Karumonix, the Rat King (Commander) - Upgraded Proliferate

Karumonix, the Rat King
Rank #407
3decks
As CommanderAs CardAverage DeckDecks
Bracket
All123
4
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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Utility Lands
Mana Artifacts
Lands
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Demonic Tutor
33%inclusion1 decks3 decks
6%synergy
Vampiric Tutor
33%inclusion1 decks3 decks
12%synergy
Creatures
Burglar Rat
100%inclusion3 decks3 decks
90%synergy
Tangled Colony
100%inclusion3 decks3 decks
97%synergy
Chittering Witch
100%inclusion3 decks3 decks
96%synergy
Voracious Vermin
100%inclusion3 decks3 decks
97%synergy
Blightbelly Rat
100%inclusion3 decks3 decks
97%synergy
Septic Rats
100%inclusion3 decks3 decks
98%synergy
Typhoid Rats
100%inclusion3 decks3 decks
96%synergy
Rancid Rats
100%inclusion3 decks3 decks
98%synergy
Stronghold Rats
100%inclusion3 decks3 decks
97%synergy
Ichor Rats
100%inclusion3 decks3 decks
97%synergy
Rat King, Verminister
100%inclusion1 decks1 decks
97%synergy
Rat King, Pale Piper
100%inclusion1 decks1 decks
96%synergy
Ogre Slumlord
67%inclusion2 decks3 decks
57%synergy
Crypt Rats
67%inclusion2 decks3 decks
62%synergy
Marrow-Gnawer
67%inclusion2 decks3 decks
63%synergy
Gray Merchant of Asphodel
67%inclusion2 decks3 decks
16%synergy
Lord Skitter's Butcher
67%inclusion2 decks3 decks
64%synergy
Pack Rat
67%inclusion2 decks3 decks
61%synergy
Throat Slitter
67%inclusion2 decks3 decks
65%synergy
Zodiac Rat
67%inclusion2 decks3 decks
66%synergy
Persistent Marshstalker
67%inclusion2 decks3 decks
64%synergy
Swarm of Rats
67%inclusion2 decks3 decks
64%synergy
Changeling Outcast
67%inclusion2 decks3 decks
62%synergy
Piper of the Swarm
67%inclusion2 decks3 decks
60%synergy
Nezumi Informant
67%inclusion2 decks3 decks
60%synergy
Ratcatcher
67%inclusion2 decks3 decks
63%synergy
Wave of Rats
67%inclusion2 decks3 decks
65%synergy
Rat Colony
67%inclusion2 decks3 decks
61%synergy
Lord Skitter, Sewer King
67%inclusion2 decks3 decks
59%synergy
Bog Rats
33%inclusion1 decks3 decks
33%synergy
Midnight Scavengers
33%inclusion1 decks3 decks
33%synergy
Rotting Rats
33%inclusion1 decks3 decks
30%synergy
Gnawing Vermin
33%inclusion1 decks3 decks
32%synergy
Ayara, First of Locthwain
33%inclusion1 decks3 decks
8%synergy
Filth
33%inclusion1 decks3 decks
31%synergy
Locust Miser
33%inclusion1 decks3 decks
32%synergy
Engine Rat
33%inclusion1 decks3 decks
32%synergy
Bilious Skulldweller
33%inclusion1 decks3 decks
32%synergy
Graf Rats
33%inclusion1 decks3 decks
33%synergy
Ashcoat of the Shadow Swarm
33%inclusion1 decks3 decks
30%synergy
Nezumi Cutthroat
33%inclusion1 decks3 decks
33%synergy
Nezumi Prowler
33%inclusion1 decks3 decks
32%synergy
Drainpipe Vermin
33%inclusion1 decks3 decks
32%synergy
Pestilence Rats
33%inclusion1 decks3 decks
31%synergy
Gnat Miser
33%inclusion1 decks3 decks
31%synergy
Undercity Dire Rat
33%inclusion1 decks3 decks
32%synergy
Instants
Whisper of the Dross
100%inclusion3 decks3 decks
97%synergy
Vraska's Fall
100%inclusion3 decks3 decks
97%synergy
Dark Ritual
100%inclusion3 decks3 decks
33%synergy
Go for the Throat
67%inclusion2 decks3 decks
44%synergy
Rat Out
67%inclusion2 decks3 decks
65%synergy
Hero's Downfall
33%inclusion1 decks3 decks
27%synergy
Deadly Rollick
33%inclusion1 decks3 decks
8%synergy
Fell the Profane
33%inclusion1 decks3 decks
14%synergy
Grim Affliction
33%inclusion1 decks3 decks
32%synergy
Defile
33%inclusion1 decks3 decks
-2%synergy
Doom Blade
33%inclusion1 decks3 decks
26%synergy
Culling the Weak
33%inclusion1 decks3 decks
15%synergy
Virulent Wound
33%inclusion1 decks3 decks
33%synergy
Murder
33%inclusion1 decks3 decks
24%synergy
Infernal Grasp
33%inclusion1 decks3 decks
8%synergy
Tainted Strike
33%inclusion1 decks3 decks
30%synergy
Foul-Tongue Shriek
33%inclusion1 decks3 decks
32%synergy
Malakir Rebirth
33%inclusion1 decks3 decks
10%synergy
Gravepurge
33%inclusion1 decks3 decks
32%synergy
Nameless Inversion
33%inclusion1 decks3 decks
33%synergy
Tragic Slip
33%inclusion1 decks3 decks
14%synergy
Withering Torment
33%inclusion1 decks3 decks
2%synergy
Sorceries
Infectious Inquiry
100%inclusion3 decks3 decks
97%synergy
Drown in Ichor
100%inclusion3 decks3 decks
96%synergy
Bloodline Bidding
100%inclusion1 decks1 decks
96%synergy
Phyresis Outbreak
67%inclusion2 decks3 decks
65%synergy
Sign in Blood
67%inclusion2 decks3 decks
32%synergy
Vat Emergence
33%inclusion1 decks3 decks
32%synergy
Victimize
33%inclusion1 decks3 decks
6%synergy
Psychic Whorl
33%inclusion1 decks3 decks
33%synergy
Feed the Infection
33%inclusion1 decks3 decks
33%synergy
Unearth
33%inclusion1 decks3 decks
24%synergy
Swarmyard Massacre
33%inclusion1 decks3 decks
31%synergy
Feed the Swarm
33%inclusion1 decks3 decks
-17%synergy
Echoing Return
33%inclusion1 decks3 decks
30%synergy
Read the Bones
33%inclusion1 decks3 decks
18%synergy
Night's Whisper
33%inclusion1 decks3 decks
8%synergy
Caress of Phyrexia
33%inclusion1 decks3 decks
33%synergy
Reanimate
33%inclusion1 decks3 decks
-7%synergy
Syphon Mind
33%inclusion1 decks3 decks
21%synergy
Lab Rats
33%inclusion1 decks3 decks
33%synergy
Kindred Dominance
33%inclusion1 decks3 decks
29%synergy
Damnation
33%inclusion1 decks3 decks
13%synergy
Brainspoil
33%inclusion1 decks3 decks
33%synergy
Grim Tutor
33%inclusion1 decks3 decks
22%synergy
Crippling Fear
33%inclusion1 decks3 decks
31%synergy
Pact of the Serpent
33%inclusion1 decks3 decks
32%synergy
Utility Artifacts
Bontu's Monument
67%inclusion2 decks3 decks
39%synergy
Jet Medallion
67%inclusion2 decks3 decks
5%synergy
Skeleton Key
33%inclusion1 decks3 decks
33%synergy
Contagion Clasp
33%inclusion1 decks3 decks
31%synergy
Contagion Engine
33%inclusion1 decks3 decks
32%synergy
Skullclamp
33%inclusion1 decks3 decks
11%synergy
Banner of Kinship
33%inclusion1 decks3 decks
31%synergy
Vanquisher's Banner
33%inclusion1 decks3 decks
30%synergy
Herald's Horn
33%inclusion1 decks3 decks
28%synergy
The Darkness Crystal
33%inclusion1 decks3 decks
13%synergy
Enchantments
Black Market
33%inclusion1 decks3 decks
13%synergy
Okiba Reckoner Raid
33%inclusion1 decks3 decks
33%synergy
Call of the Ring
33%inclusion1 decks3 decks
31%synergy
Kaya's Ghostform
33%inclusion1 decks3 decks
23%synergy
Oubliette
33%inclusion1 decks3 decks
31%synergy
Black Market Connections
33%inclusion1 decks3 decks
8%synergy
Cover of Darkness
33%inclusion1 decks3 decks
30%synergy
Phyrexian Arena
33%inclusion1 decks3 decks
-6%synergy
Bad Moon
33%inclusion1 decks3 decks
30%synergy
Necrogen Communion
33%inclusion1 decks3 decks
32%synergy
Planeswalkers
Vraska, Betrayal's Sting
67%inclusion2 decks3 decks
64%synergy
Utility Lands
Swarmyard
100%inclusion3 decks3 decks
94%synergy
Karn's Bastion
100%inclusion3 decks3 decks
96%synergy
Mortuary Mire
67%inclusion2 decks3 decks
54%synergy
Witch's Cottage
67%inclusion2 decks3 decks
42%synergy
Cabal Coffers
67%inclusion2 decks3 decks
12%synergy
Mudflat Village
67%inclusion2 decks3 decks
64%synergy
Reliquary Tower
67%inclusion2 decks3 decks
37%synergy
Bojuka Bog
33%inclusion1 decks3 decks
-14%synergy
Cabal Stronghold
33%inclusion1 decks3 decks
-1%synergy
Phyrexian Tower
33%inclusion1 decks3 decks
7%synergy
Crypt of Agadeem
33%inclusion1 decks3 decks
22%synergy
War Room
33%inclusion1 decks3 decks
17%synergy
Minas Morgul, Dark Fortress
33%inclusion1 decks3 decks
30%synergy
Peat Bog
33%inclusion1 decks3 decks
31%synergy
Three Tree City
33%inclusion1 decks3 decks
29%synergy
Urborg, Tomb of Yawgmoth
33%inclusion1 decks3 decks
-4%synergy
Access Tunnel
33%inclusion1 decks3 decks
30%synergy
Everglades
33%inclusion1 decks3 decks
32%synergy
Rogue's Passage
33%inclusion1 decks3 decks
14%synergy
Mana Artifacts
Sol Ring
100%inclusion3 decks3 decks
15%synergy
Arcane Signet
33%inclusion1 decks3 decks
-28%synergy
Staff of Compleation
33%inclusion1 decks3 decks
32%synergy
Glistening Sphere
33%inclusion1 decks3 decks
32%synergy
Patchwork Banner
33%inclusion1 decks3 decks
29%synergy
Throne of Eldraine
33%inclusion1 decks3 decks
24%synergy
Thought Vessel
33%inclusion1 decks3 decks
9%synergy
Lands
Swamp
100%inclusion3 decks3 decks
5%synergy
Path of Ancestry
100%inclusion3 decks3 decks
95%synergy
Escape Tunnel
67%inclusion2 decks3 decks
66%synergy
Fell the Profane
33%inclusion1 decks3 decks
14%synergy
Command Tower
33%inclusion1 decks3 decks
28%synergy
The Seedcore
33%inclusion1 decks3 decks
33%synergy
Myriad Landscape
33%inclusion1 decks3 decks
9%synergy
Mirrex
33%inclusion1 decks3 decks
33%synergy
Cavern of Souls
33%inclusion1 decks3 decks
26%synergy
Malakir Rebirth
33%inclusion1 decks3 decks
10%synergy
Evolving Wilds
33%inclusion1 decks3 decks
29%synergy
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