Karumonix, the Rat King (Commander) - Upgraded Infect

Karumonix, the Rat King
Rank #401
87decks
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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Blightbelly Rat
87%inclusion76 decks87 decks
84%synergy
Marrow-Gnawer
85%inclusion74 decks87 decks
82%synergy
Ichor Rats
82%inclusion71 decks87 decks
79%synergy
Piper of the Swarm
84%inclusion73 decks87 decks
77%synergy
Infectious Inquiry
77%inclusion67 decks87 decks
74%synergy
Drown in Ichor
76%inclusion66 decks87 decks
72%synergy
Ogre Slumlord
80%inclusion70 decks87 decks
71%synergy
Pack Rat
76%inclusion66 decks87 decks
70%synergy
Lord Skitter, Sewer King
76%inclusion66 decks87 decks
68%synergy
Septic Rats
68%inclusion59 decks87 decks
66%synergy
Top Cards
Dark Ritual
75%inclusion65 decks87 decks
8%synergy
Vraska's Fall
69%inclusion60 decks87 decks
66%synergy
Bontu's Monument
66%inclusion57 decks87 decks
37%synergy
Rancid Rats
63%inclusion55 decks87 decks
61%synergy
Lord Skitter's Butcher
61%inclusion53 decks87 decks
58%synergy
Typhoid Rats
60%inclusion52 decks87 decks
56%synergy
Persistent Marshstalker
59%inclusion51 decks87 decks
56%synergy
Jet Medallion
59%inclusion51 decks87 decks
-4%synergy
Whisper of the Dross
59%inclusion51 decks87 decks
56%synergy
Crypt Rats
56%inclusion49 decks87 decks
52%synergy
Game Changers
Demonic Tutor
33%inclusion29 decks87 decks
6%synergy
Vampiric Tutor
21%inclusion18 decks87 decks
-0%synergy
Bolas's Citadel
18%inclusion16 decks87 decks
-10%synergy
Necropotence
6.9%inclusion6 decks87 decks
-7%synergy
Creatures
Tangled Colony
56%inclusion49 decks87 decks
53%synergy
Stronghold Rats
55%inclusion48 decks87 decks
52%synergy
Voracious Vermin
51%inclusion44 decks87 decks
48%synergy
Rat Colony
49%inclusion43 decks87 decks
44%synergy
Ratcatcher
48%inclusion42 decks87 decks
45%synergy
Ashcoat of the Shadow Swarm
46%inclusion40 decks87 decks
42%synergy
Gnat Miser
46%inclusion40 decks87 decks
43%synergy
Burglar Rat
44%inclusion38 decks87 decks
33%synergy
Wave of Rats
37%inclusion32 decks87 decks
35%synergy
Changeling Outcast
34%inclusion30 decks87 decks
29%synergy
Ink-Eyes, Servant of Oni
32%inclusion28 decks87 decks
29%synergy
Swarm of Rats
31%inclusion27 decks87 decks
29%synergy
Chittering Skitterling
31%inclusion27 decks87 decks
30%synergy
Rat King, Pale Piper
29%inclusion13 decks45 decks
25%synergy
Throat Slitter
29%inclusion25 decks87 decks
27%synergy
Ruin Rat
29%inclusion25 decks87 decks
27%synergy
Engine Rat
28%inclusion24 decks87 decks
26%synergy
Nezumi Informant
28%inclusion24 decks87 decks
21%synergy
Nezumi Prowler
26%inclusion23 decks87 decks
25%synergy
Undercity Dire Rat
25%inclusion19 decks75 decks
24%synergy
Chittering Witch
25%inclusion22 decks87 decks
21%synergy
Nezumi Cutthroat
25%inclusion22 decks87 decks
25%synergy
Pestilence Rats
25%inclusion22 decks87 decks
23%synergy
Nashi, Moon Sage's Scion
25%inclusion22 decks87 decks
22%synergy
Rat King, Verminister
24%inclusion12 decks49 decks
21%synergy
Valley Rotcaller
24%inclusion21 decks87 decks
21%synergy
Species Specialist
23%inclusion20 decks87 decks
20%synergy
Ayara, First of Locthwain
22%inclusion19 decks87 decks
-3%synergy
Crypt Ghast
21%inclusion18 decks87 decks
-26%synergy
Locust Miser
20%inclusion17 decks87 decks
18%synergy
Rotting Rats
18%inclusion16 decks87 decks
15%synergy
Gnawing Vermin
18%inclusion16 decks87 decks
17%synergy
Twisted Sewer-Witch
17%inclusion15 decks87 decks
16%synergy
Gray Merchant of Asphodel
16%inclusion14 decks87 decks
-34%synergy
Drainpipe Vermin
16%inclusion14 decks87 decks
15%synergy
Refurbished Familiar
15%inclusion13 decks87 decks
13%synergy
Ravenous Rats
15%inclusion13 decks87 decks
13%synergy
Razortooth Rats
15%inclusion13 decks87 decks
14%synergy
Nezumi Graverobber
14%inclusion12 decks87 decks
13%synergy
Relentless Rats
13%inclusion11 decks87 decks
11%synergy
Bog Rats
11%inclusion10 decks87 decks
11%synergy
Nezumi Bladeblesser
11%inclusion10 decks87 decks
11%synergy
Skullsnatcher
11%inclusion10 decks87 decks
11%synergy
Okiba-Gang Shinobi
11%inclusion10 decks87 decks
11%synergy
Elephant-Rat
10%inclusion7 decks67 decks
10%synergy
Zodiac Rat
10%inclusion9 decks87 decks
10%synergy
Chittering Rats
9.2%inclusion8 decks87 decks
9%synergy
Mukotai Ambusher
9.2%inclusion8 decks87 decks
8%synergy
Sinuous Vermin
9.2%inclusion8 decks87 decks
9%synergy
Yawgmoth, Thran Physician
9.2%inclusion8 decks87 decks
-1%synergy
Instants
Village Rites
40%inclusion35 decks87 decks
15%synergy
Grim Affliction
38%inclusion33 decks87 decks
36%synergy
Defile
34%inclusion30 decks87 decks
-1%synergy
Go for the Throat
33%inclusion29 decks87 decks
11%synergy
Tainted Strike
31%inclusion27 decks87 decks
28%synergy
Withering Torment
26%inclusion23 decks87 decks
-5%synergy
Rat Out
22%inclusion19 decks87 decks
20%synergy
Murder
22%inclusion19 decks87 decks
12%synergy
Fell the Profane
21%inclusion18 decks87 decks
1%synergy
Deadly Dispute
20%inclusion17 decks87 decks
-7%synergy
Infernal Grasp
20%inclusion17 decks87 decks
-6%synergy
Malakir Rebirth
18%inclusion16 decks87 decks
-5%synergy
Corrupted Conviction
16%inclusion14 decks87 decks
4%synergy
Culling the Weak
15%inclusion13 decks87 decks
-3%synergy
Tragic Slip
15%inclusion13 decks87 decks
-4%synergy
Deadly Rollick
14%inclusion12 decks87 decks
-11%synergy
Anoint with Affliction
13%inclusion11 decks87 decks
12%synergy
Cabal Ritual
13%inclusion11 decks87 decks
-6%synergy
Sheoldred's Edict
10%inclusion9 decks87 decks
-5%synergy
Virulent Wound
9.2%inclusion8 decks87 decks
9%synergy
Sudden Spoiling
9.2%inclusion8 decks87 decks
1%synergy
Hero's Downfall
8.0%inclusion7 decks87 decks
1%synergy
Raise the Draugr
8.0%inclusion7 decks87 decks
7%synergy
Unbury
8.0%inclusion4 decks50 decks
7%synergy
Hagra Mauling
6.9%inclusion6 decks87 decks
3%synergy
Bitter Triumph
6.9%inclusion6 decks87 decks
-3%synergy
Feign Death
6.9%inclusion6 decks87 decks
-1%synergy
Consuming Corruption
5.7%inclusion5 decks87 decks
-10%synergy
Doom Blade
5.7%inclusion5 decks87 decks
-1%synergy
Altar's Reap
5.7%inclusion5 decks87 decks
3%synergy
Foul-Tongue Shriek
5.7%inclusion5 decks87 decks
4%synergy
Sorceries
Phyresis Outbreak
53%inclusion46 decks87 decks
51%synergy
Revenge of the Rats
39%inclusion34 decks87 decks
36%synergy
Feed the Swarm
37%inclusion32 decks87 decks
-13%synergy
Kindred Dominance
33%inclusion29 decks87 decks
29%synergy
Crippling Fear
31%inclusion27 decks87 decks
28%synergy
Patriarch's Bidding
29%inclusion25 decks87 decks
25%synergy
Night's Whisper
29%inclusion25 decks87 decks
4%synergy
Sign in Blood
29%inclusion25 decks87 decks
-6%synergy
Bloodline Bidding
22%inclusion11 decks50 decks
18%synergy
Vat Emergence
22%inclusion19 decks87 decks
21%synergy
Swarmyard Massacre
21%inclusion18 decks87 decks
18%synergy
Spread the Sickness
20%inclusion17 decks87 decks
19%synergy
Diabolic Intent
17%inclusion15 decks87 decks
2%synergy
Diabolic Tutor
17%inclusion15 decks87 decks
3%synergy
Bubbling Muck
16%inclusion14 decks87 decks
0%synergy
Unearth
15%inclusion13 decks87 decks
6%synergy
Read the Bones
14%inclusion12 decks87 decks
-2%synergy
Feed the Infection
13%inclusion11 decks87 decks
12%synergy
Echoing Return
13%inclusion11 decks87 decks
10%synergy
Toxic Deluge
13%inclusion11 decks87 decks
-24%synergy
Fell
11%inclusion10 decks87 decks
8%synergy
Reanimate
10%inclusion9 decks87 decks
-30%synergy
Pact of the Serpent
10%inclusion9 decks87 decks
9%synergy
Caress of Phyrexia
9.2%inclusion8 decks87 decks
9%synergy
In Garruk's Wake
9.2%inclusion8 decks87 decks
5%synergy
Geth's Summons
9.2%inclusion8 decks87 decks
9%synergy
Plague of Vermin
9.2%inclusion8 decks87 decks
7%synergy
Blasphemous Edict
8.0%inclusion7 decks87 decks
-8%synergy
Damnation
8.0%inclusion7 decks87 decks
-12%synergy
Grim Tutor
8.0%inclusion7 decks87 decks
-3%synergy
Gruesome Fate
6.9%inclusion6 decks87 decks
5%synergy
Profane Tutor
5.7%inclusion5 decks87 decks
2%synergy
Haunting Voyage
5.7%inclusion5 decks87 decks
5%synergy
Exsanguinate
5.7%inclusion5 decks87 decks
-19%synergy
Insatiable Avarice
5.7%inclusion5 decks87 decks
-5%synergy
Eaten Alive
5.7%inclusion5 decks87 decks
2%synergy
Utility Artifacts
Herald's Horn
48%inclusion42 decks87 decks
43%synergy
Skullclamp
39%inclusion34 decks87 decks
17%synergy
Contagion Clasp
30%inclusion26 decks87 decks
28%synergy
Vanquisher's Banner
28%inclusion24 decks87 decks
24%synergy
Thrumming Stone
18%inclusion16 decks87 decks
14%synergy
Chronicle of Victory
18%inclusion9 decks51 decks
15%synergy
Contagion Engine
17%inclusion15 decks87 decks
16%synergy
Coat of Arms
17%inclusion15 decks87 decks
15%synergy
Swiftfoot Boots
16%inclusion14 decks87 decks
-15%synergy
Door of Destinies
15%inclusion13 decks87 decks
13%synergy
Icon of Ancestry
14%inclusion12 decks87 decks
13%synergy
Whip of Erebos
14%inclusion12 decks87 decks
3%synergy
Lightning Greaves
14%inclusion12 decks87 decks
-20%synergy
Grafted Exoskeleton
11%inclusion10 decks87 decks
10%synergy
The Darkness Crystal
11%inclusion8 decks75 decks
-9%synergy
Banner of Kinship
10%inclusion9 decks87 decks
8%synergy
Gathering Stone
10%inclusion5 decks50 decks
9%synergy
Expedition Map
9.2%inclusion8 decks87 decks
-2%synergy
Sword of Truth and Justice
8.0%inclusion7 decks87 decks
7%synergy
Wayfarer's Bauble
5.7%inclusion5 decks87 decks
-9%synergy
Akroma's Memorial
5.7%inclusion5 decks87 decks
5%synergy
Enchantments
Cover of Darkness
48%inclusion42 decks87 decks
45%synergy
Necrogen Communion
43%inclusion37 decks87 decks
41%synergy
Phyrexian Arena
34%inclusion30 decks87 decks
-5%synergy
Phyresis
21%inclusion18 decks87 decks
19%synergy
Bad Moon
18%inclusion16 decks87 decks
15%synergy
Haunted One
15%inclusion13 decks87 decks
12%synergy
Grave Pact
15%inclusion13 decks87 decks
-5%synergy
Black Market Connections
15%inclusion13 decks87 decks
-10%synergy
Black Market
14%inclusion12 decks87 decks
-7%synergy
Oversold Cemetery
13%inclusion11 decks87 decks
7%synergy
Phyrexian Reclamation
11%inclusion10 decks87 decks
2%synergy
Glistening Oil
9.2%inclusion8 decks87 decks
9%synergy
Intimidation
9.2%inclusion8 decks87 decks
9%synergy
Tribute to Horobi
6.9%inclusion6 decks87 decks
6%synergy
Kaya's Ghostform
6.9%inclusion6 decks87 decks
-3%synergy
Vampiric Rites
5.7%inclusion5 decks87 decks
-0%synergy
Dictate of Erebos
5.7%inclusion5 decks87 decks
-5%synergy
Lord Skitter's Blessing
5.7%inclusion5 decks87 decks
5%synergy
Planeswalkers
Vraska, Betrayal's Sting
45%inclusion39 decks87 decks
42%synergy
Liliana of the Dark Realms
15%inclusion13 decks87 decks
1%synergy
Utility Lands
Swarmyard
71%inclusion62 decks87 decks
66%synergy
Karn's Bastion
63%inclusion55 decks87 decks
60%synergy
Bojuka Bog
62%inclusion54 decks87 decks
15%synergy
Cabal Coffers
55%inclusion48 decks87 decks
0%synergy
Mudflat Village
54%inclusion47 decks87 decks
51%synergy
Rogue's Passage
51%inclusion44 decks87 decks
31%synergy
Witch's Cottage
33%inclusion29 decks87 decks
9%synergy
Three Tree City
32%inclusion28 decks87 decks
27%synergy
Urborg, Tomb of Yawgmoth
31%inclusion27 decks87 decks
-7%synergy
Mortuary Mire
28%inclusion24 decks87 decks
15%synergy
Nykthos, Shrine to Nyx
25%inclusion22 decks87 decks
-4%synergy
Reliquary Tower
23%inclusion20 decks87 decks
-7%synergy
Cabal Stronghold
21%inclusion18 decks87 decks
-13%synergy
Access Tunnel
21%inclusion18 decks87 decks
18%synergy
Phyrexian Tower
17%inclusion15 decks87 decks
-9%synergy
Secret Tunnel
14%inclusion8 decks59 decks
12%synergy
Crypt of Agadeem
13%inclusion11 decks87 decks
1%synergy
Castle Locthwain
13%inclusion11 decks87 decks
-4%synergy
Barren Moor
11%inclusion10 decks87 decks
2%synergy
War Room
11%inclusion10 decks87 decks
-4%synergy
Takenuma, Abandoned Mire
10%inclusion9 decks87 decks
-5%synergy
Shizo, Death's Storehouse
9.2%inclusion8 decks87 decks
-1%synergy
Temple of the False God
9.2%inclusion8 decks87 decks
2%synergy
Desert of the Glorified
8.0%inclusion7 decks87 decks
6%synergy
Inkmoth Nexus
6.9%inclusion6 decks87 decks
6%synergy
The Dross Pits
6.9%inclusion6 decks87 decks
6%synergy
Polluted Mire
6.9%inclusion6 decks87 decks
3%synergy
Memorial to Folly
5.7%inclusion5 decks87 decks
3%synergy
Mutavault
5.7%inclusion5 decks87 decks
5%synergy
Mana Artifacts
Sol Ring
86%inclusion75 decks87 decks
1%synergy
Arcane Signet
49%inclusion43 decks87 decks
-12%synergy
Glistening Sphere
46%inclusion40 decks87 decks
45%synergy
Patchwork Banner
31%inclusion27 decks87 decks
27%synergy
Staff of Compleation
23%inclusion20 decks87 decks
21%synergy
Heraldic Banner
18%inclusion16 decks87 decks
13%synergy
Charcoal Diamond
16%inclusion14 decks87 decks
-6%synergy
Mind Stone
16%inclusion14 decks87 decks
-12%synergy
The Soul Stone
8.7%inclusion6 decks69 decks
-7%synergy
Phyrexian Atlas
8.0%inclusion7 decks87 decks
8%synergy
Thought Vessel
6.9%inclusion6 decks87 decks
-18%synergy
Caged Sun
5.7%inclusion5 decks87 decks
-5%synergy
Lands
Swamp
99%inclusion86 decks87 decks
4%synergy
Path of Ancestry
43%inclusion37 decks87 decks
37%synergy
Cavern of Souls
23%inclusion20 decks87 decks
16%synergy
Fell the Profane
21%inclusion18 decks87 decks
1%synergy
Malakir Rebirth
18%inclusion16 decks87 decks
-5%synergy
Big Apple, 3 a.m.
18%inclusion8 decks45 decks
16%synergy
Evolving Wilds
15%inclusion13 decks87 decks
11%synergy
Command Tower
13%inclusion11 decks87 decks
7%synergy
Myriad Landscape
13%inclusion11 decks87 decks
-12%synergy
Escape Tunnel
8.0%inclusion7 decks87 decks
7%synergy
Hagra Mauling
6.9%inclusion6 decks87 decks
3%synergy
Terramorphic Expanse
5.7%inclusion5 decks87 decks
3%synergy
Ash Barrens
5.7%inclusion5 decks87 decks
4%synergy
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