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

Karumonix, the Rat King
Rank #393
11decks
As CommanderAs CardAverage DeckDecks
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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
Mana Artifacts
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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
Three Tree City
82%inclusion9 decks11 decks
77%synergy
Lord Skitter, Sewer King
82%inclusion9 decks11 decks
74%synergy
Ogre Slumlord
82%inclusion9 decks11 decks
72%synergy
Ashcoat of the Shadow Swarm
73%inclusion8 decks11 decks
69%synergy
Herald's Horn
73%inclusion8 decks11 decks
67%synergy
Nykthos, Shrine to Nyx
91%inclusion10 decks11 decks
61%synergy
Top Cards
Jet Medallion
91%inclusion10 decks11 decks
29%synergy
Bontu's Monument
82%inclusion9 decks11 decks
53%synergy
Ayara, First of Locthwain
64%inclusion7 decks11 decks
38%synergy
Lord Skitter's Butcher
64%inclusion7 decks11 decks
60%synergy
Species Specialist
64%inclusion7 decks11 decks
60%synergy
Pack Rat
64%inclusion7 decks11 decks
58%synergy
Crypt Ghast
64%inclusion7 decks11 decks
16%synergy
Blightbelly Rat
64%inclusion7 decks11 decks
60%synergy
Cover of Darkness
64%inclusion7 decks11 decks
61%synergy
Patriarch's Bidding
55%inclusion6 decks11 decks
50%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
Rat King, Pale Piper
67%inclusion2 decks3 decks
63%synergy
Ratcatcher
55%inclusion6 decks11 decks
51%synergy
Rat Colony
55%inclusion6 decks11 decks
49%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
Locust Miser
36%inclusion4 decks11 decks
35%synergy
Persistent Marshstalker
36%inclusion4 decks11 decks
33%synergy
Changeling Outcast
36%inclusion4 decks11 decks
31%synergy
Gnat Miser
36%inclusion4 decks11 decks
34%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
Undercity Dire Rat
30%inclusion3 decks10 decks
28%synergy
Tangled Colony
27%inclusion3 decks11 decks
24%synergy
Filth
27%inclusion3 decks11 decks
25%synergy
Yawgmoth, Thran Physician
27%inclusion3 decks11 decks
17%synergy
Pestilence Rats
27%inclusion3 decks11 decks
25%synergy
Typhoid Rats
27%inclusion3 decks11 decks
24%synergy
Rancid Rats
27%inclusion3 decks11 decks
25%synergy
Patron of the Nezumi
18%inclusion2 decks11 decks
18%synergy
Relentless Rats
18%inclusion2 decks11 decks
16%synergy
Burglar Rat
18%inclusion2 decks11 decks
7%synergy
Blood Artist
18%inclusion2 decks11 decks
-14%synergy
Morbid Opportunist
18%inclusion2 decks11 decks
-6%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
Boggart Trawler
18%inclusion2 decks11 decks
9%synergy
Grim Haruspex
18%inclusion2 decks11 decks
9%synergy
Zulaport Cutthroat
18%inclusion2 decks11 decks
-5%synergy
Swarm of Rats
18%inclusion2 decks11 decks
16%synergy
Chittering Skitterling
18%inclusion2 decks11 decks
17%synergy
Twisted Sewer-Witch
18%inclusion2 decks11 decks
17%synergy
Nezumi Informant
18%inclusion2 decks11 decks
12%synergy
Midnight Reaper
18%inclusion2 decks11 decks
10%synergy
Refurbished Familiar
9.1%inclusion1 decks11 decks
7%synergy
Nezumi Graverobber
9.1%inclusion1 decks11 decks
8%synergy
Midnight Scavengers
9.1%inclusion1 decks11 decks
9%synergy
Graveshifter
9.1%inclusion1 decks11 decks
8%synergy
Rotting Rats
9.1%inclusion1 decks11 decks
6%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
Ruthless Radrat
9.1%inclusion1 decks11 decks
8%synergy
Bloodline Pretender
9.1%inclusion1 decks11 decks
8%synergy
Skullsnatcher
9.1%inclusion1 decks11 decks
8%synergy
Adaptive Automaton
9.1%inclusion1 decks11 decks
8%synergy
Throat Slitter
9.1%inclusion1 decks11 decks
7%synergy
Mikaeus, the Unhallowed
9.1%inclusion1 decks11 decks
1%synergy
Instants
Dark Ritual
45%inclusion5 decks11 decks
-21%synergy
Deadly Rollick
36%inclusion4 decks11 decks
12%synergy
Fell the Profane
36%inclusion4 decks11 decks
17%synergy
Vraska's Fall
36%inclusion4 decks11 decks
33%synergy
Malakir Rebirth
36%inclusion4 decks11 decks
13%synergy
Whisper of the Dross
27%inclusion3 decks11 decks
25%synergy
Anoint with Affliction
27%inclusion3 decks11 decks
27%synergy
Bitter Triumph
27%inclusion3 decks11 decks
17%synergy
Tainted Strike
27%inclusion3 decks11 decks
24%synergy
Hagra Mauling
18%inclusion2 decks11 decks
14%synergy
Village Rites
18%inclusion2 decks11 decks
-7%synergy
Consuming Corruption
18%inclusion2 decks11 decks
2%synergy
Grim Affliction
18%inclusion2 decks11 decks
16%synergy
Defile
18%inclusion2 decks11 decks
-18%synergy
Cabal Ritual
18%inclusion2 decks11 decks
-0%synergy
Darkness
18%inclusion2 decks11 decks
8%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
10%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
Snuff Out
9.1%inclusion1 decks11 decks
-4%synergy
Culling the Weak
9.1%inclusion1 decks11 decks
-8%synergy
Tendrils of Corruption
9.1%inclusion1 decks11 decks
6%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
Feign Death
9.1%inclusion1 decks11 decks
1%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
Drown in Ichor
36%inclusion4 decks11 decks
33%synergy
Plague of Vermin
36%inclusion4 decks11 decks
34%synergy
Splinter's Technique
33%inclusion1 decks3 decks
31%synergy
Torment of Hailfire
27%inclusion3 decks11 decks
12%synergy
Swarmyard Massacre
27%inclusion3 decks11 decks
25%synergy
Agadeem's Awakening
27%inclusion3 decks11 decks
20%synergy
Feed the Swarm
27%inclusion3 decks11 decks
-23%synergy
Sign in Blood
27%inclusion3 decks11 decks
-8%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
Echoing Return
18%inclusion2 decks11 decks
15%synergy
Night's Whisper
18%inclusion2 decks11 decks
-7%synergy
Reanimate
18%inclusion2 decks11 decks
-22%synergy
Toxic Deluge
18%inclusion2 decks11 decks
-19%synergy
Geth's Summons
18%inclusion2 decks11 decks
18%synergy
Crippling Fear
18%inclusion2 decks11 decks
15%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
Read the Bones
9.1%inclusion1 decks11 decks
-7%synergy
Mutilate
9.1%inclusion1 decks11 decks
-7%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
7%synergy
Liturgy of Blood
9.1%inclusion1 decks11 decks
9%synergy
Syphon Mind
9.1%inclusion1 decks11 decks
-3%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
Skullclamp
55%inclusion6 decks11 decks
32%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
42%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
Contagion Engine
27%inclusion3 decks11 decks
25%synergy
Akroma's Memorial
18%inclusion2 decks11 decks
17%synergy
Sensei's Divining Top
9.1%inclusion1 decks11 decks
1%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
Prosthetic Injector
9.1%inclusion1 decks11 decks
9%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
Expedition Map
9.1%inclusion1 decks11 decks
-2%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
Black Market Connections
36%inclusion4 decks11 decks
12%synergy
Phyrexian Arena
36%inclusion4 decks11 decks
-3%synergy
Phyrexian Reclamation
27%inclusion3 decks11 decks
17%synergy
Dictate of Erebos
27%inclusion3 decks11 decks
16%synergy
Oversold Cemetery
27%inclusion3 decks11 decks
22%synergy
Necrogen Communion
27%inclusion3 decks11 decks
26%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
Sothera, the Supervoid
11%inclusion1 decks9 decks
8%synergy
Greed
9.1%inclusion1 decks11 decks
3%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
Snake Cult Initiation
9.1%inclusion1 decks11 decks
9%synergy
Oubliette
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
36%inclusion4 decks11 decks
34%synergy
Liliana of the Dark Realms
18%inclusion2 decks11 decks
4%synergy
Utility Lands
Cabal Coffers
100%inclusion11 decks11 decks
45%synergy
Cabal Stronghold
91%inclusion10 decks11 decks
56%synergy
Urborg, Tomb of Yawgmoth
82%inclusion9 decks11 decks
44%synergy
Phyrexian Tower
73%inclusion8 decks11 decks
47%synergy
Karn's Bastion
64%inclusion7 decks11 decks
60%synergy
Secret Tunnel
40%inclusion2 decks5 decks
39%synergy
Shizo, Death's Storehouse
36%inclusion4 decks11 decks
26%synergy
Crypt of Agadeem
36%inclusion4 decks11 decks
25%synergy
Mudflat Village
36%inclusion4 decks11 decks
34%synergy
Vesuva
27%inclusion3 decks11 decks
24%synergy
Castle Locthwain
27%inclusion3 decks11 decks
10%synergy
Reliquary Tower
27%inclusion3 decks11 decks
-3%synergy
Rogue's Passage
27%inclusion3 decks11 decks
8%synergy
Inkmoth Nexus
18%inclusion2 decks11 decks
17%synergy
Volrath's Stronghold
18%inclusion2 decks11 decks
14%synergy
Minas Morgul, Dark Fortress
18%inclusion2 decks11 decks
15%synergy
Deserted Temple
18%inclusion2 decks11 decks
14%synergy
Takenuma, Abandoned Mire
18%inclusion2 decks11 decks
3%synergy
Access Tunnel
18%inclusion2 decks11 decks
15%synergy
Susur Secundi, Void Altar
13%inclusion1 decks8 decks
5%synergy
Midgar, City of Mako
10%inclusion1 decks10 decks
-1%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
-0%synergy
Spymaster's Vault
9.1%inclusion1 decks11 decks
-1%synergy
Mutavault
9.1%inclusion1 decks11 decks
8%synergy
War Room
9.1%inclusion1 decks11 decks
-7%synergy
Command Beacon
9.1%inclusion1 decks11 decks
1%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
Mana Artifacts
Sol Ring
73%inclusion8 decks11 decks
-13%synergy
Glistening Sphere
55%inclusion6 decks11 decks
53%synergy
Patchwork Banner
55%inclusion6 decks11 decks
50%synergy
The Soul Stone
29%inclusion2 decks7 decks
14%synergy
Gauntlet of Power
27%inclusion3 decks11 decks
24%synergy
Arcane Signet
18%inclusion2 decks11 decks
-43%synergy
Caged Sun
9.1%inclusion1 decks11 decks
-2%synergy
Staff of Compleation
9.1%inclusion1 decks11 decks
7%synergy
Extraplanar Lens
9.1%inclusion1 decks11 decks
4%synergy
Lands
Swamp
91%inclusion10 decks11 decks
-4%synergy
Cavern of Souls
73%inclusion8 decks11 decks
66%synergy
Path of Ancestry
55%inclusion6 decks11 decks
49%synergy
Fell the Profane
36%inclusion4 decks11 decks
17%synergy
Malakir Rebirth
36%inclusion4 decks11 decks
13%synergy
Big Apple, 3 a.m.
33%inclusion1 decks3 decks
31%synergy
Myriad Landscape
27%inclusion3 decks11 decks
2%synergy
Agadeem's Awakening
27%inclusion3 decks11 decks
20%synergy
Hagra Mauling
18%inclusion2 decks11 decks
14%synergy
Urza's Cave
18%inclusion2 decks11 decks
10%synergy
Boggart Trawler
18%inclusion2 decks11 decks
9%synergy
Escape Tunnel
9.1%inclusion1 decks11 decks
8%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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