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

Karumonix, the Rat King
Rank #412
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
67%inclusion2 decks3 decks
40%synergy
Vampiric Tutor
67%inclusion2 decks3 decks
46%synergy
Bolas's Citadel
33%inclusion1 decks3 decks
6%synergy
Creatures
Blightbelly Rat
100%inclusion3 decks3 decks
97%synergy
Septic Rats
100%inclusion3 decks3 decks
98%synergy
Ichor Rats
100%inclusion3 decks3 decks
97%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
Plague Myr
67%inclusion2 decks3 decks
65%synergy
Pack Rat
67%inclusion2 decks3 decks
61%synergy
Throat Slitter
67%inclusion2 decks3 decks
65%synergy
Chittering Witch
67%inclusion2 decks3 decks
62%synergy
Voracious Vermin
67%inclusion2 decks3 decks
64%synergy
Valley Rotcaller
67%inclusion2 decks3 decks
64%synergy
Ashcoat of the Shadow Swarm
67%inclusion2 decks3 decks
63%synergy
Piper of the Swarm
67%inclusion2 decks3 decks
60%synergy
Ratcatcher
67%inclusion2 decks3 decks
63%synergy
Lord Skitter, Sewer King
67%inclusion2 decks3 decks
59%synergy
Rat King, Verminister
50%inclusion1 decks2 decks
47%synergy
Rat King, Pale Piper
50%inclusion1 decks2 decks
46%synergy
Phyrexian Juggernaut
33%inclusion1 decks3 decks
33%synergy
Plague Stinger
33%inclusion1 decks3 decks
32%synergy
Core Prowler
33%inclusion1 decks3 decks
33%synergy
Nezumi Graverobber
33%inclusion1 decks3 decks
32%synergy
Dread Presence
33%inclusion1 decks3 decks
20%synergy
Whispering Specter
33%inclusion1 decks3 decks
33%synergy
Pestilent Syphoner
33%inclusion1 decks3 decks
33%synergy
Rotting Rats
33%inclusion1 decks3 decks
30%synergy
Reaper of Sheoldred
33%inclusion1 decks3 decks
33%synergy
Corrosive Mentor
33%inclusion1 decks3 decks
32%synergy
Ayara, First of Locthwain
33%inclusion1 decks3 decks
8%synergy
Gray Merchant of Asphodel
33%inclusion1 decks3 decks
-17%synergy
Tangled Colony
33%inclusion1 decks3 decks
30%synergy
Nezumi Bladeblesser
33%inclusion1 decks3 decks
33%synergy
Phyrexian Obliterator
33%inclusion1 decks3 decks
22%synergy
Lord Skitter's Butcher
33%inclusion1 decks3 decks
30%synergy
Flensermite
33%inclusion1 decks3 decks
33%synergy
Necroskitter
33%inclusion1 decks3 decks
31%synergy
Ink-Eyes, Servant of Oni
33%inclusion1 decks3 decks
30%synergy
Persistent Marshstalker
33%inclusion1 decks3 decks
30%synergy
Engine Rat
33%inclusion1 decks3 decks
32%synergy
Swarm of Rats
33%inclusion1 decks3 decks
31%synergy
Bilious Skulldweller
33%inclusion1 decks3 decks
32%synergy
Ichorclaw Myr
33%inclusion1 decks3 decks
33%synergy
Chittering Skitterling
33%inclusion1 decks3 decks
32%synergy
Corpse Cur
33%inclusion1 decks3 decks
33%synergy
Phyrexian Crusader
33%inclusion1 decks3 decks
32%synergy
Yawgmoth, Thran Physician
33%inclusion1 decks3 decks
23%synergy
Crypt Ghast
33%inclusion1 decks3 decks
-13%synergy
Changeling Outcast
33%inclusion1 decks3 decks
28%synergy
Flesh-Eater Imp
33%inclusion1 decks3 decks
33%synergy
Persistent Constrictor
33%inclusion1 decks3 decks
31%synergy
Instants
Whisper of the Dross
100%inclusion3 decks3 decks
97%synergy
Vraska's Fall
100%inclusion3 decks3 decks
97%synergy
Grim Affliction
100%inclusion3 decks3 decks
98%synergy
Dark Ritual
100%inclusion3 decks3 decks
33%synergy
Deadly Rollick
67%inclusion2 decks3 decks
41%synergy
Defile
67%inclusion2 decks3 decks
32%synergy
Cabal Ritual
67%inclusion2 decks3 decks
48%synergy
Fell the Profane
33%inclusion1 decks3 decks
14%synergy
Go for the Throat
33%inclusion1 decks3 decks
11%synergy
Village Rites
33%inclusion1 decks3 decks
8%synergy
Rat Out
33%inclusion1 decks3 decks
32%synergy
Howl from Beyond
33%inclusion1 decks3 decks
33%synergy
Virulent Wound
33%inclusion1 decks3 decks
33%synergy
Bleed Dry
33%inclusion1 decks3 decks
33%synergy
Tainted Strike
33%inclusion1 decks3 decks
30%synergy
Feed the Cycle
33%inclusion1 decks3 decks
33%synergy
Dismember
33%inclusion1 decks3 decks
23%synergy
Sephiroth's Intervention
33%inclusion1 decks3 decks
31%synergy
Sorceries
Bubbling Muck
100%inclusion3 decks3 decks
84%synergy
Infectious Inquiry
100%inclusion3 decks3 decks
97%synergy
Drown in Ichor
100%inclusion3 decks3 decks
97%synergy
Vat Emergence
67%inclusion2 decks3 decks
65%synergy
Diabolic Tutor
67%inclusion2 decks3 decks
53%synergy
Revenge of the Rats
67%inclusion2 decks3 decks
64%synergy
Phyresis Outbreak
67%inclusion2 decks3 decks
65%synergy
Patriarch's Bidding
33%inclusion1 decks3 decks
29%synergy
Profane Tutor
33%inclusion1 decks3 decks
29%synergy
Feed the Swarm
33%inclusion1 decks3 decks
-17%synergy
Profane Command
33%inclusion1 decks3 decks
32%synergy
Night's Whisper
33%inclusion1 decks3 decks
8%synergy
Exsanguinate
33%inclusion1 decks3 decks
9%synergy
Caress of Phyrexia
33%inclusion1 decks3 decks
33%synergy
Fell
33%inclusion1 decks3 decks
30%synergy
Reanimate
33%inclusion1 decks3 decks
-8%synergy
The Black Breath
33%inclusion1 decks3 decks
33%synergy
Sign in Blood
33%inclusion1 decks3 decks
-1%synergy
Kindred Dominance
33%inclusion1 decks3 decks
29%synergy
Behold the Sinister Six!
33%inclusion1 decks3 decks
33%synergy
Utility Artifacts
Bontu's Monument
100%inclusion3 decks3 decks
72%synergy
Jet Medallion
100%inclusion3 decks3 decks
38%synergy
Contagion Clasp
67%inclusion2 decks3 decks
65%synergy
The Darkness Crystal
67%inclusion2 decks3 decks
47%synergy
Lashwrithe
33%inclusion1 decks3 decks
30%synergy
Nightmare Lash
33%inclusion1 decks3 decks
31%synergy
Contagion Engine
33%inclusion1 decks3 decks
32%synergy
Sword of Truth and Justice
33%inclusion1 decks3 decks
33%synergy
Prosthetic Injector
33%inclusion1 decks3 decks
33%synergy
Vanquisher's Banner
33%inclusion1 decks3 decks
30%synergy
Whispersilk Cloak
33%inclusion1 decks3 decks
27%synergy
Champion's Helm
33%inclusion1 decks3 decks
31%synergy
Swiftfoot Boots
33%inclusion1 decks3 decks
2%synergy
Commander's Plate
33%inclusion1 decks3 decks
27%synergy
Blackblade Reforged
33%inclusion1 decks3 decks
30%synergy
Grafted Exoskeleton
33%inclusion1 decks3 decks
32%synergy
Enchantments
Necrogen Communion
67%inclusion2 decks3 decks
65%synergy
Crumbling Ashes
33%inclusion1 decks3 decks
33%synergy
Festering Wound
33%inclusion1 decks3 decks
33%synergy
Grasping Shadows
33%inclusion1 decks3 decks
33%synergy
Tribute to Horobi
33%inclusion1 decks3 decks
32%synergy
Phyresis
33%inclusion1 decks3 decks
31%synergy
Call of the Ring
33%inclusion1 decks3 decks
31%synergy
Kaya's Ghostform
33%inclusion1 decks3 decks
23%synergy
Snake Cult Initiation
33%inclusion1 decks3 decks
33%synergy
Oubliette
33%inclusion1 decks3 decks
31%synergy
Leshrac's Rite
33%inclusion1 decks3 decks
33%synergy
Cover of Darkness
33%inclusion1 decks3 decks
30%synergy
Phyrexian Arena
33%inclusion1 decks3 decks
-6%synergy
Planeswalkers
Vraska, Betrayal's Sting
67%inclusion2 decks3 decks
64%synergy
Liliana of the Dark Realms
67%inclusion2 decks3 decks
53%synergy
Utility Lands
Bojuka Bog
100%inclusion3 decks3 decks
53%synergy
Karn's Bastion
100%inclusion3 decks3 decks
96%synergy
Swarmyard
67%inclusion2 decks3 decks
61%synergy
Crypt of Agadeem
67%inclusion2 decks3 decks
55%synergy
Witch's Cottage
67%inclusion2 decks3 decks
42%synergy
Mudflat Village
67%inclusion2 decks3 decks
64%synergy
Shizo, Death's Storehouse
33%inclusion1 decks3 decks
23%synergy
Cabal Stronghold
33%inclusion1 decks3 decks
-0%synergy
Inkmoth Nexus
33%inclusion1 decks3 decks
32%synergy
Cabal Coffers
33%inclusion1 decks3 decks
-21%synergy
Nykthos, Shrine to Nyx
33%inclusion1 decks3 decks
4%synergy
Reliquary Tower
33%inclusion1 decks3 decks
4%synergy
Strip Mine
33%inclusion1 decks3 decks
31%synergy
Urborg, Tomb of Yawgmoth
33%inclusion1 decks3 decks
-4%synergy
Access Tunnel
33%inclusion1 decks3 decks
30%synergy
Rogue's Passage
33%inclusion1 decks3 decks
14%synergy
Secret Tunnel
33%inclusion1 decks3 decks
32%synergy
Mana Artifacts
Sol Ring
100%inclusion3 decks3 decks
15%synergy
Arcane Signet
67%inclusion2 decks3 decks
5%synergy
Glistening Sphere
67%inclusion2 decks3 decks
66%synergy
The Soul Stone
67%inclusion2 decks3 decks
51%synergy
Charcoal Diamond
33%inclusion1 decks3 decks
12%synergy
Thought Vessel
33%inclusion1 decks3 decks
9%synergy
Lands
Swamp
100%inclusion3 decks3 decks
5%synergy
Fell the Profane
33%inclusion1 decks3 decks
14%synergy
Myriad Landscape
33%inclusion1 decks3 decks
9%synergy
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