Karumonix, the Rat King (Commander) - Expensive Core Infect

Karumonix, the Rat King
Rank #382
11decks
As CommanderAs CardAverage DeckDecks
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Budget
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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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Decorum Dissertation
100%inclusion1 decks1 decks
95%synergy
High Synergy Cards
Marrow-Gnawer
100%inclusion11 decks11 decks
97%synergy
Piper of the Swarm
100%inclusion11 decks11 decks
93%synergy
Swarmyard
91%inclusion10 decks11 decks
85%synergy
Phyresis Outbreak
82%inclusion9 decks11 decks
80%synergy
Lord Skitter, Sewer King
82%inclusion9 decks11 decks
73%synergy
Ogre Slumlord
82%inclusion9 decks11 decks
72%synergy
Ashcoat of the Shadow Swarm
73%inclusion8 decks11 decks
69%synergy
Three Tree City
73%inclusion8 decks11 decks
68%synergy
Nykthos, Shrine to Nyx
91%inclusion10 decks11 decks
61%synergy
Cover of Darkness
64%inclusion7 decks11 decks
61%synergy
Top Cards
Jet Medallion
91%inclusion10 decks11 decks
29%synergy
Bontu's Monument
73%inclusion8 decks11 decks
44%synergy
Lord Skitter's Butcher
64%inclusion7 decks11 decks
60%synergy
Pack Rat
64%inclusion7 decks11 decks
58%synergy
Blightbelly Rat
64%inclusion7 decks11 decks
60%synergy
Herald's Horn
64%inclusion7 decks11 decks
58%synergy
Patriarch's Bidding
55%inclusion6 decks11 decks
50%synergy
Ayara, First of Locthwain
55%inclusion6 decks11 decks
29%synergy
Species Specialist
55%inclusion6 decks11 decks
51%synergy
Skullclamp
55%inclusion6 decks11 decks
32%synergy
Game Changers
Imperial Seal
9.1%inclusion1 decks11 decks
2%synergy
Demonic Tutor
9.1%inclusion1 decks11 decks
-18%synergy
Vampiric Tutor
9.1%inclusion1 decks11 decks
-12%synergy
Creatures
Crypt Ghast
55%inclusion6 decks11 decks
7%synergy
Rat Colony
55%inclusion6 decks11 decks
49%synergy
Persistent Marshstalker
45%inclusion5 decks11 decks
42%synergy
Ratcatcher
45%inclusion5 decks11 decks
42%synergy
Septic Rats
45%inclusion5 decks11 decks
44%synergy
Nashi, Moon Sage's Scion
45%inclusion5 decks11 decks
42%synergy
Crypt Rats
36%inclusion4 decks11 decks
32%synergy
Tangled Colony
36%inclusion4 decks11 decks
33%synergy
Yawgmoth, Thran Physician
36%inclusion4 decks11 decks
26%synergy
Changeling Outcast
36%inclusion4 decks11 decks
31%synergy
Gnat Miser
36%inclusion4 decks11 decks
33%synergy
Stronghold Rats
36%inclusion4 decks11 decks
33%synergy
Ichor Rats
36%inclusion4 decks11 decks
33%synergy
Rat King, Verminister
33%inclusion1 decks3 decks
30%synergy
Rat King, Pale Piper
33%inclusion1 decks3 decks
29%synergy
Undercity Dire Rat
30%inclusion3 decks10 decks
28%synergy
Burglar Rat
27%inclusion3 decks11 decks
16%synergy
Filth
27%inclusion3 decks11 decks
25%synergy
Locust Miser
27%inclusion3 decks11 decks
26%synergy
Nezumi Informant
27%inclusion3 decks11 decks
21%synergy
Typhoid Rats
27%inclusion3 decks11 decks
24%synergy
Patron of the Nezumi
18%inclusion2 decks11 decks
18%synergy
Relentless Rats
18%inclusion2 decks11 decks
16%synergy
Nezumi Graverobber
18%inclusion2 decks11 decks
17%synergy
Rotting Rats
18%inclusion2 decks11 decks
15%synergy
Blood Artist
18%inclusion2 decks11 decks
-14%synergy
Morbid Opportunist
18%inclusion2 decks11 decks
-5%synergy
Roaming Throne
18%inclusion2 decks11 decks
15%synergy
Gray Merchant of Asphodel
18%inclusion2 decks11 decks
-33%synergy
Ink-Eyes, Servant of Oni
18%inclusion2 decks11 decks
15%synergy
Zodiac Rat
18%inclusion2 decks11 decks
18%synergy
Boggart Trawler
18%inclusion2 decks11 decks
9%synergy
Grim Haruspex
18%inclusion2 decks11 decks
9%synergy
Zulaport Cutthroat
18%inclusion2 decks11 decks
-5%synergy
Voracious Vermin
18%inclusion2 decks11 decks
15%synergy
Twisted Sewer-Witch
18%inclusion2 decks11 decks
17%synergy
Drainpipe Vermin
18%inclusion2 decks11 decks
17%synergy
Pestilence Rats
18%inclusion2 decks11 decks
16%synergy
Wave of Rats
18%inclusion2 decks11 decks
16%synergy
Rancid Rats
18%inclusion2 decks11 decks
16%synergy
Midnight Reaper
18%inclusion2 decks11 decks
10%synergy
Refurbished Familiar
9.1%inclusion1 decks11 decks
7%synergy
Midnight Scavengers
9.1%inclusion1 decks11 decks
9%synergy
Graveshifter
9.1%inclusion1 decks11 decks
8%synergy
Plague Myr
9.1%inclusion1 decks11 decks
8%synergy
Ravenous Rats
9.1%inclusion1 decks11 decks
7%synergy
Crashing Drawbridge
9.1%inclusion1 decks11 decks
7%synergy
Gnawing Vermin
9.1%inclusion1 decks11 decks
8%synergy
Ruthless Radrat
9.1%inclusion1 decks11 decks
8%synergy
Bloodline Pretender
9.1%inclusion1 decks11 decks
8%synergy
Instants
Deadly Rollick
45%inclusion5 decks11 decks
21%synergy
Fell the Profane
45%inclusion5 decks11 decks
27%synergy
Dark Ritual
45%inclusion5 decks11 decks
-21%synergy
Vraska's Fall
36%inclusion4 decks11 decks
33%synergy
Malakir Rebirth
36%inclusion4 decks11 decks
13%synergy
Consuming Corruption
27%inclusion3 decks11 decks
12%synergy
Bitter Triumph
27%inclusion3 decks11 decks
18%synergy
Tainted Strike
27%inclusion3 decks11 decks
24%synergy
Hagra Mauling
18%inclusion2 decks11 decks
14%synergy
Whisper of the Dross
18%inclusion2 decks11 decks
15%synergy
Snuff Out
18%inclusion2 decks11 decks
5%synergy
Village Rites
18%inclusion2 decks11 decks
-7%synergy
Anoint with Affliction
18%inclusion2 decks11 decks
18%synergy
Defile
18%inclusion2 decks11 decks
-18%synergy
Cabal Ritual
18%inclusion2 decks11 decks
0%synergy
Foul-Tongue Shriek
18%inclusion2 decks11 decks
16%synergy
Plumb the Forbidden
18%inclusion2 decks11 decks
14%synergy
Sudden Spoiling
18%inclusion2 decks11 decks
9%synergy
Force of Despair
9.1%inclusion1 decks11 decks
1%synergy
Fatal Push
9.1%inclusion1 decks11 decks
6%synergy
Cut Down
9.1%inclusion1 decks11 decks
5%synergy
Sheoldred's Edict
9.1%inclusion1 decks11 decks
-6%synergy
Go for the Throat
9.1%inclusion1 decks11 decks
-14%synergy
Imp's Mischief
9.1%inclusion1 decks11 decks
-16%synergy
Grim Affliction
9.1%inclusion1 decks11 decks
7%synergy
Soul Shatter
9.1%inclusion1 decks11 decks
-3%synergy
Culling the Weak
9.1%inclusion1 decks11 decks
-7%synergy
Tendrils of Corruption
9.1%inclusion1 decks11 decks
6%synergy
Darkness
9.1%inclusion1 decks11 decks
-1%synergy
Infernal Grasp
9.1%inclusion1 decks11 decks
-16%synergy
Corrupted Conviction
9.1%inclusion1 decks11 decks
-3%synergy
Curtains' Call
9.1%inclusion1 decks11 decks
7%synergy
Dismember
9.1%inclusion1 decks11 decks
-1%synergy
Withering Torment
9.1%inclusion1 decks11 decks
-22%synergy
Sorceries
Bloodline Bidding
67%inclusion2 decks3 decks
62%synergy
Infectious Inquiry
55%inclusion6 decks11 decks
52%synergy
Kindred Dominance
55%inclusion6 decks11 decks
50%synergy
Agadeem's Awakening
36%inclusion4 decks11 decks
29%synergy
Feed the Swarm
36%inclusion4 decks11 decks
-14%synergy
Torment of Hailfire
27%inclusion3 decks11 decks
12%synergy
Night's Whisper
27%inclusion3 decks11 decks
3%synergy
Toxic Deluge
27%inclusion3 decks11 decks
-9%synergy
Sign in Blood
27%inclusion3 decks11 decks
-8%synergy
Drown in Ichor
27%inclusion3 decks11 decks
23%synergy
Crippling Fear
27%inclusion3 decks11 decks
24%synergy
Plague of Vermin
27%inclusion3 decks11 decks
25%synergy
Pact of the Serpent
27%inclusion3 decks11 decks
26%synergy
Forever Young
18%inclusion2 decks11 decks
17%synergy
Haunting Voyage
18%inclusion2 decks11 decks
17%synergy
Feed the Infection
18%inclusion2 decks11 decks
18%synergy
Swarmyard Massacre
18%inclusion2 decks11 decks
16%synergy
Echoing Return
18%inclusion2 decks11 decks
15%synergy
Read the Bones
18%inclusion2 decks11 decks
1%synergy
Reanimate
18%inclusion2 decks11 decks
-22%synergy
Geth's Summons
18%inclusion2 decks11 decks
18%synergy
Diabolic Tutor
9.1%inclusion1 decks11 decks
-5%synergy
Plague Wind
9.1%inclusion1 decks11 decks
8%synergy
Victimize
9.1%inclusion1 decks11 decks
-18%synergy
Revenge of the Rats
9.1%inclusion1 decks11 decks
6%synergy
Yawgmoth's Will
9.1%inclusion1 decks11 decks
6%synergy
Bubbling Muck
9.1%inclusion1 decks11 decks
-6%synergy
Unearth
9.1%inclusion1 decks11 decks
0%synergy
Mutilate
9.1%inclusion1 decks11 decks
-8%synergy
Blasphemous Edict
9.1%inclusion1 decks11 decks
-7%synergy
Exsanguinate
9.1%inclusion1 decks11 decks
-16%synergy
Buried Alive
9.1%inclusion1 decks11 decks
-3%synergy
In Garruk's Wake
9.1%inclusion1 decks11 decks
5%synergy
Corrupt
9.1%inclusion1 decks11 decks
6%synergy
Liturgy of Blood
9.1%inclusion1 decks11 decks
9%synergy
Syphon Mind
9.1%inclusion1 decks11 decks
-3%synergy
Insatiable Avarice
9.1%inclusion1 decks11 decks
-2%synergy
Lab Rats
9.1%inclusion1 decks11 decks
9%synergy
Eaten Alive
9.1%inclusion1 decks11 decks
6%synergy
Damnation
9.1%inclusion1 decks11 decks
-11%synergy
Grim Tutor
9.1%inclusion1 decks11 decks
-2%synergy
Sanguimancy
9.1%inclusion1 decks11 decks
9%synergy
Utility Artifacts
Chronicle of Victory
67%inclusion2 decks3 decks
64%synergy
Door of Destinies
55%inclusion6 decks11 decks
52%synergy
Thrumming Stone
55%inclusion6 decks11 decks
50%synergy
Vanquisher's Banner
45%inclusion5 decks11 decks
41%synergy
Contagion Engine
36%inclusion4 decks11 decks
35%synergy
Ashnod's Altar
36%inclusion4 decks11 decks
17%synergy
Whip of Erebos
36%inclusion4 decks11 decks
25%synergy
Lightning Greaves
36%inclusion4 decks11 decks
3%synergy
Contagion Clasp
27%inclusion3 decks11 decks
25%synergy
Expedition Map
18%inclusion2 decks11 decks
6%synergy
Akroma's Memorial
18%inclusion2 decks11 decks
17%synergy
Sensei's Divining Top
9.1%inclusion1 decks11 decks
1%synergy
Wayfarer's Bauble
9.1%inclusion1 decks11 decks
-6%synergy
Moonsilver Key
9.1%inclusion1 decks11 decks
8%synergy
Coat of Arms
9.1%inclusion1 decks11 decks
6%synergy
Scroll Rack
9.1%inclusion1 decks11 decks
9%synergy
Sword of the Squeak
9.1%inclusion1 decks11 decks
9%synergy
Sword of Truth and Justice
9.1%inclusion1 decks11 decks
8%synergy
Stoneforge Masterwork
9.1%inclusion1 decks11 decks
9%synergy
Shadowspear
9.1%inclusion1 decks11 decks
5%synergy
Banner of Kinship
9.1%inclusion1 decks11 decks
7%synergy
Whispersilk Cloak
9.1%inclusion1 decks11 decks
3%synergy
Cryptic Gateway
9.1%inclusion1 decks11 decks
9%synergy
Locket of Yesterdays
9.1%inclusion1 decks11 decks
9%synergy
Eldrazi Monument
9.1%inclusion1 decks11 decks
7%synergy
Swiftfoot Boots
9.1%inclusion1 decks11 decks
-22%synergy
Commander's Plate
9.1%inclusion1 decks11 decks
3%synergy
Dolmen Gate
9.1%inclusion1 decks11 decks
9%synergy
Altar of Dementia
9.1%inclusion1 decks11 decks
4%synergy
Obelisk of Urd
9.1%inclusion1 decks11 decks
8%synergy
Grafted Exoskeleton
9.1%inclusion1 decks11 decks
8%synergy
Aether Vial
9.1%inclusion1 decks11 decks
9%synergy
Enchantments
Grave Pact
36%inclusion4 decks11 decks
17%synergy
Phyrexian Reclamation
27%inclusion3 decks11 decks
17%synergy
Dictate of Erebos
27%inclusion3 decks11 decks
16%synergy
Black Market Connections
27%inclusion3 decks11 decks
3%synergy
Oversold Cemetery
27%inclusion3 decks11 decks
22%synergy
Phyrexian Arena
27%inclusion3 decks11 decks
-12%synergy
The Meathook Massacre
18%inclusion2 decks11 decks
1%synergy
Black Market
18%inclusion2 decks11 decks
-3%synergy
Haunted One
18%inclusion2 decks11 decks
16%synergy
Bastion of Remembrance
18%inclusion2 decks11 decks
1%synergy
Bad Moon
18%inclusion2 decks11 decks
15%synergy
Necrogen Communion
18%inclusion2 decks11 decks
16%synergy
Sothera, the Supervoid
11%inclusion1 decks9 decks
8%synergy
Greed
9.1%inclusion1 decks11 decks
2%synergy
Glistening Oil
9.1%inclusion1 decks11 decks
8%synergy
Vampiric Rites
9.1%inclusion1 decks11 decks
3%synergy
Meathook Massacre II
9.1%inclusion1 decks11 decks
3%synergy
Tribute to Horobi
9.1%inclusion1 decks11 decks
8%synergy
Phyresis
9.1%inclusion1 decks11 decks
7%synergy
Intimidation
9.1%inclusion1 decks11 decks
9%synergy
Funeral Room // Awakening Hall
9.1%inclusion1 decks11 decks
5%synergy
Attrition
9.1%inclusion1 decks11 decks
6%synergy
Oubliette
9.1%inclusion1 decks11 decks
6%synergy
Chthonian Nightmare
9.1%inclusion1 decks11 decks
6%synergy
Nowhere to Run
9.1%inclusion1 decks11 decks
6%synergy
Dark Prophecy
9.1%inclusion1 decks11 decks
5%synergy
Planeswalkers
Vraska, Betrayal's Sting
27%inclusion3 decks11 decks
25%synergy
Liliana of the Dark Realms
18%inclusion2 decks11 decks
4%synergy
Utility Lands
Cabal Coffers
100%inclusion11 decks11 decks
45%synergy
Cabal Stronghold
82%inclusion9 decks11 decks
47%synergy
Phyrexian Tower
82%inclusion9 decks11 decks
56%synergy
Urborg, Tomb of Yawgmoth
82%inclusion9 decks11 decks
44%synergy
Karn's Bastion
55%inclusion6 decks11 decks
51%synergy
Shizo, Death's Storehouse
36%inclusion4 decks11 decks
26%synergy
Crypt of Agadeem
36%inclusion4 decks11 decks
25%synergy
Vesuva
27%inclusion3 decks11 decks
24%synergy
Inkmoth Nexus
27%inclusion3 decks11 decks
26%synergy
Volrath's Stronghold
27%inclusion3 decks11 decks
24%synergy
Minas Morgul, Dark Fortress
27%inclusion3 decks11 decks
24%synergy
Takenuma, Abandoned Mire
27%inclusion3 decks11 decks
12%synergy
Mudflat Village
27%inclusion3 decks11 decks
25%synergy
Castle Locthwain
27%inclusion3 decks11 decks
10%synergy
Reliquary Tower
27%inclusion3 decks11 decks
-3%synergy
Midgar, City of Mako
20%inclusion2 decks10 decks
9%synergy
Secret Tunnel
20%inclusion1 decks5 decks
19%synergy
Mutavault
18%inclusion2 decks11 decks
17%synergy
Deserted Temple
18%inclusion2 decks11 decks
14%synergy
Rogue's Passage
18%inclusion2 decks11 decks
-1%synergy
Susur Secundi, Void Altar
13%inclusion1 decks8 decks
5%synergy
Bojuka Bog
9.1%inclusion1 decks11 decks
-38%synergy
Westvale Abbey
9.1%inclusion1 decks11 decks
3%synergy
Witch's Clinic
9.1%inclusion1 decks11 decks
8%synergy
Mortuary Mire
9.1%inclusion1 decks11 decks
-4%synergy
Barren Moor
9.1%inclusion1 decks11 decks
-1%synergy
Spymaster's Vault
9.1%inclusion1 decks11 decks
0%synergy
War Room
9.1%inclusion1 decks11 decks
-7%synergy
Command Beacon
9.1%inclusion1 decks11 decks
1%synergy
High Market
9.1%inclusion1 decks11 decks
2%synergy
Terrain Generator
9.1%inclusion1 decks11 decks
7%synergy
Thespian's Stage
9.1%inclusion1 decks11 decks
4%synergy
Lake of the Dead
9.1%inclusion1 decks11 decks
4%synergy
Temple of the False God
9.1%inclusion1 decks11 decks
1%synergy
Hive of the Eye Tyrant
9.1%inclusion1 decks11 decks
8%synergy
Access Tunnel
9.1%inclusion1 decks11 decks
6%synergy
Mana Artifacts
Sol Ring
73%inclusion8 decks11 decks
-13%synergy
Glistening Sphere
55%inclusion6 decks11 decks
53%synergy
Patchwork Banner
45%inclusion5 decks11 decks
41%synergy
The Soul Stone
29%inclusion2 decks7 decks
14%synergy
Arcane Signet
27%inclusion3 decks11 decks
-34%synergy
Gauntlet of Power
27%inclusion3 decks11 decks
24%synergy
Caged Sun
9.1%inclusion1 decks11 decks
-2%synergy
Staff of Compleation
9.1%inclusion1 decks11 decks
7%synergy
Mind Stone
9.1%inclusion1 decks11 decks
-20%synergy
Extraplanar Lens
9.1%inclusion1 decks11 decks
4%synergy
Lands
Swamp
91%inclusion10 decks11 decks
-4%synergy
Cavern of Souls
64%inclusion7 decks11 decks
57%synergy
Path of Ancestry
55%inclusion6 decks11 decks
49%synergy
Fell the Profane
45%inclusion5 decks11 decks
27%synergy
Agadeem's Awakening
36%inclusion4 decks11 decks
29%synergy
Malakir Rebirth
36%inclusion4 decks11 decks
13%synergy
Myriad Landscape
27%inclusion3 decks11 decks
2%synergy
Urza's Cave
27%inclusion3 decks11 decks
19%synergy
Hagra Mauling
18%inclusion2 decks11 decks
14%synergy
Boggart Trawler
18%inclusion2 decks11 decks
9%synergy
Unclaimed Territory
9.1%inclusion1 decks11 decks
9%synergy
Horizon of Progress
9.1%inclusion1 decks11 decks
9%synergy
Verdant Catacombs
9.1%inclusion1 decks11 decks
6%synergy
Secluded Courtyard
9.1%inclusion1 decks11 decks
9%synergy
Talon Gates of Madara
9.1%inclusion1 decks11 decks
7%synergy
Snow-Covered Swamp
9.1%inclusion1 decks11 decks
3%synergy
Polluted Delta
9.1%inclusion1 decks11 decks
5%synergy
Bloodstained Mire
9.1%inclusion1 decks11 decks
5%synergy
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