Karumonix, the Rat King (Commander) - Upgraded Rats

Karumonix, the Rat King
Rank #393
24decks
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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Enchantments
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Utility Lands
Mana Artifacts
Lands
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Blightbelly Rat
96%inclusion23 decks24 decks
92%synergy
Ichor Rats
92%inclusion22 decks24 decks
89%synergy
Infectious Inquiry
88%inclusion21 decks24 decks
85%synergy
Piper of the Swarm
92%inclusion22 decks24 decks
85%synergy
Vraska's Fall
79%inclusion19 decks24 decks
76%synergy
Marrow-Gnawer
79%inclusion19 decks24 decks
76%synergy
Ogre Slumlord
83%inclusion20 decks24 decks
73%synergy
Septic Rats
75%inclusion18 decks24 decks
73%synergy
Drown in Ichor
71%inclusion17 decks24 decks
67%synergy
Karn's Bastion
71%inclusion17 decks24 decks
67%synergy
Top Cards
Lord Skitter, Sewer King
75%inclusion18 decks24 decks
67%synergy
Tangled Colony
67%inclusion16 decks24 decks
64%synergy
Dark Ritual
67%inclusion16 decks24 decks
-0%synergy
Whisper of the Dross
63%inclusion15 decks24 decks
60%synergy
Pack Rat
63%inclusion15 decks24 decks
57%synergy
Bontu's Monument
63%inclusion15 decks24 decks
34%synergy
Stronghold Rats
63%inclusion15 decks24 decks
59%synergy
Lord Skitter's Butcher
58%inclusion14 decks24 decks
55%synergy
Skullclamp
58%inclusion14 decks24 decks
36%synergy
Jet Medallion
58%inclusion14 decks24 decks
-4%synergy
Game Changers
Vampiric Tutor
38%inclusion9 decks24 decks
17%synergy
Demonic Tutor
29%inclusion7 decks24 decks
2%synergy
Creatures
Rancid Rats
58%inclusion14 decks24 decks
56%synergy
Crypt Rats
54%inclusion13 decks24 decks
50%synergy
Burglar Rat
54%inclusion13 decks24 decks
43%synergy
Persistent Marshstalker
54%inclusion13 decks24 decks
51%synergy
Typhoid Rats
54%inclusion13 decks24 decks
50%synergy
Voracious Vermin
50%inclusion12 decks24 decks
47%synergy
Nezumi Informant
50%inclusion12 decks24 decks
44%synergy
Rat Colony
50%inclusion12 decks24 decks
44%synergy
Chittering Skitterling
46%inclusion11 decks24 decks
45%synergy
Ashcoat of the Shadow Swarm
46%inclusion11 decks24 decks
42%synergy
Ratcatcher
46%inclusion11 decks24 decks
42%synergy
Gnat Miser
46%inclusion11 decks24 decks
43%synergy
Wave of Rats
42%inclusion10 decks24 decks
40%synergy
Nashi, Moon Sage's Scion
42%inclusion10 decks24 decks
38%synergy
Rat King, Pale Piper
38%inclusion5 decks13 decks
34%synergy
Ayara, First of Locthwain
38%inclusion9 decks24 decks
12%synergy
Ink-Eyes, Servant of Oni
38%inclusion9 decks24 decks
34%synergy
Gray Merchant of Asphodel
33%inclusion8 decks24 decks
-17%synergy
Throat Slitter
33%inclusion8 decks24 decks
32%synergy
Changeling Outcast
29%inclusion7 decks24 decks
24%synergy
Nezumi Prowler
29%inclusion7 decks24 decks
28%synergy
Undercity Dire Rat
27%inclusion6 decks22 decks
25%synergy
Gnawing Vermin
25%inclusion6 decks24 decks
24%synergy
Locust Miser
25%inclusion6 decks24 decks
23%synergy
Chittering Witch
25%inclusion6 decks24 decks
21%synergy
Nezumi Cutthroat
25%inclusion6 decks24 decks
24%synergy
Pestilence Rats
25%inclusion6 decks24 decks
23%synergy
Ravenous Rats
21%inclusion5 decks24 decks
19%synergy
Swarm of Rats
21%inclusion5 decks24 decks
18%synergy
Twisted Sewer-Witch
21%inclusion5 decks24 decks
19%synergy
Crypt Ghast
21%inclusion5 decks24 decks
-27%synergy
Ruin Rat
21%inclusion5 decks24 decks
20%synergy
Bog Rats
17%inclusion4 decks24 decks
16%synergy
Species Specialist
17%inclusion4 decks24 decks
13%synergy
Valley Rotcaller
17%inclusion4 decks24 decks
14%synergy
Okiba-Gang Shinobi
17%inclusion4 decks24 decks
16%synergy
Splinter, Hamato Yoshi
15%inclusion2 decks13 decks
15%synergy
Rat King, Verminister
13%inclusion2 decks15 decks
10%synergy
Refurbished Familiar
13%inclusion3 decks24 decks
10%synergy
Relentless Rats
13%inclusion3 decks24 decks
11%synergy
Ruthless Radrat
13%inclusion3 decks24 decks
12%synergy
Adaptive Automaton
13%inclusion3 decks24 decks
12%synergy
Razortooth Rats
13%inclusion3 decks24 decks
12%synergy
Engine Rat
13%inclusion3 decks24 decks
11%synergy
Yawgmoth, Thran Physician
13%inclusion3 decks24 decks
2%synergy
Drainpipe Vermin
13%inclusion3 decks24 decks
11%synergy
Patron of the Nezumi
8.3%inclusion2 decks24 decks
8%synergy
Chittering Rats
8.3%inclusion2 decks24 decks
8%synergy
Nezumi Graverobber
8.3%inclusion2 decks24 decks
7%synergy
Rotting Rats
8.3%inclusion2 decks24 decks
5%synergy
Instants
Go for the Throat
46%inclusion11 decks24 decks
23%synergy
Village Rites
38%inclusion9 decks24 decks
12%synergy
Grim Affliction
33%inclusion8 decks24 decks
31%synergy
Rat Out
29%inclusion7 decks24 decks
28%synergy
Defile
29%inclusion7 decks24 decks
-7%synergy
Tainted Strike
29%inclusion7 decks24 decks
26%synergy
Deadly Rollick
25%inclusion6 decks24 decks
0%synergy
Deadly Dispute
25%inclusion6 decks24 decks
-1%synergy
Anoint with Affliction
21%inclusion5 decks24 decks
20%synergy
Culling the Weak
21%inclusion5 decks24 decks
4%synergy
Malakir Rebirth
21%inclusion5 decks24 decks
-2%synergy
Hagra Mauling
17%inclusion4 decks24 decks
12%synergy
Sheoldred's Edict
17%inclusion4 decks24 decks
2%synergy
Extinguish the Light
17%inclusion4 decks24 decks
17%synergy
Infernal Grasp
17%inclusion4 decks24 decks
-8%synergy
Corrupted Conviction
17%inclusion4 decks24 decks
4%synergy
Tragic Slip
17%inclusion4 decks24 decks
-3%synergy
Withering Torment
17%inclusion4 decks24 decks
-15%synergy
Snuff Out
13%inclusion3 decks24 decks
-1%synergy
Sudden Spoiling
13%inclusion3 decks24 decks
4%synergy
Unbury
13%inclusion2 decks16 decks
12%synergy
Fell the Profane
8.3%inclusion2 decks24 decks
-11%synergy
Force of Despair
8.3%inclusion2 decks24 decks
1%synergy
Entomb
8.3%inclusion2 decks24 decks
-4%synergy
Imp's Mischief
8.3%inclusion2 decks24 decks
-17%synergy
Supernatural Stamina
8.3%inclusion2 decks24 decks
1%synergy
Virulent Wound
8.3%inclusion2 decks24 decks
8%synergy
Undying Malice
8.3%inclusion2 decks24 decks
-2%synergy
Murder
8.3%inclusion2 decks24 decks
-2%synergy
Fake Your Own Death
8.3%inclusion2 decks24 decks
1%synergy
Gravepurge
8.3%inclusion2 decks24 decks
7%synergy
Feign Death
8.3%inclusion2 decks24 decks
0%synergy
Sorceries
Revenge of the Rats
50%inclusion12 decks24 decks
47%synergy
Phyresis Outbreak
50%inclusion12 decks24 decks
48%synergy
Patriarch's Bidding
42%inclusion10 decks24 decks
38%synergy
Crippling Fear
42%inclusion10 decks24 decks
39%synergy
Sign in Blood
33%inclusion8 decks24 decks
-2%synergy
Vat Emergence
29%inclusion7 decks24 decks
28%synergy
Feed the Swarm
29%inclusion7 decks24 decks
-21%synergy
Night's Whisper
29%inclusion7 decks24 decks
4%synergy
Feed the Infection
25%inclusion6 decks24 decks
24%synergy
Shredder's Technique
21%inclusion3 decks14 decks
18%synergy
Spread the Sickness
21%inclusion5 decks24 decks
20%synergy
Toxic Deluge
21%inclusion5 decks24 decks
-16%synergy
Bloodline Bidding
19%inclusion3 decks16 decks
14%synergy
Bubbling Muck
17%inclusion4 decks24 decks
1%synergy
Echoing Return
17%inclusion4 decks24 decks
14%synergy
Reanimate
17%inclusion4 decks24 decks
-23%synergy
Kindred Dominance
17%inclusion4 decks24 decks
12%synergy
Damnation
17%inclusion4 decks24 decks
-4%synergy
Diabolic Intent
13%inclusion3 decks24 decks
-3%synergy
Diabolic Tutor
13%inclusion3 decks24 decks
-2%synergy
Swarmyard Massacre
13%inclusion3 decks24 decks
10%synergy
Read the Bones
13%inclusion3 decks24 decks
-4%synergy
Exsanguinate
13%inclusion3 decks24 decks
-12%synergy
Caress of Phyrexia
13%inclusion3 decks24 decks
12%synergy
Geth's Summons
13%inclusion3 decks24 decks
12%synergy
Black Sun's Zenith
8.3%inclusion2 decks24 decks
3%synergy
Profane Tutor
8.3%inclusion2 decks24 decks
4%synergy
Psychic Whorl
8.3%inclusion2 decks24 decks
8%synergy
Unearth
8.3%inclusion2 decks24 decks
-0%synergy
Decree of Pain
8.3%inclusion2 decks24 decks
3%synergy
Syphon Mind
8.3%inclusion2 decks24 decks
-4%synergy
Grim Tutor
8.3%inclusion2 decks24 decks
-3%synergy
Plague of Vermin
8.3%inclusion2 decks24 decks
6%synergy
Pact of the Serpent
8.3%inclusion2 decks24 decks
7%synergy
Utility Artifacts
Herald's Horn
58%inclusion14 decks24 decks
53%synergy
Contagion Clasp
25%inclusion6 decks24 decks
23%synergy
Thrumming Stone
21%inclusion5 decks24 decks
17%synergy
Icon of Ancestry
17%inclusion4 decks24 decks
16%synergy
Wayfarer's Bauble
17%inclusion4 decks24 decks
2%synergy
Ashnod's Altar
17%inclusion4 decks24 decks
-3%synergy
Vanquisher's Banner
17%inclusion4 decks24 decks
13%synergy
Expedition Map
17%inclusion4 decks24 decks
5%synergy
Blade of Selves
13%inclusion3 decks24 decks
11%synergy
Swiftfoot Boots
13%inclusion3 decks24 decks
-19%synergy
Lightning Greaves
13%inclusion3 decks24 decks
-21%synergy
Chronicle of Victory
13%inclusion2 decks16 decks
10%synergy
The Darkness Crystal
9.1%inclusion2 decks22 decks
-11%synergy
Vat of Rebirth
8.3%inclusion2 decks24 decks
5%synergy
Contagion Engine
8.3%inclusion2 decks24 decks
7%synergy
Whip of Erebos
8.3%inclusion2 decks24 decks
-3%synergy
Aetherflux Reservoir
8.3%inclusion2 decks24 decks
-1%synergy
Coat of Arms
8.3%inclusion2 decks24 decks
6%synergy
Sword of the Squeak
8.3%inclusion2 decks24 decks
8%synergy
Sword of Hearth and Home
8.3%inclusion2 decks24 decks
7%synergy
Grafted Exoskeleton
8.3%inclusion2 decks24 decks
7%synergy
Gathering Stone
6.3%inclusion1 decks16 decks
5%synergy
Enchantments
Necrogen Communion
50%inclusion12 decks24 decks
48%synergy
Cover of Darkness
38%inclusion9 decks24 decks
34%synergy
Phyrexian Arena
38%inclusion9 decks24 decks
-2%synergy
Phyresis
25%inclusion6 decks24 decks
23%synergy
Black Market Connections
21%inclusion5 decks24 decks
-3%synergy
Oversold Cemetery
17%inclusion4 decks24 decks
11%synergy
Glistening Oil
13%inclusion3 decks24 decks
12%synergy
Grave Pact
13%inclusion3 decks24 decks
-7%synergy
Black Market
8.3%inclusion2 decks24 decks
-12%synergy
Phyrexian Reclamation
8.3%inclusion2 decks24 decks
-2%synergy
Haunted One
8.3%inclusion2 decks24 decks
6%synergy
Tribute to Horobi
8.3%inclusion2 decks24 decks
7%synergy
Carnival of Souls
8.3%inclusion2 decks24 decks
7%synergy
Animate Dead
8.3%inclusion2 decks24 decks
-9%synergy
Oubliette
8.3%inclusion2 decks24 decks
5%synergy
Lord Skitter's Blessing
8.3%inclusion2 decks24 decks
8%synergy
Dark Prophecy
8.3%inclusion2 decks24 decks
4%synergy
Bad Moon
8.3%inclusion2 decks24 decks
5%synergy
Planeswalkers
Vraska, Betrayal's Sting
33%inclusion8 decks24 decks
31%synergy
Liliana of the Dark Realms
8.3%inclusion2 decks24 decks
-6%synergy
Utility Lands
Bojuka Bog
75%inclusion18 decks24 decks
28%synergy
Swarmyard
67%inclusion16 decks24 decks
61%synergy
Cabal Coffers
67%inclusion16 decks24 decks
12%synergy
Witch's Cottage
42%inclusion10 decks24 decks
17%synergy
Mudflat Village
42%inclusion10 decks24 decks
39%synergy
Rogue's Passage
42%inclusion10 decks24 decks
23%synergy
Cabal Stronghold
33%inclusion8 decks24 decks
-1%synergy
Mortuary Mire
29%inclusion7 decks24 decks
16%synergy
Nykthos, Shrine to Nyx
29%inclusion7 decks24 decks
-1%synergy
Reliquary Tower
29%inclusion7 decks24 decks
-1%synergy
Urborg, Tomb of Yawgmoth
25%inclusion6 decks24 decks
-13%synergy
Three Tree City
21%inclusion5 decks24 decks
16%synergy
Barren Moor
17%inclusion4 decks24 decks
7%synergy
War Room
17%inclusion4 decks24 decks
1%synergy
Crypt of Agadeem
13%inclusion3 decks24 decks
1%synergy
Inkmoth Nexus
13%inclusion3 decks24 decks
12%synergy
Spymaster's Vault
13%inclusion3 decks24 decks
3%synergy
Takenuma, Abandoned Mire
13%inclusion3 decks24 decks
-3%synergy
Phyrexian Tower
8.3%inclusion2 decks24 decks
-17%synergy
Desert of the Glorified
8.3%inclusion2 decks24 decks
6%synergy
The Dross Pits
8.3%inclusion2 decks24 decks
7%synergy
Polluted Mire
8.3%inclusion2 decks24 decks
5%synergy
Peat Bog
8.3%inclusion2 decks24 decks
6%synergy
Castle Locthwain
8.3%inclusion2 decks24 decks
-8%synergy
Access Tunnel
8.3%inclusion2 decks24 decks
5%synergy
Mana Artifacts
Sol Ring
88%inclusion21 decks24 decks
2%synergy
Arcane Signet
50%inclusion12 decks24 decks
-12%synergy
Glistening Sphere
46%inclusion11 decks24 decks
45%synergy
Patchwork Banner
17%inclusion4 decks24 decks
12%synergy
Charcoal Diamond
13%inclusion3 decks24 decks
-10%synergy
The Soul Stone
10%inclusion2 decks20 decks
-5%synergy
Staff of Compleation
8.3%inclusion2 decks24 decks
7%synergy
Heraldic Banner
8.3%inclusion2 decks24 decks
3%synergy
Throne of Eldraine
8.3%inclusion2 decks24 decks
-1%synergy
Thought Vessel
8.3%inclusion2 decks24 decks
-17%synergy
Phyrexian Atlas
8.3%inclusion2 decks24 decks
8%synergy
Mind Stone
8.3%inclusion2 decks24 decks
-20%synergy
Sceptre of Eternal Glory
8.3%inclusion2 decks24 decks
0%synergy
Lands
Swamp
100%inclusion24 decks24 decks
5%synergy
Path of Ancestry
46%inclusion11 decks24 decks
41%synergy
Cavern of Souls
21%inclusion5 decks24 decks
14%synergy
Malakir Rebirth
21%inclusion5 decks24 decks
-2%synergy
Hagra Mauling
17%inclusion4 decks24 decks
12%synergy
Command Tower
17%inclusion4 decks24 decks
11%synergy
Evolving Wilds
17%inclusion4 decks24 decks
13%synergy
Big Apple, 3 a.m.
15%inclusion2 decks13 decks
14%synergy
Terramorphic Expanse
13%inclusion3 decks24 decks
10%synergy
Fell the Profane
8.3%inclusion2 decks24 decks
-11%synergy
Myriad Landscape
8.3%inclusion2 decks24 decks
-17%synergy
Mirrex
8.3%inclusion2 decks24 decks
8%synergy
Ash Barrens
8.3%inclusion2 decks24 decks
7%synergy
Daily Bugle Building
5.3%inclusion1 decks19 decks
5%synergy
Vibrant Cityscape
5.3%inclusion1 decks19 decks
5%synergy
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