Karumonix, the Rat King (Commander) - Infect

Karumonix, the Rat King
Rank #401
493decks
As CommanderAs CardAverage DeckDecks
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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
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Stolen Stark Tech
1.8%inclusion1 decks56 decks
0%synergy
High Synergy Cards
Blightbelly Rat
90%inclusion446 decks493 decks
87%synergy
Piper of the Swarm
88%inclusion434 decks493 decks
81%synergy
Ichor Rats
81%inclusion399 decks493 decks
78%synergy
Infectious Inquiry
79%inclusion388 decks493 decks
76%synergy
Marrow-Gnawer
79%inclusion388 decks493 decks
75%synergy
Pack Rat
79%inclusion391 decks493 decks
73%synergy
Ogre Slumlord
82%inclusion405 decks493 decks
72%synergy
Vraska's Fall
73%inclusion360 decks493 decks
70%synergy
Drown in Ichor
71%inclusion351 decks493 decks
68%synergy
Septic Rats
69%inclusion341 decks493 decks
67%synergy
Top Cards
Lord Skitter, Sewer King
75%inclusion369 decks493 decks
67%synergy
Rancid Rats
69%inclusion340 decks493 decks
67%synergy
Typhoid Rats
66%inclusion325 decks493 decks
62%synergy
Lord Skitter's Butcher
63%inclusion312 decks493 decks
60%synergy
Tangled Colony
61%inclusion299 decks493 decks
58%synergy
Dark Ritual
60%inclusion295 decks493 decks
-7%synergy
Whisper of the Dross
60%inclusion295 decks493 decks
57%synergy
Crypt Rats
59%inclusion290 decks493 decks
54%synergy
Phyresis Outbreak
55%inclusion271 decks493 decks
53%synergy
Bontu's Monument
54%inclusion265 decks493 decks
26%synergy
Game Changers
Demonic Tutor
18%inclusion90 decks493 decks
-9%synergy
Bolas's Citadel
12%inclusion61 decks493 decks
-16%synergy
Vampiric Tutor
12%inclusion61 decks493 decks
-9%synergy
Creatures
Voracious Vermin
53%inclusion261 decks493 decks
50%synergy
Burglar Rat
51%inclusion252 decks493 decks
41%synergy
Stronghold Rats
51%inclusion252 decks493 decks
48%synergy
Persistent Marshstalker
50%inclusion246 decks493 decks
47%synergy
Gnat Miser
46%inclusion228 decks493 decks
44%synergy
Chittering Skitterling
44%inclusion215 decks493 decks
43%synergy
Wave of Rats
43%inclusion214 decks493 decks
42%synergy
Rat Colony
42%inclusion209 decks493 decks
37%synergy
Ratcatcher
42%inclusion208 decks493 decks
39%synergy
Changeling Outcast
41%inclusion203 decks493 decks
36%synergy
Ashcoat of the Shadow Swarm
38%inclusion185 decks493 decks
34%synergy
Ink-Eyes, Servant of Oni
32%inclusion160 decks493 decks
29%synergy
Nezumi Prowler
32%inclusion160 decks493 decks
31%synergy
Chittering Witch
32%inclusion159 decks493 decks
28%synergy
Pestilence Rats
32%inclusion157 decks493 decks
30%synergy
Ruin Rat
31%inclusion155 decks493 decks
30%synergy
Swarm of Rats
31%inclusion154 decks493 decks
29%synergy
Nezumi Informant
30%inclusion148 decks493 decks
24%synergy
Nashi, Moon Sage's Scion
30%inclusion146 decks493 decks
26%synergy
Engine Rat
29%inclusion112 decks381 decks
28%synergy
Rat King, Pale Piper
29%inclusion48 decks164 decks
25%synergy
Rat King, Verminister
29%inclusion55 decks189 decks
26%synergy
Nezumi Cutthroat
29%inclusion143 decks493 decks
28%synergy
Ravenous Rats
25%inclusion124 decks493 decks
23%synergy
Throat Slitter
25%inclusion122 decks493 decks
23%synergy
Gnawing Vermin
24%inclusion120 decks493 decks
23%synergy
Drainpipe Vermin
24%inclusion118 decks493 decks
23%synergy
Twisted Sewer-Witch
23%inclusion114 decks493 decks
22%synergy
Old Flitterfang
23%inclusion111 decks493 decks
21%synergy
Valley Rotcaller
22%inclusion108 decks493 decks
19%synergy
Razortooth Rats
21%inclusion104 decks493 decks
21%synergy
Ruthless Radrat
21%inclusion103 decks493 decks
20%synergy
Locust Miser
20%inclusion100 decks493 decks
19%synergy
Species Specialist
19%inclusion96 decks493 decks
16%synergy
Undercity Dire Rat
18%inclusion59 decks319 decks
17%synergy
Ayara, First of Locthwain
18%inclusion91 decks493 decks
-7%synergy
Rotting Rats
18%inclusion88 decks493 decks
15%synergy
Crypt Ghast
16%inclusion81 decks493 decks
-31%synergy
Nezumi Graverobber
15%inclusion76 decks493 decks
14%synergy
Mukotai Ambusher
15%inclusion76 decks493 decks
15%synergy
Gray Merchant of Asphodel
15%inclusion72 decks493 decks
-36%synergy
Sinuous Vermin
15%inclusion72 decks493 decks
14%synergy
Innocuous Rat
15%inclusion68 decks466 decks
14%synergy
Refurbished Familiar
14%inclusion69 decks493 decks
12%synergy
Skullsnatcher
14%inclusion68 decks493 decks
13%synergy
Okiba-Gang Shinobi
13%inclusion66 decks493 decks
13%synergy
Relentless Rats
13%inclusion64 decks493 decks
11%synergy
Nezumi Bladeblesser
13%inclusion63 decks493 decks
12%synergy
Chittering Rats
11%inclusion53 decks493 decks
10%synergy
Elephant-Rat
11%inclusion29 decks274 decks
10%synergy
Instants
Village Rites
39%inclusion194 decks493 decks
14%synergy
Grim Affliction
37%inclusion184 decks493 decks
36%synergy
Defile
37%inclusion181 decks493 decks
1%synergy
Tainted Strike
32%inclusion159 decks493 decks
29%synergy
Go for the Throat
28%inclusion137 decks493 decks
5%synergy
Rat Out
27%inclusion135 decks493 decks
26%synergy
Anoint with Affliction
25%inclusion123 decks493 decks
24%synergy
Corrupted Conviction
22%inclusion107 decks493 decks
9%synergy
Deadly Dispute
20%inclusion98 decks493 decks
-7%synergy
Infernal Grasp
17%inclusion86 decks493 decks
-8%synergy
Virulent Wound
17%inclusion84 decks493 decks
17%synergy
Murder
16%inclusion81 decks493 decks
7%synergy
Withering Torment
16%inclusion74 decks467 decks
-16%synergy
Tragic Slip
16%inclusion77 decks493 decks
-3%synergy
Fell the Profane
15%inclusion73 decks493 decks
-5%synergy
Malakir Rebirth
12%inclusion59 decks493 decks
-11%synergy
Deadly Rollick
11%inclusion56 decks493 decks
-14%synergy
Raise the Draugr
11%inclusion55 decks493 decks
10%synergy
Consuming Corruption
11%inclusion52 decks493 decks
-5%synergy
Foul-Tongue Shriek
10%inclusion51 decks493 decks
9%synergy
Hero's Downfall
8.5%inclusion42 decks493 decks
2%synergy
Gravepurge
8.1%inclusion40 decks493 decks
7%synergy
Doom Blade
7.5%inclusion37 decks493 decks
0%synergy
Cabal Ritual
6.9%inclusion34 decks493 decks
-12%synergy
Not Dead After All
6.5%inclusion32 decks493 decks
-5%synergy
Bitter Triumph
6.5%inclusion32 decks493 decks
-3%synergy
Culling the Weak
6.3%inclusion31 decks493 decks
-11%synergy
Sudden Spoiling
6.3%inclusion31 decks493 decks
-2%synergy
Offer Immortality
6.1%inclusion30 decks493 decks
4%synergy
Feign Death
6.1%inclusion30 decks493 decks
-2%synergy
Sheoldred's Edict
5.9%inclusion29 decks493 decks
-9%synergy
Undying Malice
5.9%inclusion29 decks493 decks
-4%synergy
Baleful Mastery
5.5%inclusion27 decks493 decks
-2%synergy
Imp's Mischief
5.3%inclusion26 decks493 decks
-20%synergy
Sorceries
Feed the Swarm
40%inclusion195 decks493 decks
-11%synergy
Revenge of the Rats
38%inclusion165 decks439 decks
34%synergy
Vat Emergence
36%inclusion177 decks493 decks
35%synergy
Crippling Fear
33%inclusion163 decks493 decks
30%synergy
Sign in Blood
30%inclusion149 decks493 decks
-5%synergy
Kindred Dominance
27%inclusion134 decks493 decks
23%synergy
Patriarch's Bidding
25%inclusion124 decks493 decks
21%synergy
Swarmyard Massacre
24%inclusion119 decks493 decks
22%synergy
Spread the Sickness
24%inclusion118 decks493 decks
23%synergy
Night's Whisper
22%inclusion110 decks493 decks
-3%synergy
Read the Bones
19%inclusion95 decks493 decks
3%synergy
Bloodline Bidding
19%inclusion37 decks199 decks
15%synergy
Feed the Infection
16%inclusion78 decks493 decks
15%synergy
Caress of Phyrexia
15%inclusion76 decks493 decks
15%synergy
Unearth
15%inclusion74 decks493 decks
6%synergy
Geth's Summons
13%inclusion66 decks493 decks
13%synergy
Diabolic Tutor
13%inclusion65 decks493 decks
-1%synergy
Plague of Vermin
13%inclusion65 decks493 decks
11%synergy
Toxic Deluge
11%inclusion54 decks493 decks
-26%synergy
Victimize
10%inclusion50 decks493 decks
-17%synergy
Lab Rats
10%inclusion49 decks493 decks
9%synergy
Diabolic Intent
10%inclusion47 decks493 decks
-6%synergy
Damnation
10%inclusion47 decks493 decks
-11%synergy
Reanimate
9.3%inclusion46 decks493 decks
-31%synergy
Echoing Return
8.7%inclusion43 decks493 decks
6%synergy
Fell
7.7%inclusion38 decks493 decks
4%synergy
Bubbling Muck
7.5%inclusion37 decks493 decks
-8%synergy
Pact of the Serpent
7.5%inclusion37 decks493 decks
6%synergy
Gruesome Fate
7.3%inclusion36 decks493 decks
5%synergy
Mutilate
7.1%inclusion35 decks493 decks
-9%synergy
Insatiable Avarice
6.9%inclusion34 decks493 decks
-4%synergy
Forever Young
6.5%inclusion32 decks493 decks
5%synergy
Haunting Voyage
5.9%inclusion29 decks493 decks
5%synergy
Return from Extinction
5.7%inclusion28 decks493 decks
5%synergy
Exsanguinate
5.3%inclusion26 decks493 decks
-19%synergy
Grim Tutor
5.3%inclusion26 decks493 decks
-6%synergy
Psychic Whorl
5.1%inclusion25 decks493 decks
5%synergy
Utility Artifacts
Jet Medallion
52%inclusion258 decks493 decks
-10%synergy
Herald's Horn
42%inclusion209 decks493 decks
37%synergy
Contagion Clasp
38%inclusion189 decks493 decks
36%synergy
Skullclamp
31%inclusion152 decks493 decks
9%synergy
Vanquisher's Banner
28%inclusion137 decks493 decks
24%synergy
Contagion Engine
24%inclusion118 decks493 decks
22%synergy
Swiftfoot Boots
19%inclusion95 decks493 decks
-12%synergy
Grafted Exoskeleton
17%inclusion82 decks493 decks
16%synergy
Prosthetic Injector
15%inclusion72 decks493 decks
14%synergy
Thrumming Stone
14%inclusion67 decks493 decks
10%synergy
Whip of Erebos
13%inclusion63 decks493 decks
2%synergy
Lightning Greaves
13%inclusion63 decks493 decks
-21%synergy
Chronicle of Victory
12%inclusion25 decks201 decks
10%synergy
Door of Destinies
12%inclusion61 decks493 decks
10%synergy
Coat of Arms
11%inclusion55 decks493 decks
9%synergy
Icon of Ancestry
11%inclusion52 decks493 decks
10%synergy
Whispersilk Cloak
7.9%inclusion39 decks493 decks
2%synergy
The Darkness Crystal
7.8%inclusion25 decks320 decks
-12%synergy
Banner of Kinship
7.7%inclusion34 decks440 decks
6%synergy
Sword of Truth and Justice
7.1%inclusion35 decks493 decks
6%synergy
Eldrazi Monument
5.7%inclusion28 decks493 decks
4%synergy
Thornbite Staff
5.7%inclusion28 decks493 decks
3%synergy
Wayfarer's Bauble
5.5%inclusion27 decks493 decks
-9%synergy
Ashnod's Altar
5.5%inclusion27 decks493 decks
-14%synergy
Expedition Map
5.3%inclusion26 decks493 decks
-6%synergy
Vat of Rebirth
5.1%inclusion25 decks493 decks
2%synergy
Sword of the Squeak
5.1%inclusion25 decks493 decks
5%synergy
Enchantments
Necrogen Communion
49%inclusion244 decks493 decks
48%synergy
Phyrexian Arena
40%inclusion199 decks493 decks
1%synergy
Cover of Darkness
40%inclusion197 decks493 decks
37%synergy
Phyresis
32%inclusion159 decks493 decks
30%synergy
Oversold Cemetery
20%inclusion101 decks493 decks
15%synergy
Bad Moon
19%inclusion96 decks493 decks
16%synergy
Haunted One
18%inclusion91 decks493 decks
16%synergy
Grave Pact
17%inclusion83 decks493 decks
-3%synergy
Black Market Connections
16%inclusion77 decks493 decks
-9%synergy
Tribute to Horobi
14%inclusion70 decks493 decks
13%synergy
Black Market
14%inclusion68 decks493 decks
-7%synergy
Vampiric Rites
10%inclusion50 decks493 decks
4%synergy
Phyrexian Reclamation
9.3%inclusion46 decks493 decks
-0%synergy
Lord Skitter's Blessing
9.3%inclusion46 decks493 decks
9%synergy
Relic Putrescence
8.5%inclusion42 decks493 decks
8%synergy
Intimidation
8.5%inclusion42 decks493 decks
8%synergy
Glistening Oil
8.3%inclusion41 decks493 decks
8%synergy
Snake Cult Initiation
6.3%inclusion31 decks493 decks
6%synergy
Dictate of Erebos
5.9%inclusion29 decks493 decks
-5%synergy
Planeswalkers
Vraska, Betrayal's Sting
39%inclusion194 decks493 decks
37%synergy
Liliana of the Dark Realms
10%inclusion49 decks493 decks
-4%synergy
Utility Lands
Swarmyard
65%inclusion320 decks493 decks
59%synergy
Karn's Bastion
61%inclusion302 decks493 decks
58%synergy
Bojuka Bog
55%inclusion273 decks493 decks
8%synergy
Rogue's Passage
48%inclusion235 decks493 decks
28%synergy
Mudflat Village
47%inclusion230 decks493 decks
44%synergy
Cabal Coffers
38%inclusion188 decks493 decks
-17%synergy
Witch's Cottage
31%inclusion153 decks493 decks
7%synergy
Mortuary Mire
27%inclusion131 decks493 decks
14%synergy
Cabal Stronghold
25%inclusion122 decks493 decks
-9%synergy
Urborg, Tomb of Yawgmoth
24%inclusion116 decks493 decks
-14%synergy
Access Tunnel
23%inclusion111 decks493 decks
20%synergy
Nykthos, Shrine to Nyx
21%inclusion105 decks493 decks
-8%synergy
Three Tree City
21%inclusion105 decks493 decks
17%synergy
Reliquary Tower
19%inclusion95 decks493 decks
-10%synergy
Phyrexian Tower
16%inclusion78 decks493 decks
-10%synergy
Barren Moor
13%inclusion62 decks493 decks
3%synergy
Crypt of Agadeem
13%inclusion62 decks493 decks
1%synergy
Castle Locthwain
12%inclusion61 decks493 decks
-4%synergy
Secret Tunnel
12%inclusion29 decks238 decks
11%synergy
Shizo, Death's Storehouse
10%inclusion48 decks493 decks
-1%synergy
War Room
9.3%inclusion46 decks493 decks
-7%synergy
Takenuma, Abandoned Mire
7.9%inclusion39 decks493 decks
-8%synergy
Inkmoth Nexus
7.5%inclusion37 decks493 decks
7%synergy
The Dross Pits
7.1%inclusion35 decks493 decks
6%synergy
Temple of the False God
6.9%inclusion34 decks493 decks
-1%synergy
Minas Morgul, Dark Fortress
6.1%inclusion30 decks493 decks
3%synergy
Memorial to Folly
5.1%inclusion25 decks493 decks
2%synergy
Mana Artifacts
Sol Ring
80%inclusion394 decks493 decks
-6%synergy
Glistening Sphere
47%inclusion233 decks493 decks
46%synergy
Arcane Signet
46%inclusion229 decks493 decks
-15%synergy
Staff of Compleation
26%inclusion128 decks493 decks
24%synergy
Patchwork Banner
25%inclusion124 decks493 decks
21%synergy
Charcoal Diamond
17%inclusion85 decks493 decks
-5%synergy
Mind Stone
15%inclusion75 decks493 decks
-13%synergy
Heraldic Banner
14%inclusion68 decks493 decks
9%synergy
Phyrexian Atlas
13%inclusion63 decks493 decks
12%synergy
Caged Sun
8.1%inclusion40 decks493 decks
-2%synergy
The Soul Stone
7.1%inclusion20 decks283 decks
-9%synergy
Commander's Sphere
6.7%inclusion33 decks493 decks
-1%synergy
Thought Vessel
6.1%inclusion30 decks493 decks
-19%synergy
Lands
Swamp
98%inclusion481 decks493 decks
2%synergy
Path of Ancestry
41%inclusion203 decks493 decks
36%synergy
Myriad Landscape
19%inclusion96 decks493 decks
-5%synergy
Cavern of Souls
15%inclusion75 decks493 decks
8%synergy
Fell the Profane
15%inclusion73 decks493 decks
-5%synergy
Big Apple, 3 a.m.
12%inclusion20 decks164 decks
10%synergy
Malakir Rebirth
12%inclusion59 decks493 decks
-11%synergy
Command Tower
10%inclusion47 decks493 decks
4%synergy
Escape Tunnel
8.3%inclusion41 decks493 decks
7%synergy
Evolving Wilds
7.3%inclusion36 decks493 decks
3%synergy
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