Karumonix, the Rat King (Commander) - Upgraded Discard

Karumonix, the Rat King
Rank #412
8decks
As CommanderAs CardAverage DeckDecks
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1
23
4
5
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$
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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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Tangled Colony
100%inclusion8 decks8 decks
97%synergy
Piper of the Swarm
100%inclusion8 decks8 decks
93%synergy
Burglar Rat
100%inclusion8 decks8 decks
90%synergy
Drown in Ichor
88%inclusion7 decks8 decks
84%synergy
Swarmyard
88%inclusion7 decks8 decks
82%synergy
Pack Rat
88%inclusion7 decks8 decks
82%synergy
Lord Skitter, Sewer King
88%inclusion7 decks8 decks
80%synergy
Septic Rats
75%inclusion6 decks8 decks
73%synergy
Infectious Inquiry
75%inclusion6 decks8 decks
72%synergy
Lord Skitter's Butcher
75%inclusion6 decks8 decks
72%synergy
Top Cards
Nezumi Informant
75%inclusion6 decks8 decks
69%synergy
Dark Ritual
75%inclusion6 decks8 decks
8%synergy
Vraska's Fall
75%inclusion6 decks8 decks
72%synergy
Ogre Slumlord
75%inclusion6 decks8 decks
66%synergy
Blightbelly Rat
75%inclusion6 decks8 decks
72%synergy
Typhoid Rats
75%inclusion6 decks8 decks
72%synergy
Stronghold Rats
75%inclusion6 decks8 decks
72%synergy
Bontu's Monument
75%inclusion6 decks8 decks
47%synergy
Marrow-Gnawer
63%inclusion5 decks8 decks
59%synergy
Rotting Rats
63%inclusion5 decks8 decks
60%synergy
Game Changers
Bolas's Citadel
25%inclusion2 decks8 decks
-3%synergy
Demonic Tutor
13%inclusion1 decks8 decks
-14%synergy
Necropotence
13%inclusion1 decks8 decks
-2%synergy
Vampiric Tutor
13%inclusion1 decks8 decks
-8%synergy
Creatures
Gnawing Vermin
63%inclusion5 decks8 decks
61%synergy
Throat Slitter
63%inclusion5 decks8 decks
61%synergy
Persistent Marshstalker
63%inclusion5 decks8 decks
60%synergy
Engine Rat
63%inclusion5 decks8 decks
61%synergy
Ichor Rats
63%inclusion5 decks8 decks
60%synergy
Swarm of Rats
50%inclusion4 decks8 decks
48%synergy
Voracious Vermin
50%inclusion4 decks8 decks
47%synergy
Nezumi Cutthroat
50%inclusion4 decks8 decks
49%synergy
Wave of Rats
50%inclusion4 decks8 decks
48%synergy
Gnat Miser
50%inclusion4 decks8 decks
47%synergy
Rancid Rats
50%inclusion4 decks8 decks
48%synergy
Rat King, Verminister
40%inclusion2 decks5 decks
37%synergy
Rat King, Pale Piper
40%inclusion2 decks5 decks
36%synergy
Crypt Rats
38%inclusion3 decks8 decks
33%synergy
Nezumi Graverobber
38%inclusion3 decks8 decks
36%synergy
Ravenous Rats
38%inclusion3 decks8 decks
36%synergy
Ink-Eyes, Servant of Oni
38%inclusion3 decks8 decks
34%synergy
Chittering Witch
38%inclusion3 decks8 decks
33%synergy
Changeling Outcast
38%inclusion3 decks8 decks
33%synergy
Nezumi Prowler
38%inclusion3 decks8 decks
36%synergy
Drainpipe Vermin
38%inclusion3 decks8 decks
36%synergy
Rat Colony
38%inclusion3 decks8 decks
32%synergy
Okiba-Gang Shinobi
38%inclusion3 decks8 decks
37%synergy
Ruin Rat
38%inclusion3 decks8 decks
36%synergy
Undercity Dire Rat
33%inclusion2 decks6 decks
32%synergy
Bog Rats
25%inclusion2 decks8 decks
25%synergy
Chittering Rats
25%inclusion2 decks8 decks
24%synergy
Innocuous Rat
25%inclusion2 decks8 decks
24%synergy
Mukotai Ambusher
25%inclusion2 decks8 decks
24%synergy
Nezumi Shortfang
25%inclusion2 decks8 decks
24%synergy
Species Specialist
25%inclusion2 decks8 decks
22%synergy
Nezumi Linkbreaker
25%inclusion2 decks8 decks
24%synergy
Zodiac Rat
25%inclusion2 decks8 decks
25%synergy
Locust Miser
25%inclusion2 decks8 decks
24%synergy
Chittering Skitterling
25%inclusion2 decks8 decks
24%synergy
Twisted Sewer-Witch
25%inclusion2 decks8 decks
24%synergy
Ashcoat of the Shadow Swarm
25%inclusion2 decks8 decks
21%synergy
Ratcatcher
25%inclusion2 decks8 decks
22%synergy
Pestilence Rats
25%inclusion2 decks8 decks
23%synergy
Muck Rats
25%inclusion2 decks8 decks
25%synergy
Sewer Rats
25%inclusion2 decks8 decks
25%synergy
Nezumi Bone-Reader
25%inclusion2 decks8 decks
24%synergy
Nashi, Moon Sage's Scion
25%inclusion2 decks8 decks
21%synergy
Refurbished Familiar
13%inclusion1 decks8 decks
10%synergy
Patron of the Nezumi
13%inclusion1 decks8 decks
12%synergy
Tree of Perdition
13%inclusion1 decks8 decks
11%synergy
Maha, Its Feathers Night
13%inclusion1 decks8 decks
8%synergy
Scrawling Crawler
13%inclusion1 decks8 decks
8%synergy
Blood Artist
13%inclusion1 decks8 decks
-19%synergy
Morbid Opportunist
13%inclusion1 decks8 decks
-12%synergy
Instants
Whisper of the Dross
50%inclusion4 decks8 decks
47%synergy
Village Rites
38%inclusion3 decks8 decks
12%synergy
Grim Affliction
38%inclusion3 decks8 decks
36%synergy
Fell the Profane
25%inclusion2 decks8 decks
5%synergy
Rat Out
25%inclusion2 decks8 decks
24%synergy
Consuming Corruption
25%inclusion2 decks8 decks
10%synergy
Culling the Weak
25%inclusion2 decks8 decks
7%synergy
Virulent Wound
25%inclusion2 decks8 decks
25%synergy
Murder
25%inclusion2 decks8 decks
15%synergy
Tainted Strike
25%inclusion2 decks8 decks
22%synergy
Malakir Rebirth
25%inclusion2 decks8 decks
1%synergy
Fake Your Own Death
25%inclusion2 decks8 decks
17%synergy
Rabid Attack
20%inclusion1 decks5 decks
19%synergy
Deadly Rollick
13%inclusion1 decks8 decks
-13%synergy
Force of Despair
13%inclusion1 decks8 decks
5%synergy
Go for the Throat
13%inclusion1 decks8 decks
-10%synergy
Imp's Mischief
13%inclusion1 decks8 decks
-13%synergy
Anoint with Affliction
13%inclusion1 decks8 decks
12%synergy
Deadly Dispute
13%inclusion1 decks8 decks
-15%synergy
Defile
13%inclusion1 decks8 decks
-23%synergy
Doom Blade
13%inclusion1 decks8 decks
6%synergy
Supernatural Stamina
13%inclusion1 decks8 decks
5%synergy
Raise the Draugr
13%inclusion1 decks8 decks
12%synergy
Darkness
13%inclusion1 decks8 decks
2%synergy
Infernal Grasp
13%inclusion1 decks8 decks
-13%synergy
Plumb the Forbidden
13%inclusion1 decks8 decks
8%synergy
Corrupted Conviction
13%inclusion1 decks8 decks
0%synergy
Bladebrand
13%inclusion1 decks8 decks
12%synergy
Offer Immortality
13%inclusion1 decks8 decks
11%synergy
Gravepurge
13%inclusion1 decks8 decks
11%synergy
Nameless Inversion
13%inclusion1 decks8 decks
12%synergy
Tragic Slip
13%inclusion1 decks8 decks
-6%synergy
Sorceries
Phyresis Outbreak
50%inclusion4 decks8 decks
48%synergy
Revenge of the Rats
38%inclusion3 decks8 decks
34%synergy
Swarmyard Massacre
38%inclusion3 decks8 decks
35%synergy
Crippling Fear
38%inclusion3 decks8 decks
35%synergy
Bloodline Bidding
33%inclusion2 decks6 decks
30%synergy
Unearth
25%inclusion2 decks8 decks
16%synergy
Night's Whisper
25%inclusion2 decks8 decks
-1%synergy
Caress of Phyrexia
25%inclusion2 decks8 decks
24%synergy
Syphon Mind
25%inclusion2 decks8 decks
13%synergy
Sign in Blood
25%inclusion2 decks8 decks
-10%synergy
Kindred Dominance
25%inclusion2 decks8 decks
20%synergy
Diabolic Intent
13%inclusion1 decks8 decks
-3%synergy
Vat Emergence
13%inclusion1 decks8 decks
11%synergy
Spread the Sickness
13%inclusion1 decks8 decks
12%synergy
Victimize
13%inclusion1 decks8 decks
-15%synergy
Haunting Voyage
13%inclusion1 decks8 decks
11%synergy
Duress
13%inclusion1 decks8 decks
6%synergy
Return from Extinction
13%inclusion1 decks8 decks
12%synergy
Inquisition of Kozilek
13%inclusion1 decks8 decks
11%synergy
Bubbling Muck
13%inclusion1 decks8 decks
-3%synergy
Psychic Whorl
13%inclusion1 decks8 decks
12%synergy
Feed the Infection
13%inclusion1 decks8 decks
12%synergy
Petty Larceny
13%inclusion1 decks8 decks
12%synergy
Agadeem's Awakening
13%inclusion1 decks8 decks
5%synergy
Feed the Swarm
13%inclusion1 decks8 decks
-38%synergy
Read the Bones
13%inclusion1 decks8 decks
-3%synergy
Mutilate
13%inclusion1 decks8 decks
-3%synergy
Killing Wave
13%inclusion1 decks8 decks
10%synergy
Tendrils of Agony
13%inclusion1 decks8 decks
10%synergy
Cruelclaw's Heist
13%inclusion1 decks8 decks
10%synergy
Fell
13%inclusion1 decks8 decks
9%synergy
Living Death
13%inclusion1 decks8 decks
2%synergy
Annihilating Glare
13%inclusion1 decks8 decks
11%synergy
Insatiable Avarice
13%inclusion1 decks8 decks
2%synergy
Toxic Deluge
13%inclusion1 decks8 decks
-24%synergy
Geth's Summons
13%inclusion1 decks8 decks
12%synergy
Lab Rats
13%inclusion1 decks8 decks
12%synergy
Final Vengeance
13%inclusion1 decks8 decks
11%synergy
Gruesome Fate
13%inclusion1 decks8 decks
11%synergy
Pilfer
13%inclusion1 decks8 decks
10%synergy
Damnation
13%inclusion1 decks8 decks
-7%synergy
Thoughtseize
13%inclusion1 decks8 decks
8%synergy
Pact of the Serpent
13%inclusion1 decks8 decks
11%synergy
Utility Artifacts
Jet Medallion
63%inclusion5 decks8 decks
0%synergy
Herald's Horn
50%inclusion4 decks8 decks
44%synergy
Swiftfoot Boots
38%inclusion3 decks8 decks
6%synergy
Vat of Rebirth
25%inclusion2 decks8 decks
22%synergy
Crawlspace
25%inclusion2 decks8 decks
24%synergy
Contagion Clasp
25%inclusion2 decks8 decks
23%synergy
Skullclamp
25%inclusion2 decks8 decks
3%synergy
Sword of Truth and Justice
25%inclusion2 decks8 decks
24%synergy
Door of Destinies
25%inclusion2 decks8 decks
23%synergy
Grafted Exoskeleton
25%inclusion2 decks8 decks
24%synergy
The Darkness Crystal
17%inclusion1 decks6 decks
-3%synergy
Chronicle of Victory
17%inclusion1 decks6 decks
14%synergy
Glaring Spotlight
13%inclusion1 decks8 decks
12%synergy
Defense Grid
13%inclusion1 decks8 decks
10%synergy
Cloud Key
13%inclusion1 decks8 decks
11%synergy
Icon of Ancestry
13%inclusion1 decks8 decks
12%synergy
Contagion Engine
13%inclusion1 decks8 decks
11%synergy
Whip of Erebos
13%inclusion1 decks8 decks
2%synergy
Coat of Arms
13%inclusion1 decks8 decks
10%synergy
Sword of the Squeak
13%inclusion1 decks8 decks
12%synergy
Banner of Kinship
13%inclusion1 decks8 decks
10%synergy
Recon Craft Theta
13%inclusion1 decks8 decks
12%synergy
Sword of Hearth and Home
13%inclusion1 decks8 decks
11%synergy
Torpor Orb
13%inclusion1 decks8 decks
11%synergy
Fireshrieker
13%inclusion1 decks8 decks
11%synergy
Urza's Incubator
13%inclusion1 decks8 decks
10%synergy
Idol of Oblivion
13%inclusion1 decks8 decks
11%synergy
Staff of the Death Magus
13%inclusion1 decks8 decks
9%synergy
Thornbite Staff
13%inclusion1 decks8 decks
10%synergy
Geth's Grimoire
13%inclusion1 decks8 decks
6%synergy
Lifeline
13%inclusion1 decks8 decks
12%synergy
Enchantments
Necrogen Communion
63%inclusion5 decks8 decks
61%synergy
Grave Pact
38%inclusion3 decks8 decks
18%synergy
Kaya's Ghostform
38%inclusion3 decks8 decks
27%synergy
Cover of Darkness
38%inclusion3 decks8 decks
34%synergy
Phyresis
25%inclusion2 decks8 decks
23%synergy
Bandit's Talent
25%inclusion2 decks8 decks
20%synergy
Painful Quandary
25%inclusion2 decks8 decks
15%synergy
Oversold Cemetery
25%inclusion2 decks8 decks
20%synergy
Phyrexian Arena
25%inclusion2 decks8 decks
-14%synergy
Waste Not
13%inclusion1 decks8 decks
2%synergy
Dark Tutelage
13%inclusion1 decks8 decks
11%synergy
Polluted Bonds
13%inclusion1 decks8 decks
10%synergy
Black Market
13%inclusion1 decks8 decks
-8%synergy
Okiba Reckoner Raid
13%inclusion1 decks8 decks
12%synergy
Glistening Oil
13%inclusion1 decks8 decks
12%synergy
Phyrexian Reclamation
13%inclusion1 decks8 decks
3%synergy
Vampiric Rites
13%inclusion1 decks8 decks
7%synergy
Haunted One
13%inclusion1 decks8 decks
10%synergy
Tribute to Horobi
13%inclusion1 decks8 decks
12%synergy
Call of the Ring
13%inclusion1 decks8 decks
10%synergy
Intimidation
13%inclusion1 decks8 decks
12%synergy
Vile Requiem
13%inclusion1 decks8 decks
12%synergy
Gate to Phyrexia
13%inclusion1 decks8 decks
12%synergy
Oubliette
13%inclusion1 decks8 decks
10%synergy
Black Market Connections
13%inclusion1 decks8 decks
-13%synergy
Triskaidekaphobia
13%inclusion1 decks8 decks
12%synergy
Oppression
13%inclusion1 decks8 decks
5%synergy
Leyline of the Void
13%inclusion1 decks8 decks
11%synergy
Bad Moon
13%inclusion1 decks8 decks
9%synergy
Planeswalkers
Vraska, Betrayal's Sting
50%inclusion4 decks8 decks
47%synergy
Liliana of the Dark Realms
25%inclusion2 decks8 decks
11%synergy
Liliana of the Veil
13%inclusion1 decks8 decks
6%synergy
Utility Lands
Bojuka Bog
63%inclusion5 decks8 decks
15%synergy
Karn's Bastion
63%inclusion5 decks8 decks
59%synergy
Mudflat Village
63%inclusion5 decks8 decks
60%synergy
Reliquary Tower
38%inclusion3 decks8 decks
8%synergy
Rogue's Passage
38%inclusion3 decks8 decks
18%synergy
Mortuary Mire
25%inclusion2 decks8 decks
12%synergy
Witch's Cottage
25%inclusion2 decks8 decks
0%synergy
Cabal Coffers
25%inclusion2 decks8 decks
-30%synergy
Temple of the False God
25%inclusion2 decks8 decks
18%synergy
Three Tree City
25%inclusion2 decks8 decks
20%synergy
Access Tunnel
25%inclusion2 decks8 decks
22%synergy
Secret Tunnel
17%inclusion1 decks6 decks
16%synergy
Shizo, Death's Storehouse
13%inclusion1 decks8 decks
2%synergy
Memorial to Folly
13%inclusion1 decks8 decks
9%synergy
Barren Moor
13%inclusion1 decks8 decks
3%synergy
Tyrite Sanctum
13%inclusion1 decks8 decks
12%synergy
Volrath's Stronghold
13%inclusion1 decks8 decks
9%synergy
The Dross Pits
13%inclusion1 decks8 decks
11%synergy
Nykthos, Shrine to Nyx
13%inclusion1 decks8 decks
-17%synergy
Minas Morgul, Dark Fortress
13%inclusion1 decks8 decks
9%synergy
Throne of the High City
13%inclusion1 decks8 decks
12%synergy
Takenuma, Abandoned Mire
13%inclusion1 decks8 decks
-3%synergy
Ifnir Deadlands
13%inclusion1 decks8 decks
12%synergy
Castle Locthwain
13%inclusion1 decks8 decks
-4%synergy
Strip Mine
13%inclusion1 decks8 decks
10%synergy
Urborg, Tomb of Yawgmoth
13%inclusion1 decks8 decks
-25%synergy
Mana Artifacts
Sol Ring
88%inclusion7 decks8 decks
2%synergy
Patchwork Banner
50%inclusion4 decks8 decks
45%synergy
Arcane Signet
38%inclusion3 decks8 decks
-24%synergy
Glistening Sphere
38%inclusion3 decks8 decks
36%synergy
Staff of Compleation
25%inclusion2 decks8 decks
23%synergy
Throne of Eldraine
25%inclusion2 decks8 decks
16%synergy
Phyrexian Atlas
25%inclusion2 decks8 decks
25%synergy
The Soul Stone
17%inclusion1 decks6 decks
1%synergy
Thought Vessel
13%inclusion1 decks8 decks
-12%synergy
Liquimetal Torque
13%inclusion1 decks8 decks
10%synergy
Lands
Swamp
100%inclusion8 decks8 decks
5%synergy
Path of Ancestry
63%inclusion5 decks8 decks
58%synergy
Fell the Profane
25%inclusion2 decks8 decks
5%synergy
Command Tower
25%inclusion2 decks8 decks
19%synergy
Malakir Rebirth
25%inclusion2 decks8 decks
1%synergy
Escape Tunnel
13%inclusion1 decks8 decks
11%synergy
The Mycosynth Gardens
13%inclusion1 decks8 decks
11%synergy
Fabled Passage
13%inclusion1 decks8 decks
10%synergy
The Seedcore
13%inclusion1 decks8 decks
12%synergy
Agadeem's Awakening
13%inclusion1 decks8 decks
5%synergy
Verdant Catacombs
13%inclusion1 decks8 decks
9%synergy
Cavern of Souls
13%inclusion1 decks8 decks
6%synergy
Evolving Wilds
13%inclusion1 decks8 decks
9%synergy
Tarnation Vista
13%inclusion1 decks8 decks
12%synergy
Marsh Flats
13%inclusion1 decks8 decks
9%synergy
Polluted Delta
13%inclusion1 decks8 decks
9%synergy
Bloodstained Mire
13%inclusion1 decks8 decks
9%synergy
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