
38%synergy
Cover of Darkness
57%inclusion20 decks35 decks
54%synergy
Ratcatcher
54%inclusion19 decks35 decks
51%synergy
Phyrexian Arena
51%inclusion18 decks35 decks
12%synergy
Deadly Rollick
49%inclusion17 decks35 decks
23%synergy
Crypt Rats
49%inclusion17 decks35 decks
44%synergy
Tangled Colony
46%inclusion16 decks35 decks
43%synergy
Vraska's Fall
46%inclusion16 decks35 decks
43%synergy
Game Changers
Demonic Tutor
71%inclusion25 decks35 decks
44%synergy
Vampiric Tutor
60%inclusion21 decks35 decks
39%synergy
Bolas's Citadel
31%inclusion11 decks35 decks
3%synergy
Imperial Seal
29%inclusion10 decks35 decks
22%synergy
Ancient Tomb
17%inclusion6 decks35 decks
5%synergy
The One Ring
17%inclusion6 decks35 decks
8%synergy
Necropotence
11%inclusion4 decks35 decks
-3%synergy
Mana Vault
8.6%inclusion3 decks35 decks
2%synergy
Opposition Agent
5.7%inclusion2 decks35 decks
-4%synergy
Field of the Dead
5.7%inclusion2 decks35 decks
4%synergy
Creatures
Septic Rats
43%inclusion15 decks35 decks
41%synergy
Gnat Miser
43%inclusion15 decks35 decks
40%synergy
Nashi, Moon Sage's Scion
40%inclusion14 decks35 decks
36%synergy
Persistent Marshstalker
37%inclusion13 decks35 decks
34%synergy
Typhoid Rats
37%inclusion13 decks35 decks
34%synergy
Crypt Ghast
34%inclusion12 decks35 decks
-13%synergy
Rancid Rats
34%inclusion12 decks35 decks
32%synergy
Ayara, First of Locthwain
31%inclusion11 decks35 decks
6%synergy
Lord Skitter's Butcher
31%inclusion11 decks35 decks
28%synergy
Species Specialist
31%inclusion11 decks35 decks
28%synergy
Valley Rotcaller
31%inclusion11 decks35 decks
29%synergy
Wave of Rats
29%inclusion10 decks35 decks
27%synergy
Rat King, Verminister
27%inclusion6 decks22 decks
24%synergy
Ink-Eyes, Servant of Oni
26%inclusion9 decks35 decks
23%synergy
Locust Miser
26%inclusion9 decks35 decks
24%synergy
Stronghold Rats
26%inclusion9 decks35 decks
22%synergy
Swarm of Rats
23%inclusion8 decks35 decks
20%synergy
Chittering Witch
20%inclusion7 decks35 decks
16%synergy
Voracious Vermin
20%inclusion7 decks35 decks
17%synergy
Yawgmoth, Thran Physician
20%inclusion7 decks35 decks
10%synergy
Nezumi Informant
20%inclusion7 decks35 decks
14%synergy
Nezumi Prowler
20%inclusion7 decks35 decks
19%synergy
Gray Merchant of Asphodel
17%inclusion6 decks35 decks
-33%synergy
Throat Slitter
17%inclusion6 decks35 decks
15%synergy
Changeling Outcast
17%inclusion6 decks35 decks
12%synergy
Okiba-Gang Shinobi
17%inclusion6 decks35 decks
16%synergy
Undercity Dire Rat
17%inclusion5 decks30 decks
15%synergy
Engine Rat
15%inclusion5 decks33 decks
13%synergy
Relentless Rats
14%inclusion5 decks35 decks
13%synergy
Burglar Rat
14%inclusion5 decks35 decks
4%synergy
Roaming Throne
14%inclusion5 decks35 decks
11%synergy
Chittering Skitterling
14%inclusion5 decks35 decks
13%synergy
Twisted Sewer-Witch
14%inclusion5 decks35 decks
13%synergy
Nezumi Cutthroat
14%inclusion5 decks35 decks
14%synergy
Pestilence Rats
14%inclusion5 decks35 decks
12%synergy
Nezumi Bone-Reader
14%inclusion5 decks35 decks
13%synergy
Rat King, Pale Piper
12%inclusion2 decks17 decks
8%synergy
Refurbished Familiar
11%inclusion4 decks35 decks
9%synergy
Nezumi Graverobber
11%inclusion4 decks35 decks
10%synergy
Rotting Rats
11%inclusion4 decks35 decks
8%synergy
Nezumi Shortfang
11%inclusion4 decks35 decks
11%synergy
Adaptive Automaton
11%inclusion4 decks35 decks
10%synergy
Zodiac Rat
11%inclusion4 decks35 decks
11%synergy
Zulaport Cutthroat
11%inclusion4 decks35 decks
-12%synergy
Drainpipe Vermin
11%inclusion4 decks35 decks
10%synergy
Carrion Rats
8.6%inclusion3 decks35 decks
8%synergy
Metallic Mimic
8.6%inclusion3 decks35 decks
8%synergy
Ravenous Rats
8.6%inclusion3 decks35 decks
7%synergy
Crashing Drawbridge
8.6%inclusion3 decks35 decks
6%synergy
Ruthless Radrat
8.6%inclusion3 decks35 decks
8%synergy
Instants
Culling the Weak
34%inclusion12 decks35 decks
16%synergy
Go for the Throat
31%inclusion11 decks35 decks
9%synergy
Village Rites
31%inclusion11 decks35 decks
6%synergy
Cabal Ritual
29%inclusion10 decks35 decks
10%synergy
Withering Torment
26%inclusion9 decks34 decks
-5%synergy
Defile
23%inclusion8 decks35 decks
-12%synergy
Whisper of the Dross
20%inclusion7 decks35 decks
17%synergy
Imp's Mischief
20%inclusion7 decks35 decks
-5%synergy
Grim Affliction
14%inclusion5 decks35 decks
13%synergy
Deadly Dispute
14%inclusion5 decks35 decks
-13%synergy
Infernal Grasp
14%inclusion5 decks35 decks
-11%synergy
Sudden Spoiling
14%inclusion5 decks35 decks
6%synergy
Fell the Profane
11%inclusion4 decks35 decks
-8%synergy
Anoint with Affliction
11%inclusion4 decks35 decks
11%synergy
Tainted Strike
11%inclusion4 decks35 decks
8%synergy
Malakir Rebirth
11%inclusion4 decks35 decks
-12%synergy
Corrupted Conviction
11%inclusion4 decks35 decks
-1%synergy
Tragic Slip
11%inclusion4 decks35 decks
-7%synergy
Hero's Downfall
8.6%inclusion3 decks35 decks
2%synergy
Sheoldred's Edict
8.6%inclusion3 decks35 decks
-6%synergy
Snuff Out
8.6%inclusion3 decks35 decks
-5%synergy
Rat Out
8.6%inclusion3 decks35 decks
7%synergy
Doom Blade
8.6%inclusion3 decks35 decks
2%synergy
Raise the Draugr
8.6%inclusion3 decks35 decks
8%synergy
Darkness
8.6%inclusion3 decks35 decks
-2%synergy
Force of Despair
5.7%inclusion2 decks35 decks
-2%synergy
Songs of the Damned
5.7%inclusion2 decks35 decks
0%synergy
Virulent Wound
5.7%inclusion2 decks35 decks
5%synergy
Murder
5.7%inclusion2 decks35 decks
-4%synergy
Baleful Mastery
5.7%inclusion2 decks35 decks
-2%synergy
Terror
5.7%inclusion2 decks35 decks
5%synergy
Liliana's Triumph
5.7%inclusion2 decks35 decks
-0%synergy
Vona's Hunger
5.7%inclusion2 decks35 decks
1%synergy
Dismember
5.7%inclusion2 decks35 decks
-5%synergy
Sorceries
Infectious Inquiry
46%inclusion16 decks35 decks
43%synergy
Kindred Dominance
46%inclusion16 decks35 decks
41%synergy
Drown in Ichor
43%inclusion15 decks35 decks
39%synergy
Diabolic Intent
40%inclusion14 decks35 decks
25%synergy
Phyresis Outbreak
40%inclusion14 decks35 decks
38%synergy
Revenge of the Rats
35%inclusion12 decks34 decks
32%synergy
Feed the Swarm
31%inclusion11 decks35 decks
-19%synergy
Toxic Deluge
31%inclusion11 decks35 decks
-5%synergy
Bloodline Bidding
26%inclusion6 decks23 decks
22%synergy
Patriarch's Bidding
26%inclusion9 decks35 decks
22%synergy
Swarmyard Massacre
26%inclusion9 decks35 decks
23%synergy
Exsanguinate
23%inclusion8 decks35 decks
-2%synergy
Grim Tutor
23%inclusion8 decks35 decks
11%synergy
Echoing Return
17%inclusion6 decks35 decks
14%synergy
Sign in Blood
17%inclusion6 decks35 decks
-18%synergy
Damnation
17%inclusion6 decks35 decks
-3%synergy
Diabolic Tutor
14%inclusion5 decks35 decks
1%synergy
Torment of Hailfire
14%inclusion5 decks35 decks
-1%synergy
Bubbling Muck
14%inclusion5 decks35 decks
-1%synergy
Night's Whisper
14%inclusion5 decks35 decks
-11%synergy
Reanimate
14%inclusion5 decks35 decks
-26%synergy
Plague of Vermin
14%inclusion5 decks35 decks
12%synergy
Vat Emergence
11%inclusion4 decks35 decks
10%synergy
Victimize
8.6%inclusion3 decks35 decks
-19%synergy
Agadeem's Awakening
8.6%inclusion3 decks35 decks
1%synergy
Disentomb
8.6%inclusion3 decks35 decks
8%synergy
Rise of the Dark Realms
8.6%inclusion3 decks35 decks
-5%synergy
Pact of the Serpent
8.6%inclusion3 decks35 decks
7%synergy
Blasphemous Edict
5.9%inclusion2 decks34 decks
-10%synergy
Shredder's Technique
5.9%inclusion1 decks17 decks
3%synergy
Spread the Sickness
5.7%inclusion2 decks35 decks
5%synergy
Duress
5.7%inclusion2 decks35 decks
-1%synergy
Read the Bones
5.7%inclusion2 decks35 decks
-10%synergy
Mutilate
5.7%inclusion2 decks35 decks
-10%synergy
Living Death
5.7%inclusion2 decks35 decks
-5%synergy
Phyrexian Tribute
5.7%inclusion2 decks35 decks
5%synergy
Beseech the Mirror
5.7%inclusion2 decks35 decks
-1%synergy
Crippling Fear
5.7%inclusion2 decks35 decks
3%synergy
Thoughtseize
5.7%inclusion2 decks35 decks
1%synergy
Utility Artifacts
Herald's Horn
46%inclusion16 decks35 decks
40%synergy
Skullclamp
43%inclusion15 decks35 decks
21%synergy
Thrumming Stone
40%inclusion14 decks35 decks
36%synergy
Lightning Greaves
29%inclusion10 decks35 decks
-5%synergy
Chronicle of Victory
22%inclusion5 decks23 decks
19%synergy
Ashnod's Altar
20%inclusion7 decks35 decks
0%synergy
Sword of Truth and Justice
20%inclusion7 decks35 decks
19%synergy
Vanquisher's Banner
20%inclusion7 decks35 decks
16%synergy
Door of Destinies
20%inclusion7 decks35 decks
18%synergy
Thornbite Staff
20%inclusion7 decks35 decks
17%synergy
The Darkness Crystal
20%inclusion6 decks30 decks
-0%synergy
Sensei's Divining Top
17%inclusion6 decks35 decks
9%synergy
Whip of Erebos
17%inclusion6 decks35 decks
6%synergy
Coat of Arms
17%inclusion6 decks35 decks
15%synergy
Phyrexian Altar
17%inclusion6 decks35 decks
3%synergy
Banner of Kinship
15%inclusion5 decks34 decks
13%synergy
Expedition Map
14%inclusion5 decks35 decks
3%synergy
Urza's Incubator
14%inclusion5 decks35 decks
12%synergy
Contagion Clasp
11%inclusion4 decks35 decks
9%synergy
Eldrazi Monument
11%inclusion4 decks35 decks
10%synergy
Swiftfoot Boots
11%inclusion4 decks35 decks
-20%synergy
Gathering Stone
8.7%inclusion2 decks23 decks
7%synergy
Contagion Engine
8.6%inclusion3 decks35 decks
7%synergy
Helm of the Host
8.6%inclusion3 decks35 decks
7%synergy
Sword of Hearth and Home
8.6%inclusion3 decks35 decks
7%synergy
Akroma's Memorial
8.6%inclusion3 decks35 decks
8%synergy
Whispersilk Cloak
8.6%inclusion3 decks35 decks
3%synergy
Commander's Plate
8.6%inclusion3 decks35 decks
2%synergy
Grafted Exoskeleton
8.6%inclusion3 decks35 decks
7%synergy
Mirror Box
5.7%inclusion2 decks35 decks
5%synergy
Scroll Rack
5.7%inclusion2 decks35 decks
5%synergy
Recon Craft Theta
5.7%inclusion2 decks35 decks
6%synergy
Altar of the Brood
5.7%inclusion2 decks35 decks
4%synergy
Mindcrank
5.7%inclusion2 decks35 decks
0%synergy
Enchantments
Grave Pact
40%inclusion14 decks35 decks
21%synergy
Black Market Connections
26%inclusion9 decks35 decks
1%synergy
Black Market
23%inclusion8 decks35 decks
3%synergy
Haunted One
23%inclusion8 decks35 decks
20%synergy
Oversold Cemetery
23%inclusion8 decks35 decks
18%synergy
Necrogen Communion
17%inclusion6 decks35 decks
15%synergy
The Meathook Massacre
14%inclusion5 decks35 decks
-3%synergy
Bastion of Remembrance
11%inclusion4 decks35 decks
-6%synergy
Vampiric Rites
8.6%inclusion3 decks35 decks
3%synergy
Sanguine Bond
8.6%inclusion3 decks35 decks
-3%synergy
Exquisite Blood
8.6%inclusion3 decks35 decks
-5%synergy
Phyresis
8.6%inclusion3 decks35 decks
7%synergy
Intimidation
8.6%inclusion3 decks35 decks
8%synergy
Painful Quandary
8.6%inclusion3 decks35 decks
-2%synergy
Lord Skitter's Blessing
8.6%inclusion3 decks35 decks
8%synergy
Dark Prophecy
8.6%inclusion3 decks35 decks
5%synergy
Sothera, the Supervoid
6.9%inclusion2 decks29 decks
4%synergy
Phyrexian Reclamation
5.7%inclusion2 decks35 decks
-4%synergy
Conspiracy
5.7%inclusion2 decks35 decks
5%synergy
Dictate of Erebos
5.7%inclusion2 decks35 decks
-5%synergy
No Mercy
5.7%inclusion2 decks35 decks
-2%synergy
Oubliette
5.7%inclusion2 decks35 decks
3%synergy
Bloodchief Ascension
5.7%inclusion2 decks35 decks
-3%synergy
Bad Moon
5.7%inclusion2 decks35 decks
3%synergy
Planeswalkers
Vraska, Betrayal's Sting
40%inclusion14 decks35 decks
37%synergy
Liliana of the Dark Realms
20%inclusion7 decks35 decks
6%synergy
Utility Lands
Cabal Coffers
80%inclusion28 decks35 decks
25%synergy
Urborg, Tomb of Yawgmoth
74%inclusion26 decks35 decks
37%synergy
Phyrexian Tower
54%inclusion19 decks35 decks
28%synergy
Nykthos, Shrine to Nyx
49%inclusion17 decks35 decks
19%synergy
Three Tree City
49%inclusion17 decks35 decks
44%synergy
Bojuka Bog
46%inclusion16 decks35 decks
-1%synergy
Cabal Stronghold
40%inclusion14 decks35 decks
6%synergy
Karn's Bastion
40%inclusion14 decks35 decks
36%synergy
Castle Locthwain
40%inclusion14 decks35 decks
23%synergy
Shizo, Death's Storehouse
34%inclusion12 decks35 decks
24%synergy
Reliquary Tower
31%inclusion11 decks35 decks
2%synergy
Witch's Cottage
29%inclusion10 decks35 decks
4%synergy
Mudflat Village
29%inclusion10 decks35 decks
26%synergy
Rogue's Passage
29%inclusion10 decks35 decks
9%synergy
War Room
26%inclusion9 decks35 decks
10%synergy
Secret Tunnel
23%inclusion6 decks26 decks
22%synergy
Crypt of Agadeem
23%inclusion8 decks35 decks
11%synergy
Volrath's Stronghold
23%inclusion8 decks35 decks
19%synergy
Mortuary Mire
20%inclusion7 decks35 decks
7%synergy
Minas Morgul, Dark Fortress
17%inclusion6 decks35 decks
14%synergy
Takenuma, Abandoned Mire
17%inclusion6 decks35 decks
1%synergy
Lake of the Dead
17%inclusion6 decks35 decks
12%synergy
The Black Gate
11%inclusion4 decks35 decks
8%synergy
Urza's Saga
11%inclusion4 decks35 decks
3%synergy
Access Tunnel
11%inclusion4 decks35 decks
9%synergy
Vesuva
8.6%inclusion3 decks35 decks
6%synergy
Spymaster's Vault
8.6%inclusion3 decks35 decks
-1%synergy
Command Beacon
8.6%inclusion3 decks35 decks
0%synergy
Thespian's Stage
8.6%inclusion3 decks35 decks
4%synergy
Inkmoth Nexus
5.7%inclusion2 decks35 decks
5%synergy
Mutavault
5.7%inclusion2 decks35 decks
5%synergy
Temple of the False God
5.7%inclusion2 decks35 decks
-2%synergy
Mana Artifacts
Sol Ring
97%inclusion34 decks35 decks
12%synergy
Arcane Signet
49%inclusion17 decks35 decks
-13%synergy
Glistening Sphere
37%inclusion13 decks35 decks
36%synergy
The Soul Stone
29%inclusion8 decks28 decks
13%synergy
Staff of Compleation
26%inclusion9 decks35 decks
24%synergy
Patchwork Banner
17%inclusion6 decks35 decks
13%synergy
Throne of Eldraine
14%inclusion5 decks35 decks
5%synergy
Mind Stone
14%inclusion5 decks35 decks
-14%synergy
Worn Powerstone
11%inclusion4 decks35 decks
7%synergy
Nyx Lotus
11%inclusion4 decks35 decks
6%synergy
Gauntlet of Power
8.6%inclusion3 decks35 decks
6%synergy
Lotus Petal
8.6%inclusion3 decks35 decks
1%synergy
Heraldic Banner
8.6%inclusion3 decks35 decks
3%synergy
Mox Amber
8.6%inclusion3 decks35 decks
4%synergy
Fellwar Stone
8.6%inclusion3 decks35 decks
-5%synergy
Thought Vessel
8.6%inclusion3 decks35 decks
-16%synergy
Mox Opal
8.6%inclusion3 decks35 decks
5%synergy
The Eternity Elevator
7.1%inclusion2 decks28 decks
6%synergy
Caged Sun
5.7%inclusion2 decks35 decks
-5%synergy
Thran Dynamo
5.7%inclusion2 decks35 decks
-0%synergy
Phyrexian Atlas
5.7%inclusion2 decks35 decks
5%synergy
Springleaf Drum
5.7%inclusion2 decks35 decks
4%synergy
Sceptre of Eternal Glory
5.7%inclusion2 decks35 decks
-2%synergy
Chrome Mox
5.7%inclusion2 decks35 decks
-0%synergy
Lands
Swamp
94%inclusion33 decks35 decks
-1%synergy
Cavern of Souls
63%inclusion22 decks35 decks
56%synergy
Path of Ancestry
43%inclusion15 decks35 decks
38%synergy
Myriad Landscape
14%inclusion5 decks35 decks
-10%synergy
Fell the Profane
11%inclusion4 decks35 decks
-8%synergy
Urza's Cave
11%inclusion4 decks35 decks
3%synergy
Malakir Rebirth
11%inclusion4 decks35 decks
-12%synergy
Polluted Delta
11%inclusion4 decks35 decks
8%synergy
Abundant Countryside
8.7%inclusion2 decks23 decks
8%synergy
Prismatic Vista
8.6%inclusion3 decks35 decks
6%synergy
Command Tower
8.6%inclusion3 decks35 decks
3%synergy
Agadeem's Awakening
8.6%inclusion3 decks35 decks
1%synergy
Snow-Covered Swamp
8.6%inclusion3 decks35 decks
2%synergy
Marsh Flats
8.6%inclusion3 decks35 decks
5%synergy
Bloodstained Mire
8.6%inclusion3 decks35 decks
5%synergy
Fabled Passage
5.7%inclusion2 decks35 decks
4%synergy
Evolving Wilds
5.7%inclusion2 decks35 decks
2%synergy
Gemstone Caverns
5.7%inclusion2 decks35 decks
1%synergy
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