Karumonix, the Rat King (Commander) - Expensive Infect

Karumonix, the Rat King
Rank #384
52decks
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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Utility Lands
Mana Artifacts
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Rat King, Pale Piper
33%inclusion4 decks12 decks
29%synergy
Rat King, Verminister
31%inclusion4 decks13 decks
28%synergy
Shredder's Technique
17%inclusion2 decks12 decks
13%synergy
High Synergy Cards
Marrow-Gnawer
100%inclusion52 decks52 decks
97%synergy
Swarmyard
92%inclusion48 decks52 decks
87%synergy
Ashcoat of the Shadow Swarm
87%inclusion45 decks52 decks
83%synergy
Piper of the Swarm
88%inclusion46 decks52 decks
81%synergy
Blightbelly Rat
85%inclusion44 decks52 decks
81%synergy
Ichor Rats
77%inclusion40 decks52 decks
74%synergy
Ogre Slumlord
83%inclusion43 decks52 decks
73%synergy
Infectious Inquiry
75%inclusion39 decks52 decks
72%synergy
Pack Rat
77%inclusion40 decks52 decks
71%synergy
Phyresis Outbreak
69%inclusion36 decks52 decks
67%synergy
Top Cards
Jet Medallion
81%inclusion42 decks52 decks
19%synergy
Lord Skitter, Sewer King
75%inclusion39 decks52 decks
67%synergy
Dark Ritual
71%inclusion37 decks52 decks
4%synergy
Vraska's Fall
67%inclusion35 decks52 decks
64%synergy
Cover of Darkness
63%inclusion33 decks52 decks
61%synergy
Bontu's Monument
60%inclusion31 decks52 decks
31%synergy
Herald's Horn
58%inclusion30 decks52 decks
52%synergy
Drown in Ichor
58%inclusion30 decks52 decks
54%synergy
Septic Rats
56%inclusion29 decks52 decks
54%synergy
Vraska, Betrayal's Sting
54%inclusion28 decks52 decks
51%synergy
Game Changers
Demonic Tutor
73%inclusion38 decks52 decks
46%synergy
Vampiric Tutor
60%inclusion31 decks52 decks
39%synergy
Bolas's Citadel
29%inclusion15 decks52 decks
0%synergy
Ancient Tomb
17%inclusion9 decks52 decks
6%synergy
Imperial Seal
15%inclusion8 decks52 decks
8%synergy
Necropotence
12%inclusion6 decks52 decks
-3%synergy
The One Ring
7.7%inclusion4 decks52 decks
-2%synergy
Chrome Mox
5.8%inclusion3 decks52 decks
0%synergy
Creatures
Lord Skitter's Butcher
52%inclusion27 decks52 decks
49%synergy
Rancid Rats
50%inclusion26 decks52 decks
47%synergy
Ratcatcher
48%inclusion25 decks52 decks
45%synergy
Rat Colony
46%inclusion24 decks52 decks
41%synergy
Tangled Colony
44%inclusion23 decks52 decks
41%synergy
Crypt Rats
40%inclusion21 decks52 decks
36%synergy
Crypt Ghast
40%inclusion21 decks52 decks
-7%synergy
Stronghold Rats
38%inclusion20 decks52 decks
35%synergy
Changeling Outcast
37%inclusion19 decks52 decks
31%synergy
Typhoid Rats
37%inclusion19 decks52 decks
33%synergy
Wave of Rats
35%inclusion18 decks52 decks
33%synergy
Nashi, Moon Sage's Scion
35%inclusion18 decks52 decks
31%synergy
Ayara, First of Locthwain
33%inclusion17 decks52 decks
7%synergy
Persistent Marshstalker
32%inclusion15 decks47 decks
29%synergy
Ink-Eyes, Servant of Oni
31%inclusion16 decks52 decks
28%synergy
Gnat Miser
31%inclusion16 decks52 decks
28%synergy
Burglar Rat
29%inclusion15 decks52 decks
18%synergy
Species Specialist
29%inclusion15 decks52 decks
25%synergy
Yawgmoth, Thran Physician
27%inclusion14 decks52 decks
17%synergy
Nezumi Informant
25%inclusion13 decks52 decks
18%synergy
Throat Slitter
23%inclusion12 decks52 decks
21%synergy
Roaming Throne
21%inclusion11 decks52 decks
18%synergy
Locust Miser
19%inclusion10 decks52 decks
18%synergy
Chittering Witch
19%inclusion10 decks52 decks
15%synergy
Gray Merchant of Asphodel
17%inclusion9 decks52 decks
-34%synergy
Filth
17%inclusion9 decks52 decks
15%synergy
Voracious Vermin
17%inclusion9 decks52 decks
14%synergy
Pestilence Rats
15%inclusion8 decks52 decks
13%synergy
Valley Rotcaller
15%inclusion7 decks47 decks
12%synergy
Engine Rat
14%inclusion5 decks35 decks
13%synergy
Nezumi Graverobber
13%inclusion7 decks52 decks
12%synergy
Ruthless Radrat
13%inclusion7 decks52 decks
13%synergy
Swarm of Rats
13%inclusion7 decks52 decks
11%synergy
Chittering Skitterling
13%inclusion7 decks52 decks
13%synergy
Nezumi Prowler
13%inclusion7 decks52 decks
12%synergy
Skithiryx, the Blight Dragon
13%inclusion7 decks52 decks
12%synergy
Old Flitterfang
13%inclusion7 decks52 decks
12%synergy
Relentless Rats
12%inclusion6 decks52 decks
10%synergy
Zodiac Rat
12%inclusion6 decks52 decks
11%synergy
Twisted Sewer-Witch
12%inclusion6 decks52 decks
10%synergy
Nezumi Cutthroat
12%inclusion6 decks52 decks
11%synergy
Undercity Dire Rat
11%inclusion3 decks28 decks
9%synergy
Refurbished Familiar
10%inclusion5 decks48 decks
8%synergy
Rotting Rats
10%inclusion5 decks52 decks
6%synergy
Zulaport Cutthroat
10%inclusion5 decks52 decks
-14%synergy
Boggart Trawler
8.2%inclusion4 decks49 decks
-1%synergy
Plague Myr
7.7%inclusion4 decks52 decks
6%synergy
Morbid Opportunist
7.7%inclusion4 decks52 decks
-16%synergy
Crashing Drawbridge
7.7%inclusion4 decks52 decks
5%synergy
Razortooth Rats
7.7%inclusion4 decks52 decks
7%synergy
Instants
Deadly Rollick
50%inclusion26 decks52 decks
26%synergy
Whisper of the Dross
38%inclusion20 decks52 decks
36%synergy
Tainted Strike
38%inclusion20 decks52 decks
35%synergy
Go for the Throat
35%inclusion18 decks52 decks
12%synergy
Malakir Rebirth
35%inclusion18 decks52 decks
12%synergy
Fell the Profane
31%inclusion15 decks49 decks
12%synergy
Village Rites
25%inclusion13 decks52 decks
0%synergy
Grim Affliction
23%inclusion12 decks52 decks
21%synergy
Defile
19%inclusion10 decks52 decks
-17%synergy
Tragic Slip
17%inclusion9 decks52 decks
-3%synergy
Snuff Out
13%inclusion7 decks52 decks
0%synergy
Anoint with Affliction
13%inclusion7 decks52 decks
13%synergy
Bitter Triumph
13%inclusion7 decks52 decks
4%synergy
Infernal Grasp
13%inclusion7 decks52 decks
-12%synergy
Sudden Spoiling
13%inclusion7 decks52 decks
5%synergy
Withering Torment
12%inclusion5 decks43 decks
-20%synergy
Cabal Ritual
12%inclusion6 decks52 decks
-7%synergy
Hero's Downfall
10%inclusion5 decks52 decks
3%synergy
Murder
10%inclusion5 decks52 decks
-1%synergy
Corrupted Conviction
10%inclusion5 decks52 decks
-3%synergy
Hagra Mauling
7.7%inclusion4 decks52 decks
3%synergy
Sheoldred's Edict
7.7%inclusion4 decks52 decks
-7%synergy
Imp's Mischief
7.7%inclusion4 decks52 decks
-17%synergy
Doom Blade
7.7%inclusion4 decks52 decks
0%synergy
Withering Boon
7.7%inclusion4 decks52 decks
3%synergy
Dismember
7.7%inclusion4 decks52 decks
-3%synergy
Breathe Your Last
6.3%inclusion3 decks48 decks
4%synergy
Consuming Corruption
6.1%inclusion3 decks49 decks
-9%synergy
Force of Despair
5.8%inclusion3 decks52 decks
-2%synergy
Not Dead After All
5.8%inclusion3 decks52 decks
-6%synergy
Deadly Dispute
5.8%inclusion3 decks52 decks
-20%synergy
Culling the Weak
5.8%inclusion3 decks52 decks
-10%synergy
Supernatural Stamina
5.8%inclusion3 decks52 decks
-2%synergy
Virulent Wound
5.8%inclusion3 decks52 decks
5%synergy
Foul-Tongue Shriek
5.8%inclusion3 decks52 decks
4%synergy
Plumb the Forbidden
5.8%inclusion3 decks52 decks
1%synergy
Offer Immortality
5.8%inclusion3 decks52 decks
4%synergy
Curtains' Call
5.8%inclusion3 decks52 decks
4%synergy
Zuko's Exile
5.6%inclusion1 decks18 decks
5%synergy
Sorceries
Feed the Swarm
48%inclusion25 decks52 decks
-2%synergy
Kindred Dominance
44%inclusion23 decks52 decks
39%synergy
Swarmyard Massacre
39%inclusion18 decks46 decks
37%synergy
Bloodline Bidding
36%inclusion5 decks14 decks
31%synergy
Patriarch's Bidding
33%inclusion17 decks52 decks
28%synergy
Damnation
27%inclusion14 decks52 decks
6%synergy
Night's Whisper
23%inclusion12 decks52 decks
-2%synergy
Reanimate
23%inclusion12 decks52 decks
-17%synergy
Toxic Deluge
23%inclusion12 decks52 decks
-14%synergy
Plague of Vermin
23%inclusion12 decks52 decks
21%synergy
Sign in Blood
21%inclusion11 decks52 decks
-14%synergy
Revenge of the Rats
20%inclusion8 decks41 decks
16%synergy
Diabolic Intent
19%inclusion10 decks52 decks
4%synergy
Vat Emergence
15%inclusion8 decks52 decks
14%synergy
Agadeem's Awakening
15%inclusion8 decks52 decks
8%synergy
Crippling Fear
15%inclusion8 decks52 decks
12%synergy
Pact of the Serpent
15%inclusion8 decks52 decks
14%synergy
Torment of Hailfire
13%inclusion7 decks52 decks
-2%synergy
Haunting Voyage
12%inclusion6 decks52 decks
10%synergy
Geth's Summons
12%inclusion6 decks52 decks
11%synergy
Grim Tutor
12%inclusion6 decks52 decks
0%synergy
Diabolic Tutor
10%inclusion5 decks52 decks
-5%synergy
Bubbling Muck
10%inclusion5 decks52 decks
-6%synergy
Echoing Return
10%inclusion5 decks52 decks
6%synergy
Read the Bones
10%inclusion5 decks52 decks
-7%synergy
Unearth
7.7%inclusion4 decks52 decks
-1%synergy
Insatiable Avarice
7.7%inclusion4 decks52 decks
-4%synergy
Gruesome Fate
7.7%inclusion4 decks52 decks
6%synergy
Desperate Plea
5.9%inclusion1 decks17 decks
5%synergy
Forever Young
5.8%inclusion3 decks52 decks
4%synergy
Exsanguinate
5.8%inclusion3 decks52 decks
-19%synergy
Caress of Phyrexia
5.8%inclusion3 decks52 decks
5%synergy
Syphon Mind
5.8%inclusion3 decks52 decks
-7%synergy
Beseech the Mirror
5.8%inclusion3 decks52 decks
-1%synergy
Rise of the Dark Realms
5.8%inclusion3 decks52 decks
-7%synergy
Utility Artifacts
Skullclamp
54%inclusion28 decks52 decks
32%synergy
Contagion Engine
33%inclusion17 decks52 decks
31%synergy
Sword of Truth and Justice
29%inclusion15 decks52 decks
28%synergy
Thrumming Stone
29%inclusion15 decks52 decks
25%synergy
Lightning Greaves
29%inclusion15 decks52 decks
-5%synergy
Chronicle of Victory
29%inclusion4 decks14 decks
26%synergy
Vanquisher's Banner
25%inclusion13 decks52 decks
21%synergy
Whip of Erebos
19%inclusion10 decks52 decks
8%synergy
Grafted Exoskeleton
19%inclusion10 decks52 decks
18%synergy
Contagion Clasp
17%inclusion9 decks52 decks
15%synergy
Expedition Map
17%inclusion9 decks52 decks
5%synergy
Coat of Arms
15%inclusion8 decks52 decks
13%synergy
Door of Destinies
15%inclusion8 decks52 decks
13%synergy
Thornbite Staff
15%inclusion8 decks52 decks
13%synergy
The Darkness Crystal
14%inclusion4 decks28 decks
-6%synergy
Gathering Stone
14%inclusion2 decks14 decks
13%synergy
Eldrazi Monument
13%inclusion7 decks52 decks
12%synergy
Akroma's Memorial
12%inclusion6 decks52 decks
11%synergy
Swiftfoot Boots
12%inclusion6 decks52 decks
-20%synergy
Prosthetic Injector
10%inclusion5 decks52 decks
9%synergy
Sensei's Divining Top
7.7%inclusion4 decks52 decks
0%synergy
Ashnod's Altar
7.7%inclusion4 decks52 decks
-12%synergy
Wayfarer's Bauble
5.8%inclusion3 decks52 decks
-10%synergy
Scroll Rack
5.8%inclusion3 decks52 decks
5%synergy
Recon Craft Theta
5.8%inclusion3 decks52 decks
6%synergy
Sword of Hearth and Home
5.8%inclusion3 decks52 decks
4%synergy
Urza's Incubator
5.8%inclusion3 decks52 decks
4%synergy
Enchantments
Phyrexian Arena
44%inclusion23 decks52 decks
4%synergy
Black Market Connections
38%inclusion20 decks52 decks
15%synergy
Grave Pact
37%inclusion19 decks52 decks
17%synergy
Necrogen Communion
27%inclusion14 decks52 decks
25%synergy
Haunted One
25%inclusion13 decks52 decks
22%synergy
Black Market
21%inclusion11 decks52 decks
0%synergy
Oversold Cemetery
19%inclusion10 decks52 decks
14%synergy
Phyresis
17%inclusion9 decks52 decks
15%synergy
Dictate of Erebos
15%inclusion8 decks52 decks
4%synergy
The Meathook Massacre
13%inclusion7 decks52 decks
-4%synergy
Glistening Oil
12%inclusion6 decks52 decks
11%synergy
Dark Prophecy
12%inclusion6 decks52 decks
8%synergy
Phyrexian Reclamation
10%inclusion5 decks52 decks
0%synergy
No Mercy
7.7%inclusion4 decks52 decks
0%synergy
Vampiric Rites
5.8%inclusion3 decks52 decks
0%synergy
Relic Putrescence
5.8%inclusion3 decks52 decks
6%synergy
Bastion of Remembrance
5.8%inclusion3 decks52 decks
-11%synergy
Lord Skitter's Blessing
5.8%inclusion3 decks52 decks
5%synergy
Bad Moon
5.8%inclusion3 decks52 decks
2%synergy
Planeswalkers
Liliana of the Dark Realms
15%inclusion8 decks52 decks
1%synergy
Utility Lands
Cabal Coffers
90%inclusion47 decks52 decks
36%synergy
Urborg, Tomb of Yawgmoth
81%inclusion42 decks52 decks
43%synergy
Nykthos, Shrine to Nyx
79%inclusion41 decks52 decks
49%synergy
Karn's Bastion
67%inclusion35 decks52 decks
63%synergy
Cabal Stronghold
60%inclusion31 decks52 decks
25%synergy
Bojuka Bog
56%inclusion29 decks52 decks
9%synergy
Phyrexian Tower
52%inclusion27 decks52 decks
27%synergy
Three Tree City
45%inclusion21 decks47 decks
40%synergy
Mudflat Village
40%inclusion19 decks48 decks
37%synergy
Shizo, Death's Storehouse
37%inclusion19 decks52 decks
26%synergy
Inkmoth Nexus
33%inclusion17 decks52 decks
32%synergy
Rogue's Passage
33%inclusion17 decks52 decks
14%synergy
Crypt of Agadeem
29%inclusion15 decks52 decks
18%synergy
Witch's Cottage
29%inclusion15 decks52 decks
4%synergy
Takenuma, Abandoned Mire
29%inclusion15 decks52 decks
13%synergy
Castle Locthwain
27%inclusion14 decks52 decks
10%synergy
Reliquary Tower
27%inclusion14 decks52 decks
-3%synergy
Secret Tunnel
22%inclusion4 decks18 decks
21%synergy
Mortuary Mire
21%inclusion11 decks52 decks
8%synergy
War Room
17%inclusion9 decks52 decks
1%synergy
Minas Morgul, Dark Fortress
15%inclusion8 decks52 decks
12%synergy
Urza's Saga
13%inclusion7 decks52 decks
5%synergy
Mutavault
13%inclusion7 decks52 decks
13%synergy
Volrath's Stronghold
13%inclusion7 decks52 decks
10%synergy
Lake of the Dead
10%inclusion5 decks52 decks
4%synergy
Access Tunnel
10%inclusion5 decks52 decks
7%synergy
Deserted Temple
7.7%inclusion4 decks52 decks
3%synergy
Strip Mine
7.7%inclusion4 decks52 decks
5%synergy
Midgar, City of Mako
7.1%inclusion2 decks28 decks
-4%synergy
Westvale Abbey
5.8%inclusion3 decks52 decks
-1%synergy
Vault of Whispers
5.8%inclusion3 decks52 decks
0%synergy
Barren Moor
5.8%inclusion3 decks52 decks
-4%synergy
Vesuva
5.8%inclusion3 decks52 decks
3%synergy
The Black Gate
5.8%inclusion3 decks52 decks
2%synergy
Command Beacon
5.8%inclusion3 decks52 decks
-2%synergy
Temple of the False God
5.8%inclusion3 decks52 decks
-2%synergy
Everglades
5.8%inclusion3 decks52 decks
4%synergy
Mana Artifacts
Sol Ring
83%inclusion43 decks52 decks
-3%synergy
Glistening Sphere
58%inclusion30 decks52 decks
56%synergy
Arcane Signet
40%inclusion21 decks52 decks
-21%synergy
The Soul Stone
35%inclusion8 decks23 decks
20%synergy
Staff of Compleation
33%inclusion17 decks52 decks
31%synergy
Throne of Eldraine
23%inclusion12 decks52 decks
13%synergy
Firdoch Core
21%inclusion3 decks14 decks
21%synergy
Patchwork Banner
17%inclusion8 decks47 decks
13%synergy
Gauntlet of Power
10%inclusion5 decks52 decks
6%synergy
Thought Vessel
10%inclusion5 decks52 decks
-16%synergy
Nyx Lotus
10%inclusion5 decks52 decks
3%synergy
Extraplanar Lens
10%inclusion5 decks52 decks
5%synergy
Caged Sun
7.7%inclusion4 decks52 decks
-4%synergy
Heraldic Banner
7.7%inclusion4 decks52 decks
2%synergy
Mind Stone
7.7%inclusion4 decks52 decks
-21%synergy
Jeweled Lotus
5.8%inclusion3 decks52 decks
4%synergy
Mox Opal
5.8%inclusion3 decks52 decks
2%synergy
White Lotus Tile
5.6%inclusion1 decks18 decks
5%synergy
Lands
Swamp
87%inclusion45 decks52 decks
-9%synergy
Cavern of Souls
60%inclusion31 decks52 decks
53%synergy
Path of Ancestry
38%inclusion20 decks52 decks
33%synergy
Malakir Rebirth
35%inclusion18 decks52 decks
12%synergy
Fell the Profane
31%inclusion15 decks49 decks
12%synergy
Myriad Landscape
17%inclusion9 decks52 decks
-8%synergy
Agadeem's Awakening
15%inclusion8 decks52 decks
8%synergy
Snow-Covered Swamp
15%inclusion8 decks52 decks
9%synergy
Command Tower
12%inclusion6 decks52 decks
6%synergy
Boggart Trawler
8.2%inclusion4 decks49 decks
-1%synergy
Urza's Cave
8.0%inclusion4 decks50 decks
0%synergy
Hagra Mauling
7.7%inclusion4 decks52 decks
3%synergy
Mirrex
7.7%inclusion4 decks52 decks
7%synergy
Prismatic Vista
5.8%inclusion3 decks52 decks
3%synergy
Polluted Delta
5.8%inclusion3 decks52 decks
2%synergy
Bloodstained Mire
5.8%inclusion3 decks52 decks
2%synergy
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