Karumonix, the Rat King (Commander) - Upgraded Infect

Karumonix, the Rat King
Rank #398
83decks
As CommanderAs CardAverage DeckDecks
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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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Blightbelly Rat
88%inclusion73 decks83 decks
85%synergy
Marrow-Gnawer
83%inclusion69 decks83 decks
80%synergy
Ichor Rats
81%inclusion67 decks83 decks
78%synergy
Piper of the Swarm
84%inclusion70 decks83 decks
77%synergy
Infectious Inquiry
80%inclusion66 decks83 decks
77%synergy
Drown in Ichor
76%inclusion63 decks83 decks
72%synergy
Pack Rat
75%inclusion62 decks83 decks
69%synergy
Ogre Slumlord
78%inclusion65 decks83 decks
69%synergy
Vraska's Fall
71%inclusion59 decks83 decks
68%synergy
Lord Skitter, Sewer King
76%inclusion63 decks83 decks
68%synergy
Top Cards
Dark Ritual
77%inclusion64 decks83 decks
10%synergy
Bontu's Monument
67%inclusion56 decks83 decks
39%synergy
Septic Rats
66%inclusion55 decks83 decks
64%synergy
Rancid Rats
61%inclusion51 decks83 decks
59%synergy
Whisper of the Dross
60%inclusion50 decks83 decks
58%synergy
Lord Skitter's Butcher
59%inclusion49 decks83 decks
56%synergy
Persistent Marshstalker
58%inclusion48 decks83 decks
55%synergy
Jet Medallion
58%inclusion48 decks83 decks
-4%synergy
Typhoid Rats
58%inclusion48 decks83 decks
54%synergy
Stronghold Rats
57%inclusion47 decks83 decks
53%synergy
Game Changers
Demonic Tutor
31%inclusion26 decks83 decks
4%synergy
Bolas's Citadel
18%inclusion15 decks83 decks
-10%synergy
Vampiric Tutor
17%inclusion14 decks83 decks
-4%synergy
Creatures
Tangled Colony
55%inclusion46 decks83 decks
52%synergy
Crypt Rats
54%inclusion45 decks83 decks
50%synergy
Voracious Vermin
49%inclusion41 decks83 decks
47%synergy
Rat Colony
49%inclusion41 decks83 decks
44%synergy
Gnat Miser
47%inclusion39 decks83 decks
44%synergy
Ashcoat of the Shadow Swarm
46%inclusion38 decks83 decks
42%synergy
Ratcatcher
45%inclusion37 decks83 decks
41%synergy
Burglar Rat
43%inclusion36 decks83 decks
33%synergy
Wave of Rats
40%inclusion33 decks83 decks
38%synergy
Changeling Outcast
35%inclusion29 decks83 decks
30%synergy
Ink-Eyes, Servant of Oni
34%inclusion28 decks83 decks
31%synergy
Rat King, Pale Piper
32%inclusion12 decks38 decks
28%synergy
Swarm of Rats
31%inclusion26 decks83 decks
29%synergy
Chittering Skitterling
30%inclusion25 decks83 decks
29%synergy
Ruin Rat
30%inclusion25 decks83 decks
29%synergy
Throat Slitter
29%inclusion24 decks83 decks
27%synergy
Engine Rat
28%inclusion23 decks83 decks
26%synergy
Nezumi Informant
28%inclusion23 decks83 decks
21%synergy
Chittering Witch
27%inclusion22 decks83 decks
22%synergy
Nezumi Prowler
27%inclusion22 decks83 decks
25%synergy
Nashi, Moon Sage's Scion
27%inclusion22 decks83 decks
23%synergy
Undercity Dire Rat
25%inclusion18 decks71 decks
24%synergy
Nezumi Cutthroat
25%inclusion21 decks83 decks
25%synergy
Pestilence Rats
24%inclusion20 decks83 decks
22%synergy
Ayara, First of Locthwain
23%inclusion19 decks83 decks
-2%synergy
Species Specialist
23%inclusion19 decks83 decks
19%synergy
Valley Rotcaller
23%inclusion19 decks83 decks
20%synergy
Crypt Ghast
22%inclusion18 decks83 decks
-26%synergy
Rat King, Verminister
21%inclusion9 decks42 decks
18%synergy
Gnawing Vermin
19%inclusion16 decks83 decks
18%synergy
Locust Miser
19%inclusion16 decks83 decks
18%synergy
Rotting Rats
18%inclusion15 decks83 decks
15%synergy
Gray Merchant of Asphodel
17%inclusion14 decks83 decks
-34%synergy
Twisted Sewer-Witch
17%inclusion14 decks83 decks
15%synergy
Refurbished Familiar
16%inclusion13 decks83 decks
14%synergy
Razortooth Rats
16%inclusion13 decks83 decks
15%synergy
Drainpipe Vermin
16%inclusion13 decks83 decks
14%synergy
Nezumi Graverobber
14%inclusion12 decks83 decks
13%synergy
Ravenous Rats
13%inclusion11 decks83 decks
12%synergy
Bog Rats
12%inclusion10 decks83 decks
12%synergy
Relentless Rats
12%inclusion10 decks83 decks
10%synergy
Nezumi Bladeblesser
12%inclusion10 decks83 decks
11%synergy
Okiba-Gang Shinobi
12%inclusion10 decks83 decks
11%synergy
Elephant-Rat
11%inclusion7 decks62 decks
11%synergy
Skullsnatcher
11%inclusion9 decks83 decks
10%synergy
Sinuous Vermin
11%inclusion9 decks83 decks
10%synergy
Chittering Rats
10%inclusion8 decks83 decks
9%synergy
Zodiac Rat
10%inclusion8 decks83 decks
9%synergy
Yawgmoth, Thran Physician
10%inclusion8 decks83 decks
-0%synergy
Ruthless Radrat
8.4%inclusion7 decks83 decks
8%synergy
Instants
Grim Affliction
40%inclusion33 decks83 decks
38%synergy
Village Rites
36%inclusion30 decks83 decks
11%synergy
Defile
35%inclusion29 decks83 decks
-1%synergy
Go for the Throat
33%inclusion27 decks83 decks
10%synergy
Tainted Strike
31%inclusion26 decks83 decks
28%synergy
Withering Torment
27%inclusion22 decks83 decks
-5%synergy
Rat Out
22%inclusion18 decks83 decks
20%synergy
Fell the Profane
20%inclusion17 decks83 decks
1%synergy
Murder
20%inclusion17 decks83 decks
11%synergy
Infernal Grasp
20%inclusion17 decks83 decks
-5%synergy
Deadly Dispute
19%inclusion16 decks83 decks
-7%synergy
Malakir Rebirth
16%inclusion13 decks83 decks
-8%synergy
Corrupted Conviction
16%inclusion13 decks83 decks
3%synergy
Deadly Rollick
14%inclusion12 decks83 decks
-11%synergy
Tragic Slip
14%inclusion12 decks83 decks
-5%synergy
Culling the Weak
13%inclusion11 decks83 decks
-4%synergy
Anoint with Affliction
12%inclusion10 decks83 decks
12%synergy
Sheoldred's Edict
11%inclusion9 decks83 decks
-4%synergy
Cabal Ritual
11%inclusion9 decks83 decks
-8%synergy
Sudden Spoiling
10%inclusion8 decks83 decks
1%synergy
Unbury
9.1%inclusion4 decks44 decks
8%synergy
Hero's Downfall
8.4%inclusion7 decks83 decks
2%synergy
Virulent Wound
8.4%inclusion7 decks83 decks
8%synergy
Hagra Mauling
7.2%inclusion6 decks83 decks
3%synergy
Raise the Draugr
7.2%inclusion6 decks83 decks
6%synergy
Feign Death
7.2%inclusion6 decks83 decks
-1%synergy
Force of Despair
6.0%inclusion5 decks83 decks
-2%synergy
Consuming Corruption
6.0%inclusion5 decks83 decks
-10%synergy
Altar's Reap
6.0%inclusion5 decks83 decks
4%synergy
Bitter Triumph
6.0%inclusion5 decks83 decks
-4%synergy
Foul-Tongue Shriek
6.0%inclusion5 decks83 decks
4%synergy
Sorceries
Phyresis Outbreak
55%inclusion46 decks83 decks
54%synergy
Feed the Swarm
39%inclusion32 decks83 decks
-12%synergy
Revenge of the Rats
37%inclusion31 decks83 decks
34%synergy
Crippling Fear
30%inclusion25 decks83 decks
27%synergy
Kindred Dominance
30%inclusion25 decks83 decks
25%synergy
Patriarch's Bidding
29%inclusion24 decks83 decks
25%synergy
Night's Whisper
28%inclusion23 decks83 decks
3%synergy
Sign in Blood
27%inclusion22 decks83 decks
-9%synergy
Bloodline Bidding
23%inclusion10 decks44 decks
19%synergy
Spread the Sickness
22%inclusion18 decks83 decks
21%synergy
Vat Emergence
20%inclusion17 decks83 decks
19%synergy
Swarmyard Massacre
20%inclusion17 decks83 decks
18%synergy
Diabolic Intent
17%inclusion14 decks83 decks
2%synergy
Diabolic Tutor
16%inclusion13 decks83 decks
2%synergy
Bubbling Muck
14%inclusion12 decks83 decks
-1%synergy
Unearth
14%inclusion12 decks83 decks
6%synergy
Read the Bones
14%inclusion12 decks83 decks
-2%synergy
Echoing Return
13%inclusion11 decks83 decks
10%synergy
Feed the Infection
12%inclusion10 decks83 decks
11%synergy
Fell
12%inclusion10 decks83 decks
9%synergy
Reanimate
12%inclusion10 decks83 decks
-28%synergy
Toxic Deluge
12%inclusion10 decks83 decks
-25%synergy
Caress of Phyrexia
11%inclusion9 decks83 decks
10%synergy
Geth's Summons
11%inclusion9 decks83 decks
10%synergy
In Garruk's Wake
10%inclusion8 decks83 decks
6%synergy
Pact of the Serpent
10%inclusion8 decks83 decks
8%synergy
Blasphemous Edict
8.4%inclusion7 decks83 decks
-8%synergy
Damnation
8.4%inclusion7 decks83 decks
-12%synergy
Plague of Vermin
8.4%inclusion7 decks83 decks
6%synergy
Profane Tutor
7.2%inclusion6 decks83 decks
3%synergy
Grim Tutor
7.2%inclusion6 decks83 decks
-4%synergy
Insatiable Avarice
6.0%inclusion5 decks83 decks
-5%synergy
Eaten Alive
6.0%inclusion5 decks83 decks
3%synergy
Gruesome Fate
6.0%inclusion5 decks83 decks
4%synergy
Shredder's Technique
5.1%inclusion2 decks39 decks
2%synergy
Utility Artifacts
Herald's Horn
48%inclusion40 decks83 decks
43%synergy
Skullclamp
40%inclusion33 decks83 decks
17%synergy
Contagion Clasp
30%inclusion25 decks83 decks
28%synergy
Vanquisher's Banner
25%inclusion21 decks83 decks
21%synergy
Thrumming Stone
20%inclusion17 decks83 decks
16%synergy
Swiftfoot Boots
18%inclusion15 decks83 decks
-13%synergy
Contagion Engine
17%inclusion14 decks83 decks
15%synergy
Coat of Arms
17%inclusion14 decks83 decks
14%synergy
Chronicle of Victory
16%inclusion7 decks45 decks
13%synergy
The Darkness Crystal
14%inclusion10 decks71 decks
-6%synergy
Icon of Ancestry
13%inclusion11 decks83 decks
12%synergy
Door of Destinies
13%inclusion11 decks83 decks
11%synergy
Lightning Greaves
13%inclusion11 decks83 decks
-21%synergy
Whip of Erebos
12%inclusion10 decks83 decks
1%synergy
Grafted Exoskeleton
12%inclusion10 decks83 decks
11%synergy
Gathering Stone
11%inclusion5 decks44 decks
10%synergy
Banner of Kinship
10%inclusion8 decks83 decks
8%synergy
Sword of Truth and Justice
8.4%inclusion7 decks83 decks
8%synergy
Expedition Map
8.4%inclusion7 decks83 decks
-3%synergy
Wayfarer's Bauble
6.0%inclusion5 decks83 decks
-9%synergy
Enchantments
Cover of Darkness
48%inclusion40 decks83 decks
45%synergy
Necrogen Communion
41%inclusion34 decks83 decks
39%synergy
Phyrexian Arena
34%inclusion28 decks83 decks
-6%synergy
Phyresis
22%inclusion18 decks83 decks
20%synergy
Bad Moon
19%inclusion16 decks83 decks
16%synergy
Haunted One
16%inclusion13 decks83 decks
13%synergy
Black Market
14%inclusion12 decks83 decks
-6%synergy
Grave Pact
14%inclusion12 decks83 decks
-5%synergy
Black Market Connections
12%inclusion10 decks83 decks
-12%synergy
Oversold Cemetery
12%inclusion10 decks83 decks
7%synergy
Phyrexian Reclamation
10%inclusion8 decks83 decks
-0%synergy
Glistening Oil
8.4%inclusion7 decks83 decks
8%synergy
Intimidation
8.4%inclusion7 decks83 decks
8%synergy
Tribute to Horobi
7.2%inclusion6 decks83 decks
6%synergy
Vampiric Rites
6.0%inclusion5 decks83 decks
0%synergy
Dictate of Erebos
6.0%inclusion5 decks83 decks
-5%synergy
Lord Skitter's Blessing
6.0%inclusion5 decks83 decks
5%synergy
Planeswalkers
Vraska, Betrayal's Sting
46%inclusion38 decks83 decks
43%synergy
Liliana of the Dark Realms
16%inclusion13 decks83 decks
2%synergy
Utility Lands
Swarmyard
71%inclusion59 decks83 decks
65%synergy
Bojuka Bog
63%inclusion52 decks83 decks
16%synergy
Karn's Bastion
63%inclusion52 decks83 decks
59%synergy
Cabal Coffers
54%inclusion45 decks83 decks
-1%synergy
Mudflat Village
52%inclusion43 decks83 decks
49%synergy
Rogue's Passage
48%inclusion40 decks83 decks
29%synergy
Witch's Cottage
33%inclusion27 decks83 decks
8%synergy
Three Tree City
33%inclusion27 decks83 decks
28%synergy
Urborg, Tomb of Yawgmoth
30%inclusion25 decks83 decks
-7%synergy
Mortuary Mire
28%inclusion23 decks83 decks
15%synergy
Nykthos, Shrine to Nyx
24%inclusion20 decks83 decks
-6%synergy
Reliquary Tower
24%inclusion20 decks83 decks
-6%synergy
Cabal Stronghold
20%inclusion17 decks83 decks
-14%synergy
Access Tunnel
20%inclusion17 decks83 decks
18%synergy
Phyrexian Tower
16%inclusion13 decks83 decks
-10%synergy
Crypt of Agadeem
13%inclusion11 decks83 decks
2%synergy
Secret Tunnel
13%inclusion7 decks53 decks
12%synergy
Barren Moor
12%inclusion10 decks83 decks
3%synergy
War Room
11%inclusion9 decks83 decks
-5%synergy
Castle Locthwain
11%inclusion9 decks83 decks
-6%synergy
Temple of the False God
10%inclusion8 decks83 decks
2%synergy
Desert of the Glorified
8.4%inclusion7 decks83 decks
6%synergy
Takenuma, Abandoned Mire
8.4%inclusion7 decks83 decks
-7%synergy
Shizo, Death's Storehouse
7.2%inclusion6 decks83 decks
-3%synergy
Inkmoth Nexus
7.2%inclusion6 decks83 decks
6%synergy
The Dross Pits
7.2%inclusion6 decks83 decks
6%synergy
Polluted Mire
7.2%inclusion6 decks83 decks
4%synergy
Memorial to Folly
6.0%inclusion5 decks83 decks
3%synergy
Mutavault
6.0%inclusion5 decks83 decks
5%synergy
Mana Artifacts
Sol Ring
86%inclusion71 decks83 decks
-0%synergy
Arcane Signet
51%inclusion42 decks83 decks
-11%synergy
Glistening Sphere
46%inclusion38 decks83 decks
45%synergy
Patchwork Banner
29%inclusion24 decks83 decks
25%synergy
Staff of Compleation
24%inclusion20 decks83 decks
22%synergy
Heraldic Banner
19%inclusion16 decks83 decks
14%synergy
Charcoal Diamond
16%inclusion13 decks83 decks
-6%synergy
Mind Stone
14%inclusion12 decks83 decks
-14%synergy
The Soul Stone
9.4%inclusion6 decks64 decks
-6%synergy
Thought Vessel
7.2%inclusion6 decks83 decks
-18%synergy
Phyrexian Atlas
6.0%inclusion5 decks83 decks
6%synergy
Lands
Swamp
99%inclusion82 decks83 decks
4%synergy
Path of Ancestry
42%inclusion35 decks83 decks
37%synergy
Cavern of Souls
24%inclusion20 decks83 decks
17%synergy
Fell the Profane
20%inclusion17 decks83 decks
1%synergy
Big Apple, 3 a.m.
16%inclusion6 decks38 decks
14%synergy
Malakir Rebirth
16%inclusion13 decks83 decks
-8%synergy
Command Tower
12%inclusion10 decks83 decks
6%synergy
Evolving Wilds
12%inclusion10 decks83 decks
8%synergy
Myriad Landscape
11%inclusion9 decks83 decks
-14%synergy
Escape Tunnel
7.2%inclusion6 decks83 decks
6%synergy
Hagra Mauling
7.2%inclusion6 decks83 decks
3%synergy
Ash Barrens
6.0%inclusion5 decks83 decks
5%synergy
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