Karumonix, the Rat King (Commander) - Expensive Upgraded

Karumonix, the Rat King
Rank #393
31decks
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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Utility Lands
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Marrow-Gnawer
90%inclusion28 decks31 decks
87%synergy
Ashcoat of the Shadow Swarm
84%inclusion26 decks31 decks
80%synergy
Piper of the Swarm
87%inclusion27 decks31 decks
80%synergy
Pack Rat
77%inclusion24 decks31 decks
71%synergy
Swarmyard
74%inclusion23 decks31 decks
68%synergy
Ichor Rats
68%inclusion21 decks31 decks
65%synergy
Blightbelly Rat
68%inclusion21 decks31 decks
64%synergy
Ogre Slumlord
74%inclusion23 decks31 decks
64%synergy
Lord Skitter, Sewer King
68%inclusion21 decks31 decks
59%synergy
Rat Colony
65%inclusion20 decks31 decks
59%synergy
Top Cards
Dark Ritual
81%inclusion25 decks31 decks
14%synergy
Jet Medallion
74%inclusion23 decks31 decks
12%synergy
Bontu's Monument
65%inclusion20 decks31 decks
36%synergy
Phyrexian Arena
55%inclusion17 decks31 decks
15%synergy
Deadly Rollick
52%inclusion16 decks31 decks
27%synergy
Ratcatcher
48%inclusion15 decks31 decks
45%synergy
Diabolic Intent
45%inclusion14 decks31 decks
30%synergy
Vraska's Fall
45%inclusion14 decks31 decks
42%synergy
Tangled Colony
45%inclusion14 decks31 decks
42%synergy
Gnat Miser
45%inclusion14 decks31 decks
42%synergy
Game Changers
Demonic Tutor
74%inclusion23 decks31 decks
47%synergy
Vampiric Tutor
61%inclusion19 decks31 decks
40%synergy
Bolas's Citadel
32%inclusion10 decks31 decks
4%synergy
Imperial Seal
26%inclusion8 decks31 decks
19%synergy
The One Ring
19%inclusion6 decks31 decks
10%synergy
Ancient Tomb
16%inclusion5 decks31 decks
4%synergy
Opposition Agent
6.5%inclusion2 decks31 decks
-3%synergy
Chrome Mox
6.5%inclusion2 decks31 decks
0%synergy
Mana Vault
6.5%inclusion2 decks31 decks
-0%synergy
Field of the Dead
6.5%inclusion2 decks31 decks
5%synergy
Creatures
Crypt Rats
45%inclusion14 decks31 decks
41%synergy
Persistent Marshstalker
42%inclusion13 decks31 decks
39%synergy
Nashi, Moon Sage's Scion
39%inclusion12 decks31 decks
35%synergy
Lord Skitter's Butcher
35%inclusion11 decks31 decks
32%synergy
Septic Rats
35%inclusion11 decks31 decks
34%synergy
Typhoid Rats
35%inclusion11 decks31 decks
32%synergy
Valley Rotcaller
32%inclusion10 decks31 decks
30%synergy
Rancid Rats
32%inclusion10 decks31 decks
30%synergy
Crypt Ghast
32%inclusion10 decks31 decks
-15%synergy
Wave of Rats
32%inclusion10 decks31 decks
30%synergy
Species Specialist
29%inclusion9 decks31 decks
26%synergy
Stronghold Rats
29%inclusion9 decks31 decks
25%synergy
Ayara, First of Locthwain
29%inclusion9 decks31 decks
4%synergy
Nezumi Informant
26%inclusion8 decks31 decks
19%synergy
Ink-Eyes, Servant of Oni
26%inclusion8 decks31 decks
23%synergy
Voracious Vermin
26%inclusion8 decks31 decks
23%synergy
Locust Miser
23%inclusion7 decks31 decks
21%synergy
Swarm of Rats
23%inclusion7 decks31 decks
20%synergy
Undercity Dire Rat
20%inclusion5 decks25 decks
18%synergy
Chittering Skitterling
19%inclusion6 decks31 decks
18%synergy
Burglar Rat
19%inclusion6 decks31 decks
9%synergy
Chittering Witch
19%inclusion6 decks31 decks
15%synergy
Nezumi Prowler
19%inclusion6 decks31 decks
18%synergy
Rat King, Verminister
19%inclusion3 decks16 decks
16%synergy
Engine Rat
17%inclusion5 decks29 decks
16%synergy
Gray Merchant of Asphodel
16%inclusion5 decks31 decks
-35%synergy
Throat Slitter
16%inclusion5 decks31 decks
14%synergy
Changeling Outcast
16%inclusion5 decks31 decks
11%synergy
Pestilence Rats
16%inclusion5 decks31 decks
14%synergy
Okiba-Gang Shinobi
16%inclusion5 decks31 decks
15%synergy
Relentless Rats
16%inclusion5 decks31 decks
14%synergy
Yawgmoth, Thran Physician
16%inclusion5 decks31 decks
6%synergy
Twisted Sewer-Witch
13%inclusion4 decks31 decks
11%synergy
Refurbished Familiar
13%inclusion4 decks31 decks
11%synergy
Rotting Rats
13%inclusion4 decks31 decks
10%synergy
Nezumi Bone-Reader
13%inclusion4 decks31 decks
12%synergy
Adaptive Automaton
13%inclusion4 decks31 decks
12%synergy
Zulaport Cutthroat
13%inclusion4 decks31 decks
-10%synergy
Nezumi Graverobber
10%inclusion3 decks31 decks
8%synergy
Carrion Rats
10%inclusion3 decks31 decks
9%synergy
Roaming Throne
10%inclusion3 decks31 decks
7%synergy
Old Flitterfang
10%inclusion3 decks31 decks
8%synergy
Filth
10%inclusion3 decks31 decks
7%synergy
Nezumi Shortfang
10%inclusion3 decks31 decks
9%synergy
Zodiac Rat
10%inclusion3 decks31 decks
9%synergy
Graf Rats
10%inclusion3 decks31 decks
9%synergy
Nezumi Cutthroat
10%inclusion3 decks31 decks
9%synergy
Drainpipe Vermin
10%inclusion3 decks31 decks
8%synergy
Metallic Mimic
10%inclusion3 decks31 decks
9%synergy
Ruin Rat
10%inclusion3 decks31 decks
8%synergy
Instants
Go for the Throat
35%inclusion11 decks31 decks
13%synergy
Village Rites
35%inclusion11 decks31 decks
10%synergy
Culling the Weak
26%inclusion8 decks31 decks
9%synergy
Withering Torment
23%inclusion7 decks30 decks
-8%synergy
Cabal Ritual
23%inclusion7 decks31 decks
4%synergy
Defile
23%inclusion7 decks31 decks
-13%synergy
Whisper of the Dross
19%inclusion6 decks31 decks
17%synergy
Deadly Dispute
16%inclusion5 decks31 decks
-10%synergy
Infernal Grasp
16%inclusion5 decks31 decks
-9%synergy
Tainted Strike
16%inclusion5 decks31 decks
13%synergy
Corrupted Conviction
16%inclusion5 decks31 decks
4%synergy
Anoint with Affliction
13%inclusion4 decks31 decks
12%synergy
Sudden Spoiling
13%inclusion4 decks31 decks
4%synergy
Grim Affliction
13%inclusion4 decks31 decks
11%synergy
Tragic Slip
13%inclusion4 decks31 decks
-7%synergy
Imp's Mischief
13%inclusion4 decks31 decks
-12%synergy
Fell the Profane
10%inclusion3 decks31 decks
-10%synergy
Rat Out
10%inclusion3 decks31 decks
8%synergy
Hero's Downfall
10%inclusion3 decks31 decks
3%synergy
Doom Blade
10%inclusion3 decks31 decks
3%synergy
Snuff Out
6.5%inclusion2 decks31 decks
-7%synergy
Malakir Rebirth
6.5%inclusion2 decks31 decks
-17%synergy
Baleful Mastery
6.5%inclusion2 decks31 decks
-2%synergy
Force of Despair
6.5%inclusion2 decks31 decks
-1%synergy
Virulent Wound
6.5%inclusion2 decks31 decks
6%synergy
Raise the Draugr
6.5%inclusion2 decks31 decks
6%synergy
Murder
6.5%inclusion2 decks31 decks
-4%synergy
Liliana's Triumph
6.5%inclusion2 decks31 decks
1%synergy
Dismember
6.5%inclusion2 decks31 decks
-4%synergy
Sorceries
Infectious Inquiry
42%inclusion13 decks31 decks
39%synergy
Kindred Dominance
42%inclusion13 decks31 decks
37%synergy
Phyresis Outbreak
39%inclusion12 decks31 decks
37%synergy
Drown in Ichor
39%inclusion12 decks31 decks
35%synergy
Revenge of the Rats
37%inclusion11 decks30 decks
34%synergy
Feed the Swarm
35%inclusion11 decks31 decks
-15%synergy
Toxic Deluge
35%inclusion11 decks31 decks
-1%synergy
Patriarch's Bidding
32%inclusion10 decks31 decks
28%synergy
Swarmyard Massacre
26%inclusion8 decks31 decks
23%synergy
Echoing Return
19%inclusion6 decks31 decks
16%synergy
Exsanguinate
19%inclusion6 decks31 decks
-5%synergy
Damnation
19%inclusion6 decks31 decks
-1%synergy
Grim Tutor
19%inclusion6 decks31 decks
8%synergy
Plague of Vermin
16%inclusion5 decks31 decks
14%synergy
Reanimate
16%inclusion5 decks31 decks
-24%synergy
Night's Whisper
13%inclusion4 decks31 decks
-12%synergy
Sign in Blood
13%inclusion4 decks31 decks
-22%synergy
Diabolic Tutor
13%inclusion4 decks31 decks
-1%synergy
Torment of Hailfire
13%inclusion4 decks31 decks
-2%synergy
Bloodline Bidding
12%inclusion2 decks17 decks
7%synergy
Agadeem's Awakening
10%inclusion3 decks31 decks
2%synergy
Pact of the Serpent
10%inclusion3 decks31 decks
8%synergy
Bubbling Muck
10%inclusion3 decks31 decks
-6%synergy
Rise of the Dark Realms
10%inclusion3 decks31 decks
-3%synergy
Disentomb
10%inclusion3 decks31 decks
9%synergy
Crippling Fear
10%inclusion3 decks31 decks
7%synergy
Shredder's Technique
9.1%inclusion1 decks11 decks
6%synergy
Blasphemous Edict
6.7%inclusion2 decks30 decks
-10%synergy
Vat Emergence
6.5%inclusion2 decks31 decks
5%synergy
Victimize
6.5%inclusion2 decks31 decks
-21%synergy
Scheming Symmetry
6.5%inclusion2 decks31 decks
2%synergy
Insatiable Avarice
6.5%inclusion2 decks31 decks
-5%synergy
Phyrexian Tribute
6.5%inclusion2 decks31 decks
6%synergy
Haunting Voyage
6.5%inclusion2 decks31 decks
5%synergy
Duress
6.5%inclusion2 decks31 decks
0%synergy
Beseech the Mirror
6.5%inclusion2 decks31 decks
-0%synergy
Utility Artifacts
Skullclamp
45%inclusion14 decks31 decks
23%synergy
Herald's Horn
45%inclusion14 decks31 decks
39%synergy
Thrumming Stone
42%inclusion13 decks31 decks
38%synergy
Lightning Greaves
23%inclusion7 decks31 decks
-11%synergy
Vanquisher's Banner
23%inclusion7 decks31 decks
19%synergy
Sensei's Divining Top
23%inclusion7 decks31 decks
15%synergy
The Darkness Crystal
20%inclusion5 decks25 decks
-0%synergy
Ashnod's Altar
19%inclusion6 decks31 decks
-0%synergy
Sword of Truth and Justice
19%inclusion6 decks31 decks
19%synergy
Phyrexian Altar
19%inclusion6 decks31 decks
6%synergy
Thornbite Staff
19%inclusion6 decks31 decks
17%synergy
Chronicle of Victory
18%inclusion3 decks17 decks
15%synergy
Coat of Arms
16%inclusion5 decks31 decks
13%synergy
Expedition Map
16%inclusion5 decks31 decks
5%synergy
Door of Destinies
16%inclusion5 decks31 decks
14%synergy
Eldrazi Monument
13%inclusion4 decks31 decks
11%synergy
Swiftfoot Boots
13%inclusion4 decks31 decks
-18%synergy
Whip of Erebos
13%inclusion4 decks31 decks
2%synergy
Banner of Kinship
10%inclusion3 decks30 decks
8%synergy
Sword of Hearth and Home
10%inclusion3 decks31 decks
8%synergy
Contagion Engine
10%inclusion3 decks31 decks
8%synergy
Urza's Incubator
10%inclusion3 decks31 decks
8%synergy
Commander's Plate
10%inclusion3 decks31 decks
4%synergy
Contagion Clasp
6.5%inclusion2 decks31 decks
4%synergy
Scroll Rack
6.5%inclusion2 decks31 decks
6%synergy
Recon Craft Theta
6.5%inclusion2 decks31 decks
6%synergy
Grafted Exoskeleton
6.5%inclusion2 decks31 decks
5%synergy
Akroma's Memorial
6.5%inclusion2 decks31 decks
6%synergy
Mirror Box
6.5%inclusion2 decks31 decks
6%synergy
Aetherflux Reservoir
6.5%inclusion2 decks31 decks
-3%synergy
Altar of the Brood
6.5%inclusion2 decks31 decks
5%synergy
Gathering Stone
5.9%inclusion1 decks17 decks
5%synergy
Enchantments
Cover of Darkness
45%inclusion14 decks31 decks
42%synergy
Grave Pact
39%inclusion12 decks31 decks
19%synergy
Black Market Connections
32%inclusion10 decks31 decks
8%synergy
Haunted One
29%inclusion9 decks31 decks
26%synergy
Oversold Cemetery
23%inclusion7 decks31 decks
17%synergy
Black Market
19%inclusion6 decks31 decks
-1%synergy
The Meathook Massacre
16%inclusion5 decks31 decks
-1%synergy
Necrogen Communion
13%inclusion4 decks31 decks
11%synergy
Vampiric Rites
10%inclusion3 decks31 decks
4%synergy
Bastion of Remembrance
10%inclusion3 decks31 decks
-8%synergy
Lord Skitter's Blessing
10%inclusion3 decks31 decks
9%synergy
Dark Prophecy
10%inclusion3 decks31 decks
6%synergy
Sanguine Bond
10%inclusion3 decks31 decks
-2%synergy
Exquisite Blood
10%inclusion3 decks31 decks
-4%synergy
Sothera, the Supervoid
8.3%inclusion2 decks24 decks
6%synergy
Conspiracy
6.5%inclusion2 decks31 decks
6%synergy
Intimidation
6.5%inclusion2 decks31 decks
6%synergy
Oubliette
6.5%inclusion2 decks31 decks
4%synergy
Phyresis
6.5%inclusion2 decks31 decks
4%synergy
No Mercy
6.5%inclusion2 decks31 decks
-1%synergy
Painful Quandary
6.5%inclusion2 decks31 decks
-4%synergy
Bad Moon
6.5%inclusion2 decks31 decks
3%synergy
Phyrexian Reclamation
6.5%inclusion2 decks31 decks
-3%synergy
Planeswalkers
Vraska, Betrayal's Sting
39%inclusion12 decks31 decks
36%synergy
Liliana of the Dark Realms
26%inclusion8 decks31 decks
12%synergy
Utility Lands
Cabal Coffers
84%inclusion26 decks31 decks
29%synergy
Urborg, Tomb of Yawgmoth
77%inclusion24 decks31 decks
40%synergy
Nykthos, Shrine to Nyx
52%inclusion16 decks31 decks
22%synergy
Three Tree City
52%inclusion16 decks31 decks
47%synergy
Cabal Stronghold
48%inclusion15 decks31 decks
14%synergy
Phyrexian Tower
48%inclusion15 decks31 decks
23%synergy
Bojuka Bog
42%inclusion13 decks31 decks
-5%synergy
Karn's Bastion
39%inclusion12 decks31 decks
35%synergy
Castle Locthwain
39%inclusion12 decks31 decks
22%synergy
Mudflat Village
35%inclusion11 decks31 decks
33%synergy
Shizo, Death's Storehouse
32%inclusion10 decks31 decks
22%synergy
Witch's Cottage
29%inclusion9 decks31 decks
5%synergy
War Room
29%inclusion9 decks31 decks
13%synergy
Rogue's Passage
29%inclusion9 decks31 decks
10%synergy
Reliquary Tower
29%inclusion9 decks31 decks
-1%synergy
Mortuary Mire
26%inclusion8 decks31 decks
13%synergy
Crypt of Agadeem
23%inclusion7 decks31 decks
11%synergy
Volrath's Stronghold
23%inclusion7 decks31 decks
19%synergy
Takenuma, Abandoned Mire
23%inclusion7 decks31 decks
7%synergy
Secret Tunnel
20%inclusion4 decks20 decks
19%synergy
Minas Morgul, Dark Fortress
16%inclusion5 decks31 decks
13%synergy
Urza's Saga
16%inclusion5 decks31 decks
8%synergy
Access Tunnel
13%inclusion4 decks31 decks
10%synergy
Vesuva
10%inclusion3 decks31 decks
7%synergy
Lake of the Dead
10%inclusion3 decks31 decks
5%synergy
The Black Gate
10%inclusion3 decks31 decks
6%synergy
Thespian's Stage
10%inclusion3 decks31 decks
5%synergy
Spymaster's Vault
10%inclusion3 decks31 decks
-0%synergy
Command Beacon
10%inclusion3 decks31 decks
1%synergy
Inkmoth Nexus
6.5%inclusion2 decks31 decks
6%synergy
Urborg
6.5%inclusion2 decks31 decks
5%synergy
Leechridden Swamp
6.5%inclusion2 decks31 decks
4%synergy
Mutavault
6.5%inclusion2 decks31 decks
6%synergy
Deserted Temple
6.5%inclusion2 decks31 decks
2%synergy
Temple of the False God
6.5%inclusion2 decks31 decks
-1%synergy
Strip Mine
6.5%inclusion2 decks31 decks
4%synergy
Mana Artifacts
Sol Ring
97%inclusion30 decks31 decks
11%synergy
Arcane Signet
48%inclusion15 decks31 decks
-13%synergy
Glistening Sphere
29%inclusion9 decks31 decks
28%synergy
The Soul Stone
26%inclusion6 decks23 decks
11%synergy
Staff of Compleation
26%inclusion8 decks31 decks
24%synergy
Patchwork Banner
19%inclusion6 decks31 decks
15%synergy
Throne of Eldraine
13%inclusion4 decks31 decks
3%synergy
Nyx Lotus
13%inclusion4 decks31 decks
7%synergy
Mind Stone
13%inclusion4 decks31 decks
-16%synergy
Gauntlet of Power
10%inclusion3 decks31 decks
7%synergy
Heraldic Banner
10%inclusion3 decks31 decks
4%synergy
Mox Opal
10%inclusion3 decks31 decks
6%synergy
Fellwar Stone
10%inclusion3 decks31 decks
-4%synergy
The Eternity Elevator
8.7%inclusion2 decks23 decks
8%synergy
Caged Sun
6.5%inclusion2 decks31 decks
-4%synergy
Sceptre of Eternal Glory
6.5%inclusion2 decks31 decks
-2%synergy
Mox Amber
6.5%inclusion2 decks31 decks
2%synergy
Lotus Petal
6.5%inclusion2 decks31 decks
-1%synergy
Worn Powerstone
6.5%inclusion2 decks31 decks
2%synergy
Lands
Swamp
94%inclusion29 decks31 decks
-2%synergy
Cavern of Souls
65%inclusion20 decks31 decks
58%synergy
Path of Ancestry
39%inclusion12 decks31 decks
34%synergy
Urza's Cave
13%inclusion4 decks31 decks
5%synergy
Polluted Delta
13%inclusion4 decks31 decks
9%synergy
Myriad Landscape
13%inclusion4 decks31 decks
-12%synergy
Abundant Countryside
12%inclusion2 decks17 decks
12%synergy
Fell the Profane
10%inclusion3 decks31 decks
-10%synergy
Command Tower
10%inclusion3 decks31 decks
4%synergy
Agadeem's Awakening
10%inclusion3 decks31 decks
2%synergy
Prismatic Vista
10%inclusion3 decks31 decks
7%synergy
Bloodstained Mire
10%inclusion3 decks31 decks
6%synergy
Gemstone Caverns
10%inclusion3 decks31 decks
5%synergy
Snow-Covered Swamp
10%inclusion3 decks31 decks
3%synergy
Malakir Rebirth
6.5%inclusion2 decks31 decks
-17%synergy
Marsh Flats
6.5%inclusion2 decks31 decks
3%synergy
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