Karumonix, the Rat King (Commander) - Upgraded +1/+1 Counters

Karumonix, the Rat King
Rank #407
5decks
As CommanderAs CardAverage DeckDecks
Bracket
All
1
234
5
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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Enchantments
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Utility Lands
Mana Artifacts
Lands
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Phyresis Outbreak
100%inclusion5 decks5 decks
98%synergy
Vraska's Fall
100%inclusion5 decks5 decks
97%synergy
Marrow-Gnawer
100%inclusion5 decks5 decks
97%synergy
Drown in Ichor
100%inclusion5 decks5 decks
96%synergy
Pack Rat
100%inclusion5 decks5 decks
94%synergy
Piper of the Swarm
100%inclusion5 decks5 decks
93%synergy
Whisper of the Dross
80%inclusion4 decks5 decks
77%synergy
Infectious Inquiry
80%inclusion4 decks5 decks
77%synergy
Mudflat Village
80%inclusion4 decks5 decks
77%synergy
Ratcatcher
80%inclusion4 decks5 decks
77%synergy
Top Cards
Bontu's Monument
100%inclusion5 decks5 decks
72%synergy
Crypt Rats
80%inclusion4 decks5 decks
76%synergy
Dark Ritual
80%inclusion4 decks5 decks
13%synergy
Lord Skitter, Sewer King
80%inclusion4 decks5 decks
72%synergy
Game Changers
Bolas's Citadel
20%inclusion1 decks5 decks
-8%synergy
Demonic Tutor
20%inclusion1 decks5 decks
-7%synergy
Vampiric Tutor
20%inclusion1 decks5 decks
-1%synergy
Creatures
Ogre Slumlord
60%inclusion3 decks5 decks
50%synergy
Relentless Rats
60%inclusion3 decks5 decks
58%synergy
Persistent Marshstalker
60%inclusion3 decks5 decks
57%synergy
Blightbelly Rat
60%inclusion3 decks5 decks
57%synergy
Pestilence Rats
60%inclusion3 decks5 decks
58%synergy
Septic Rats
60%inclusion3 decks5 decks
58%synergy
Typhoid Rats
60%inclusion3 decks5 decks
56%synergy
Rancid Rats
60%inclusion3 decks5 decks
58%synergy
Rat Colony
60%inclusion3 decks5 decks
54%synergy
Ichor Rats
60%inclusion3 decks5 decks
57%synergy
Tangled Colony
40%inclusion2 decks5 decks
37%synergy
Lord Skitter's Butcher
40%inclusion2 decks5 decks
37%synergy
Swarm of Rats
40%inclusion2 decks5 decks
38%synergy
Voracious Vermin
40%inclusion2 decks5 decks
37%synergy
Valley Rotcaller
40%inclusion2 decks5 decks
37%synergy
Rat King, Verminister
33%inclusion1 decks3 decks
30%synergy
Chittering Rats
20%inclusion1 decks5 decks
19%synergy
Pestilent Syphoner
20%inclusion1 decks5 decks
19%synergy
Burglar Rat
20%inclusion1 decks5 decks
10%synergy
Morbid Opportunist
20%inclusion1 decks5 decks
-4%synergy
Filth
20%inclusion1 decks5 decks
18%synergy
Daggerfang Duo
20%inclusion1 decks5 decks
19%synergy
Infected Vermin
20%inclusion1 decks5 decks
20%synergy
Diseased Vermin
20%inclusion1 decks5 decks
20%synergy
Species Specialist
20%inclusion1 decks5 decks
17%synergy
Chittering Skitterling
20%inclusion1 decks5 decks
19%synergy
Chittering Witch
20%inclusion1 decks5 decks
16%synergy
Corpse Cur
20%inclusion1 decks5 decks
20%synergy
Ashcoat of the Shadow Swarm
20%inclusion1 decks5 decks
16%synergy
Yawgmoth, Thran Physician
20%inclusion1 decks5 decks
10%synergy
Nezumi Informant
20%inclusion1 decks5 decks
14%synergy
Drainpipe Vermin
20%inclusion1 decks5 decks
19%synergy
Wave of Rats
20%inclusion1 decks5 decks
18%synergy
Gnat Miser
20%inclusion1 decks5 decks
17%synergy
Stronghold Rats
20%inclusion1 decks5 decks
17%synergy
Ruin Rat
20%inclusion1 decks5 decks
19%synergy
Instants
Grim Affliction
60%inclusion3 decks5 decks
58%synergy
Defile
60%inclusion3 decks5 decks
25%synergy
Go for the Throat
40%inclusion2 decks5 decks
17%synergy
Village Rites
40%inclusion2 decks5 decks
14%synergy
Rat Out
40%inclusion2 decks5 decks
39%synergy
Deadly Rollick
20%inclusion1 decks5 decks
-5%synergy
Give In to Violence
20%inclusion1 decks5 decks
20%synergy
Anoint with Affliction
20%inclusion1 decks5 decks
19%synergy
Doom Blade
20%inclusion1 decks5 decks
13%synergy
Culling the Weak
20%inclusion1 decks5 decks
2%synergy
Raise the Draugr
20%inclusion1 decks5 decks
19%synergy
Murder
20%inclusion1 decks5 decks
10%synergy
Tainted Strike
20%inclusion1 decks5 decks
17%synergy
Corrupted Conviction
20%inclusion1 decks5 decks
8%synergy
Withering Torment
20%inclusion1 decks5 decks
-11%synergy
Sorceries
Vat Emergence
60%inclusion3 decks5 decks
59%synergy
Revenge of the Rats
60%inclusion3 decks5 decks
57%synergy
Patriarch's Bidding
40%inclusion2 decks5 decks
36%synergy
Feed the Infection
40%inclusion2 decks5 decks
39%synergy
Sign in Blood
40%inclusion2 decks5 decks
5%synergy
Kindred Dominance
40%inclusion2 decks5 decks
35%synergy
Crippling Fear
40%inclusion2 decks5 decks
37%synergy
Worthy Cost
25%inclusion1 decks4 decks
23%synergy
Spread the Sickness
20%inclusion1 decks5 decks
19%synergy
Diabolic Tutor
20%inclusion1 decks5 decks
6%synergy
Pitiless Carnage
20%inclusion1 decks5 decks
19%synergy
Demonic Collusion
20%inclusion1 decks5 decks
20%synergy
Feed the Swarm
20%inclusion1 decks5 decks
-30%synergy
Dread Charge
20%inclusion1 decks5 decks
20%synergy
Distress
20%inclusion1 decks5 decks
20%synergy
Night's Whisper
20%inclusion1 decks5 decks
-5%synergy
Caress of Phyrexia
20%inclusion1 decks5 decks
19%synergy
Eaten Alive
20%inclusion1 decks5 decks
16%synergy
Plague of Vermin
20%inclusion1 decks5 decks
18%synergy
Utility Artifacts
Contagion Clasp
60%inclusion3 decks5 decks
58%synergy
Vanquisher's Banner
60%inclusion3 decks5 decks
56%synergy
Herald's Horn
60%inclusion3 decks5 decks
54%synergy
Skullclamp
40%inclusion2 decks5 decks
18%synergy
Door of Destinies
40%inclusion2 decks5 decks
38%synergy
Thrumming Stone
40%inclusion2 decks5 decks
36%synergy
Jet Medallion
40%inclusion2 decks5 decks
-22%synergy
Icon of Ancestry
20%inclusion1 decks5 decks
19%synergy
Contagion Engine
20%inclusion1 decks5 decks
18%synergy
Coat of Arms
20%inclusion1 decks5 decks
17%synergy
Trailblazer's Boots
20%inclusion1 decks5 decks
18%synergy
Banner of Kinship
20%inclusion1 decks5 decks
18%synergy
Darksteel Forge
20%inclusion1 decks5 decks
19%synergy
Urza's Incubator
20%inclusion1 decks5 decks
18%synergy
Eldrazi Monument
20%inclusion1 decks5 decks
18%synergy
Swiftfoot Boots
20%inclusion1 decks5 decks
-11%synergy
Lightning Greaves
20%inclusion1 decks5 decks
-14%synergy
Obelisk of Urd
20%inclusion1 decks5 decks
19%synergy
Enchantments
Phyrexian Arena
60%inclusion3 decks5 decks
21%synergy
Phyrexian Reclamation
40%inclusion2 decks5 decks
30%synergy
Grave Pact
40%inclusion2 decks5 decks
21%synergy
Cover of Darkness
40%inclusion2 decks5 decks
37%synergy
Bad Moon
40%inclusion2 decks5 decks
37%synergy
Polluted Bonds
20%inclusion1 decks5 decks
18%synergy
Black Market
20%inclusion1 decks5 decks
-0%synergy
The Cruelty of Gix
20%inclusion1 decks5 decks
19%synergy
Cruel Reality
20%inclusion1 decks5 decks
20%synergy
Grievous Wound
20%inclusion1 decks5 decks
18%synergy
Sporogenic Infection
20%inclusion1 decks5 decks
20%synergy
Haunted One
20%inclusion1 decks5 decks
18%synergy
Sanguine Bond
20%inclusion1 decks5 decks
9%synergy
Exquisite Blood
20%inclusion1 decks5 decks
7%synergy
Phyresis
20%inclusion1 decks5 decks
18%synergy
Liliana's Caress
20%inclusion1 decks5 decks
15%synergy
Dauthi Embrace
20%inclusion1 decks5 decks
18%synergy
No Mercy
20%inclusion1 decks5 decks
13%synergy
Black Market Connections
20%inclusion1 decks5 decks
-5%synergy
Oversold Cemetery
20%inclusion1 decks5 decks
15%synergy
Dark Prophecy
20%inclusion1 decks5 decks
16%synergy
Necrogen Communion
20%inclusion1 decks5 decks
18%synergy
Planeswalkers
Vraska, Betrayal's Sting
40%inclusion2 decks5 decks
37%synergy
Liliana of the Dark Realms
20%inclusion1 decks5 decks
6%synergy
Liliana Vess
20%inclusion1 decks5 decks
17%synergy
Utility Lands
Karn's Bastion
80%inclusion4 decks5 decks
76%synergy
Bojuka Bog
60%inclusion3 decks5 decks
13%synergy
Swarmyard
60%inclusion3 decks5 decks
54%synergy
Cabal Coffers
60%inclusion3 decks5 decks
5%synergy
Mortuary Mire
40%inclusion2 decks5 decks
27%synergy
Witch's Cottage
40%inclusion2 decks5 decks
16%synergy
Urborg, Tomb of Yawgmoth
40%inclusion2 decks5 decks
2%synergy
Rogue's Passage
40%inclusion2 decks5 decks
21%synergy
Lotus Field
20%inclusion1 decks5 decks
20%synergy
Urza's Tower
20%inclusion1 decks5 decks
20%synergy
Urza's Mine
20%inclusion1 decks5 decks
20%synergy
Nykthos, Shrine to Nyx
20%inclusion1 decks5 decks
-10%synergy
Reliquary Tower
20%inclusion1 decks5 decks
-9%synergy
Three Tree City
20%inclusion1 decks5 decks
15%synergy
Urza's Power Plant
20%inclusion1 decks5 decks
20%synergy
Access Tunnel
20%inclusion1 decks5 decks
17%synergy
Mana Artifacts
Arcane Signet
80%inclusion4 decks5 decks
19%synergy
Patchwork Banner
80%inclusion4 decks5 decks
76%synergy
Sol Ring
80%inclusion4 decks5 decks
-5%synergy
Glistening Sphere
40%inclusion2 decks5 decks
39%synergy
Caged Sun
20%inclusion1 decks5 decks
10%synergy
Everflowing Chalice
20%inclusion1 decks5 decks
15%synergy
Gauntlet of Power
20%inclusion1 decks5 decks
17%synergy
Charcoal Diamond
20%inclusion1 decks5 decks
-2%synergy
Heraldic Banner
20%inclusion1 decks5 decks
15%synergy
Mind Stone
20%inclusion1 decks5 decks
-8%synergy
Lands
Swamp
100%inclusion5 decks5 decks
5%synergy
Command Tower
40%inclusion2 decks5 decks
34%synergy
Myriad Landscape
40%inclusion2 decks5 decks
16%synergy
Path of Ancestry
40%inclusion2 decks5 decks
35%synergy
Big Apple, 3 a.m.
33%inclusion1 decks3 decks
32%synergy
Escape Tunnel
20%inclusion1 decks5 decks
19%synergy
Terramorphic Expanse
20%inclusion1 decks5 decks
17%synergy
Cavern of Souls
20%inclusion1 decks5 decks
13%synergy
Evolving Wilds
20%inclusion1 decks5 decks
16%synergy
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