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

Karumonix, the Rat King
Rank #385
10decks
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Background image for Building Rat Typal With Marrow-Gnawer
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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Marrow-Gnawer
100%inclusion10 decks10 decks
97%synergy
Piper of the Swarm
100%inclusion10 decks10 decks
93%synergy
Swarmyard
90%inclusion9 decks10 decks
84%synergy
Phyresis Outbreak
80%inclusion8 decks10 decks
78%synergy
Lord Skitter, Sewer King
80%inclusion8 decks10 decks
72%synergy
Ogre Slumlord
80%inclusion8 decks10 decks
70%synergy
Cover of Darkness
70%inclusion7 decks10 decks
67%synergy
Lord Skitter's Butcher
70%inclusion7 decks10 decks
67%synergy
Ashcoat of the Shadow Swarm
70%inclusion7 decks10 decks
67%synergy
Three Tree City
70%inclusion7 decks10 decks
65%synergy
Top Cards
Jet Medallion
90%inclusion9 decks10 decks
28%synergy
Pack Rat
70%inclusion7 decks10 decks
64%synergy
Bontu's Monument
70%inclusion7 decks10 decks
42%synergy
Species Specialist
60%inclusion6 decks10 decks
57%synergy
Crypt Ghast
60%inclusion6 decks10 decks
12%synergy
Blightbelly Rat
60%inclusion6 decks10 decks
56%synergy
Herald's Horn
60%inclusion6 decks10 decks
54%synergy
Kindred Dominance
60%inclusion6 decks10 decks
55%synergy
Patriarch's Bidding
50%inclusion5 decks10 decks
46%synergy
Ayara, First of Locthwain
50%inclusion5 decks10 decks
24%synergy
Game Changers
Imperial Seal
10%inclusion1 decks10 decks
3%synergy
Demonic Tutor
10%inclusion1 decks10 decks
-17%synergy
Vampiric Tutor
10%inclusion1 decks10 decks
-11%synergy
Creatures
Persistent Marshstalker
50%inclusion5 decks10 decks
47%synergy
Septic Rats
50%inclusion5 decks10 decks
48%synergy
Rat Colony
50%inclusion5 decks10 decks
44%synergy
Crypt Rats
40%inclusion4 decks10 decks
35%synergy
Tangled Colony
40%inclusion4 decks10 decks
37%synergy
Changeling Outcast
40%inclusion4 decks10 decks
35%synergy
Ratcatcher
40%inclusion4 decks10 decks
37%synergy
Gnat Miser
40%inclusion4 decks10 decks
37%synergy
Nashi, Moon Sage's Scion
40%inclusion4 decks10 decks
36%synergy
Stronghold Rats
40%inclusion4 decks10 decks
36%synergy
Ichor Rats
40%inclusion4 decks10 decks
37%synergy
Undercity Dire Rat
33%inclusion3 decks9 decks
31%synergy
Burglar Rat
30%inclusion3 decks10 decks
19%synergy
Filth
30%inclusion3 decks10 decks
28%synergy
Locust Miser
30%inclusion3 decks10 decks
28%synergy
Yawgmoth, Thran Physician
30%inclusion3 decks10 decks
20%synergy
Nezumi Informant
30%inclusion3 decks10 decks
23%synergy
Typhoid Rats
30%inclusion3 decks10 decks
26%synergy
Patron of the Nezumi
20%inclusion2 decks10 decks
19%synergy
Relentless Rats
20%inclusion2 decks10 decks
18%synergy
Nezumi Graverobber
20%inclusion2 decks10 decks
19%synergy
Rotting Rats
20%inclusion2 decks10 decks
17%synergy
Blood Artist
20%inclusion2 decks10 decks
-12%synergy
Morbid Opportunist
20%inclusion2 decks10 decks
-3%synergy
Roaming Throne
20%inclusion2 decks10 decks
17%synergy
Ink-Eyes, Servant of Oni
20%inclusion2 decks10 decks
17%synergy
Zodiac Rat
20%inclusion2 decks10 decks
20%synergy
Boggart Trawler
20%inclusion2 decks10 decks
11%synergy
Grim Haruspex
20%inclusion2 decks10 decks
11%synergy
Zulaport Cutthroat
20%inclusion2 decks10 decks
-3%synergy
Voracious Vermin
20%inclusion2 decks10 decks
17%synergy
Twisted Sewer-Witch
20%inclusion2 decks10 decks
18%synergy
Drainpipe Vermin
20%inclusion2 decks10 decks
19%synergy
Pestilence Rats
20%inclusion2 decks10 decks
18%synergy
Wave of Rats
20%inclusion2 decks10 decks
18%synergy
Rancid Rats
20%inclusion2 decks10 decks
17%synergy
Midnight Reaper
20%inclusion2 decks10 decks
11%synergy
Refurbished Familiar
10%inclusion1 decks10 decks
8%synergy
Midnight Scavengers
10%inclusion1 decks10 decks
10%synergy
Graveshifter
10%inclusion1 decks10 decks
9%synergy
Plague Myr
10%inclusion1 decks10 decks
9%synergy
Ravenous Rats
10%inclusion1 decks10 decks
8%synergy
Crashing Drawbridge
10%inclusion1 decks10 decks
8%synergy
Gnawing Vermin
10%inclusion1 decks10 decks
8%synergy
Ruthless Radrat
10%inclusion1 decks10 decks
9%synergy
Gray Merchant of Asphodel
10%inclusion1 decks10 decks
-41%synergy
Bloodline Pretender
10%inclusion1 decks10 decks
9%synergy
Skullsnatcher
10%inclusion1 decks10 decks
9%synergy
Adaptive Automaton
10%inclusion1 decks10 decks
9%synergy
Throat Slitter
10%inclusion1 decks10 decks
8%synergy
Instants
Fell the Profane
50%inclusion5 decks10 decks
31%synergy
Dark Ritual
50%inclusion5 decks10 decks
-17%synergy
Deadly Rollick
40%inclusion4 decks10 decks
16%synergy
Vraska's Fall
40%inclusion4 decks10 decks
37%synergy
Malakir Rebirth
40%inclusion4 decks10 decks
17%synergy
Tainted Strike
30%inclusion3 decks10 decks
27%synergy
Hagra Mauling
20%inclusion2 decks10 decks
16%synergy
Whisper of the Dross
20%inclusion2 decks10 decks
17%synergy
Snuff Out
20%inclusion2 decks10 decks
7%synergy
Village Rites
20%inclusion2 decks10 decks
-5%synergy
Consuming Corruption
20%inclusion2 decks10 decks
4%synergy
Anoint with Affliction
20%inclusion2 decks10 decks
19%synergy
Defile
20%inclusion2 decks10 decks
-17%synergy
Cabal Ritual
20%inclusion2 decks10 decks
2%synergy
Bitter Triumph
20%inclusion2 decks10 decks
10%synergy
Plumb the Forbidden
20%inclusion2 decks10 decks
16%synergy
Sudden Spoiling
20%inclusion2 decks10 decks
11%synergy
Force of Despair
10%inclusion1 decks10 decks
2%synergy
Cut Down
10%inclusion1 decks10 decks
6%synergy
Sheoldred's Edict
10%inclusion1 decks10 decks
-5%synergy
Go for the Throat
10%inclusion1 decks10 decks
-13%synergy
Imp's Mischief
10%inclusion1 decks10 decks
-15%synergy
Grim Affliction
10%inclusion1 decks10 decks
8%synergy
Soul Shatter
10%inclusion1 decks10 decks
-2%synergy
Culling the Weak
10%inclusion1 decks10 decks
-6%synergy
Tendrils of Corruption
10%inclusion1 decks10 decks
6%synergy
Darkness
10%inclusion1 decks10 decks
0%synergy
Infernal Grasp
10%inclusion1 decks10 decks
-15%synergy
Foul-Tongue Shriek
10%inclusion1 decks10 decks
8%synergy
Corrupted Conviction
10%inclusion1 decks10 decks
-3%synergy
Dismember
10%inclusion1 decks10 decks
0%synergy
Withering Torment
10%inclusion1 decks10 decks
-21%synergy
Sorceries
Infectious Inquiry
50%inclusion5 decks10 decks
47%synergy
Bloodline Bidding
50%inclusion1 decks2 decks
45%synergy
Agadeem's Awakening
40%inclusion4 decks10 decks
33%synergy
Feed the Swarm
40%inclusion4 decks10 decks
-10%synergy
Toxic Deluge
30%inclusion3 decks10 decks
-7%synergy
Drown in Ichor
30%inclusion3 decks10 decks
26%synergy
Crippling Fear
30%inclusion3 decks10 decks
27%synergy
Pact of the Serpent
30%inclusion3 decks10 decks
28%synergy
Torment of Hailfire
20%inclusion2 decks10 decks
5%synergy
Haunting Voyage
20%inclusion2 decks10 decks
19%synergy
Feed the Infection
20%inclusion2 decks10 decks
19%synergy
Swarmyard Massacre
20%inclusion2 decks10 decks
18%synergy
Night's Whisper
20%inclusion2 decks10 decks
-5%synergy
Reanimate
20%inclusion2 decks10 decks
-20%synergy
Geth's Summons
20%inclusion2 decks10 decks
20%synergy
Sign in Blood
20%inclusion2 decks10 decks
-16%synergy
Plague of Vermin
20%inclusion2 decks10 decks
18%synergy
Diabolic Tutor
10%inclusion1 decks10 decks
-4%synergy
Plague Wind
10%inclusion1 decks10 decks
9%synergy
Victimize
10%inclusion1 decks10 decks
-17%synergy
Revenge of the Rats
10%inclusion1 decks10 decks
7%synergy
Forever Young
10%inclusion1 decks10 decks
8%synergy
Yawgmoth's Will
10%inclusion1 decks10 decks
7%synergy
Bubbling Muck
10%inclusion1 decks10 decks
-6%synergy
Unearth
10%inclusion1 decks10 decks
1%synergy
Echoing Return
10%inclusion1 decks10 decks
7%synergy
Read the Bones
10%inclusion1 decks10 decks
-7%synergy
Blasphemous Edict
10%inclusion1 decks10 decks
-7%synergy
Exsanguinate
10%inclusion1 decks10 decks
-15%synergy
Buried Alive
10%inclusion1 decks10 decks
-2%synergy
In Garruk's Wake
10%inclusion1 decks10 decks
6%synergy
Corrupt
10%inclusion1 decks10 decks
7%synergy
Liturgy of Blood
10%inclusion1 decks10 decks
10%synergy
Syphon Mind
10%inclusion1 decks10 decks
-2%synergy
Insatiable Avarice
10%inclusion1 decks10 decks
-2%synergy
Lab Rats
10%inclusion1 decks10 decks
10%synergy
Eaten Alive
10%inclusion1 decks10 decks
6%synergy
Damnation
10%inclusion1 decks10 decks
-11%synergy
Grim Tutor
10%inclusion1 decks10 decks
-2%synergy
Sanguimancy
10%inclusion1 decks10 decks
10%synergy
Utility Artifacts
Skullclamp
50%inclusion5 decks10 decks
28%synergy
Vanquisher's Banner
50%inclusion5 decks10 decks
46%synergy
Door of Destinies
50%inclusion5 decks10 decks
48%synergy
Thrumming Stone
50%inclusion5 decks10 decks
46%synergy
Chronicle of Victory
50%inclusion1 decks2 decks
47%synergy
Contagion Clasp
30%inclusion3 decks10 decks
28%synergy
Contagion Engine
30%inclusion3 decks10 decks
28%synergy
Ashnod's Altar
30%inclusion3 decks10 decks
10%synergy
Whip of Erebos
30%inclusion3 decks10 decks
19%synergy
Lightning Greaves
30%inclusion3 decks10 decks
-4%synergy
Expedition Map
20%inclusion2 decks10 decks
8%synergy
Akroma's Memorial
20%inclusion2 decks10 decks
19%synergy
Sensei's Divining Top
10%inclusion1 decks10 decks
2%synergy
Wayfarer's Bauble
10%inclusion1 decks10 decks
-5%synergy
Moonsilver Key
10%inclusion1 decks10 decks
9%synergy
Coat of Arms
10%inclusion1 decks10 decks
7%synergy
Scroll Rack
10%inclusion1 decks10 decks
9%synergy
Sword of the Squeak
10%inclusion1 decks10 decks
9%synergy
Sword of Truth and Justice
10%inclusion1 decks10 decks
9%synergy
Stoneforge Masterwork
10%inclusion1 decks10 decks
10%synergy
Shadowspear
10%inclusion1 decks10 decks
6%synergy
Banner of Kinship
10%inclusion1 decks10 decks
8%synergy
Whispersilk Cloak
10%inclusion1 decks10 decks
4%synergy
Cryptic Gateway
10%inclusion1 decks10 decks
10%synergy
Locket of Yesterdays
10%inclusion1 decks10 decks
10%synergy
Eldrazi Monument
10%inclusion1 decks10 decks
8%synergy
Swiftfoot Boots
10%inclusion1 decks10 decks
-21%synergy
Commander's Plate
10%inclusion1 decks10 decks
4%synergy
Dolmen Gate
10%inclusion1 decks10 decks
10%synergy
Altar of Dementia
10%inclusion1 decks10 decks
4%synergy
Obelisk of Urd
10%inclusion1 decks10 decks
9%synergy
Grafted Exoskeleton
10%inclusion1 decks10 decks
9%synergy
Aether Vial
10%inclusion1 decks10 decks
10%synergy
Enchantments
Grave Pact
30%inclusion3 decks10 decks
11%synergy
Dictate of Erebos
30%inclusion3 decks10 decks
19%synergy
Black Market Connections
30%inclusion3 decks10 decks
6%synergy
Oversold Cemetery
30%inclusion3 decks10 decks
25%synergy
The Meathook Massacre
20%inclusion2 decks10 decks
3%synergy
Black Market
20%inclusion2 decks10 decks
-1%synergy
Phyrexian Reclamation
20%inclusion2 decks10 decks
10%synergy
Haunted One
20%inclusion2 decks10 decks
17%synergy
Bastion of Remembrance
20%inclusion2 decks10 decks
3%synergy
Phyrexian Arena
20%inclusion2 decks10 decks
-20%synergy
Bad Moon
20%inclusion2 decks10 decks
17%synergy
Necrogen Communion
20%inclusion2 decks10 decks
18%synergy
Sothera, the Supervoid
13%inclusion1 decks8 decks
10%synergy
Greed
10%inclusion1 decks10 decks
3%synergy
Glistening Oil
10%inclusion1 decks10 decks
9%synergy
Vampiric Rites
10%inclusion1 decks10 decks
4%synergy
Meathook Massacre II
10%inclusion1 decks10 decks
4%synergy
Tribute to Horobi
10%inclusion1 decks10 decks
9%synergy
Phyresis
10%inclusion1 decks10 decks
8%synergy
Intimidation
10%inclusion1 decks10 decks
9%synergy
Funeral Room // Awakening Hall
10%inclusion1 decks10 decks
5%synergy
Attrition
10%inclusion1 decks10 decks
7%synergy
Oubliette
10%inclusion1 decks10 decks
7%synergy
Chthonian Nightmare
10%inclusion1 decks10 decks
7%synergy
Nowhere to Run
10%inclusion1 decks10 decks
7%synergy
Dark Prophecy
10%inclusion1 decks10 decks
6%synergy
Planeswalkers
Vraska, Betrayal's Sting
30%inclusion3 decks10 decks
27%synergy
Liliana of the Dark Realms
20%inclusion2 decks10 decks
6%synergy
Utility Lands
Cabal Coffers
100%inclusion10 decks10 decks
45%synergy
Nykthos, Shrine to Nyx
90%inclusion9 decks10 decks
60%synergy
Urborg, Tomb of Yawgmoth
90%inclusion9 decks10 decks
52%synergy
Cabal Stronghold
80%inclusion8 decks10 decks
45%synergy
Phyrexian Tower
80%inclusion8 decks10 decks
55%synergy
Karn's Bastion
50%inclusion5 decks10 decks
46%synergy
Shizo, Death's Storehouse
40%inclusion4 decks10 decks
30%synergy
Crypt of Agadeem
40%inclusion4 decks10 decks
29%synergy
Vesuva
30%inclusion3 decks10 decks
27%synergy
Inkmoth Nexus
30%inclusion3 decks10 decks
29%synergy
Volrath's Stronghold
30%inclusion3 decks10 decks
26%synergy
Minas Morgul, Dark Fortress
30%inclusion3 decks10 decks
27%synergy
Takenuma, Abandoned Mire
30%inclusion3 decks10 decks
14%synergy
Mudflat Village
30%inclusion3 decks10 decks
27%synergy
Castle Locthwain
30%inclusion3 decks10 decks
13%synergy
Reliquary Tower
30%inclusion3 decks10 decks
0%synergy
Secret Tunnel
25%inclusion1 decks4 decks
24%synergy
Midgar, City of Mako
22%inclusion2 decks9 decks
11%synergy
Mutavault
20%inclusion2 decks10 decks
19%synergy
Deserted Temple
20%inclusion2 decks10 decks
16%synergy
Rogue's Passage
20%inclusion2 decks10 decks
1%synergy
Susur Secundi, Void Altar
14%inclusion1 decks7 decks
7%synergy
Bojuka Bog
10%inclusion1 decks10 decks
-37%synergy
Westvale Abbey
10%inclusion1 decks10 decks
3%synergy
Witch's Clinic
10%inclusion1 decks10 decks
9%synergy
Mortuary Mire
10%inclusion1 decks10 decks
-3%synergy
Barren Moor
10%inclusion1 decks10 decks
0%synergy
Spymaster's Vault
10%inclusion1 decks10 decks
0%synergy
War Room
10%inclusion1 decks10 decks
-6%synergy
Command Beacon
10%inclusion1 decks10 decks
2%synergy
High Market
10%inclusion1 decks10 decks
3%synergy
Terrain Generator
10%inclusion1 decks10 decks
8%synergy
Thespian's Stage
10%inclusion1 decks10 decks
5%synergy
Lake of the Dead
10%inclusion1 decks10 decks
5%synergy
Temple of the False God
10%inclusion1 decks10 decks
2%synergy
Hive of the Eye Tyrant
10%inclusion1 decks10 decks
9%synergy
Access Tunnel
10%inclusion1 decks10 decks
7%synergy
Mana Artifacts
Sol Ring
70%inclusion7 decks10 decks
-16%synergy
Glistening Sphere
60%inclusion6 decks10 decks
59%synergy
Patchwork Banner
50%inclusion5 decks10 decks
46%synergy
The Soul Stone
33%inclusion2 decks6 decks
19%synergy
Arcane Signet
30%inclusion3 decks10 decks
-32%synergy
Gauntlet of Power
30%inclusion3 decks10 decks
27%synergy
Caged Sun
10%inclusion1 decks10 decks
-1%synergy
Staff of Compleation
10%inclusion1 decks10 decks
8%synergy
Mind Stone
10%inclusion1 decks10 decks
-19%synergy
Extraplanar Lens
10%inclusion1 decks10 decks
5%synergy
Lands
Swamp
90%inclusion9 decks10 decks
-5%synergy
Cavern of Souls
70%inclusion7 decks10 decks
63%synergy
Fell the Profane
50%inclusion5 decks10 decks
31%synergy
Path of Ancestry
50%inclusion5 decks10 decks
45%synergy
Agadeem's Awakening
40%inclusion4 decks10 decks
33%synergy
Malakir Rebirth
40%inclusion4 decks10 decks
17%synergy
Myriad Landscape
30%inclusion3 decks10 decks
4%synergy
Urza's Cave
30%inclusion3 decks10 decks
22%synergy
Hagra Mauling
20%inclusion2 decks10 decks
16%synergy
Boggart Trawler
20%inclusion2 decks10 decks
11%synergy
Unclaimed Territory
10%inclusion1 decks10 decks
10%synergy
Horizon of Progress
10%inclusion1 decks10 decks
10%synergy
Verdant Catacombs
10%inclusion1 decks10 decks
7%synergy
Secluded Courtyard
10%inclusion1 decks10 decks
10%synergy
Talon Gates of Madara
10%inclusion1 decks10 decks
8%synergy
Snow-Covered Swamp
10%inclusion1 decks10 decks
3%synergy
Polluted Delta
10%inclusion1 decks10 decks
6%synergy
Bloodstained Mire
10%inclusion1 decks10 decks
6%synergy
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