Karumonix, the Rat King (Commander) - Upgraded Infect

Karumonix, the Rat King
Rank #383
78decks
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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Withering Curse
5.6%inclusion1 decks18 decks
3%synergy
High Synergy Cards
Blightbelly Rat
88%inclusion69 decks78 decks
85%synergy
Ichor Rats
83%inclusion65 decks78 decks
80%synergy
Marrow-Gnawer
83%inclusion65 decks78 decks
80%synergy
Infectious Inquiry
82%inclusion64 decks78 decks
79%synergy
Piper of the Swarm
85%inclusion66 decks78 decks
78%synergy
Drown in Ichor
77%inclusion60 decks78 decks
73%synergy
Lord Skitter, Sewer King
79%inclusion62 decks78 decks
71%synergy
Pack Rat
77%inclusion60 decks78 decks
71%synergy
Ogre Slumlord
81%inclusion63 decks78 decks
71%synergy
Vraska's Fall
72%inclusion56 decks78 decks
68%synergy
Top Cards
Dark Ritual
77%inclusion60 decks78 decks
10%synergy
Septic Rats
69%inclusion54 decks78 decks
67%synergy
Rancid Rats
64%inclusion50 decks78 decks
62%synergy
Bontu's Monument
63%inclusion49 decks78 decks
34%synergy
Whisper of the Dross
60%inclusion47 decks78 decks
57%synergy
Phyresis Outbreak
59%inclusion46 decks78 decks
57%synergy
Jet Medallion
59%inclusion46 decks78 decks
-3%synergy
Lord Skitter's Butcher
58%inclusion45 decks78 decks
54%synergy
Typhoid Rats
58%inclusion45 decks78 decks
54%synergy
Stronghold Rats
58%inclusion45 decks78 decks
54%synergy
Game Changers
Demonic Tutor
31%inclusion24 decks78 decks
3%synergy
Bolas's Citadel
18%inclusion14 decks78 decks
-11%synergy
Vampiric Tutor
18%inclusion14 decks78 decks
-3%synergy
Necropotence
6.4%inclusion5 decks78 decks
-8%synergy
Creatures
Persistent Marshstalker
56%inclusion44 decks78 decks
53%synergy
Crypt Rats
55%inclusion43 decks78 decks
51%synergy
Tangled Colony
55%inclusion43 decks78 decks
52%synergy
Voracious Vermin
47%inclusion37 decks78 decks
44%synergy
Gnat Miser
47%inclusion37 decks78 decks
45%synergy
Ratcatcher
46%inclusion36 decks78 decks
43%synergy
Rat Colony
45%inclusion35 decks78 decks
39%synergy
Burglar Rat
44%inclusion34 decks78 decks
33%synergy
Ashcoat of the Shadow Swarm
41%inclusion32 decks78 decks
38%synergy
Rat King, Pale Piper
38%inclusion11 decks29 decks
34%synergy
Wave of Rats
37%inclusion29 decks78 decks
35%synergy
Changeling Outcast
33%inclusion26 decks78 decks
28%synergy
Ruin Rat
32%inclusion25 decks78 decks
31%synergy
Ink-Eyes, Servant of Oni
31%inclusion24 decks78 decks
28%synergy
Chittering Skitterling
31%inclusion24 decks78 decks
30%synergy
Throat Slitter
29%inclusion23 decks78 decks
28%synergy
Swarm of Rats
29%inclusion23 decks78 decks
27%synergy
Nezumi Informant
28%inclusion22 decks78 decks
22%synergy
Chittering Witch
27%inclusion21 decks78 decks
22%synergy
Pestilence Rats
26%inclusion20 decks78 decks
24%synergy
Nashi, Moon Sage's Scion
26%inclusion20 decks78 decks
22%synergy
Undercity Dire Rat
25%inclusion16 decks64 decks
23%synergy
Valley Rotcaller
24%inclusion19 decks78 decks
22%synergy
Nezumi Cutthroat
24%inclusion19 decks78 decks
24%synergy
Nezumi Prowler
24%inclusion19 decks78 decks
23%synergy
Engine Rat
23%inclusion18 decks78 decks
21%synergy
Crypt Ghast
23%inclusion18 decks78 decks
-24%synergy
Ayara, First of Locthwain
22%inclusion17 decks78 decks
-4%synergy
Species Specialist
22%inclusion17 decks78 decks
18%synergy
Gnawing Vermin
21%inclusion16 decks78 decks
19%synergy
Locust Miser
19%inclusion15 decks78 decks
18%synergy
Rat King, Verminister
18%inclusion6 decks33 decks
15%synergy
Rotting Rats
18%inclusion14 decks78 decks
15%synergy
Gray Merchant of Asphodel
17%inclusion13 decks78 decks
-34%synergy
Razortooth Rats
17%inclusion13 decks78 decks
16%synergy
Twisted Sewer-Witch
17%inclusion13 decks78 decks
15%synergy
Refurbished Familiar
14%inclusion11 decks78 decks
12%synergy
Nezumi Graverobber
14%inclusion11 decks78 decks
13%synergy
Ravenous Rats
14%inclusion11 decks78 decks
12%synergy
Drainpipe Vermin
14%inclusion11 decks78 decks
13%synergy
Bog Rats
13%inclusion10 decks78 decks
12%synergy
Okiba-Gang Shinobi
13%inclusion10 decks78 decks
12%synergy
Relentless Rats
12%inclusion9 decks78 decks
10%synergy
Nezumi Bladeblesser
12%inclusion9 decks78 decks
11%synergy
Filth
12%inclusion9 decks78 decks
9%synergy
Skullsnatcher
12%inclusion9 decks78 decks
11%synergy
Yawgmoth, Thran Physician
12%inclusion9 decks78 decks
1%synergy
Chittering Rats
10%inclusion8 decks78 decks
10%synergy
Ruthless Radrat
10%inclusion8 decks78 decks
9%synergy
Zodiac Rat
10%inclusion8 decks78 decks
10%synergy
Instants
Grim Affliction
40%inclusion31 decks78 decks
38%synergy
Village Rites
37%inclusion29 decks78 decks
12%synergy
Defile
36%inclusion28 decks78 decks
0%synergy
Go for the Throat
33%inclusion26 decks78 decks
10%synergy
Tainted Strike
33%inclusion26 decks78 decks
30%synergy
Withering Torment
28%inclusion22 decks78 decks
-3%synergy
Infernal Grasp
26%inclusion20 decks78 decks
0%synergy
Rat Out
24%inclusion19 decks78 decks
23%synergy
Deadly Dispute
22%inclusion17 decks78 decks
-4%synergy
Fell the Profane
19%inclusion15 decks78 decks
0%synergy
Murder
18%inclusion14 decks78 decks
8%synergy
Corrupted Conviction
18%inclusion14 decks78 decks
5%synergy
Anoint with Affliction
17%inclusion13 decks78 decks
16%synergy
Malakir Rebirth
17%inclusion13 decks78 decks
-6%synergy
Deadly Rollick
15%inclusion12 decks78 decks
-9%synergy
Tragic Slip
15%inclusion12 decks78 decks
-4%synergy
Cabal Ritual
12%inclusion9 decks78 decks
-7%synergy
Unbury
11%inclusion4 decks35 decks
11%synergy
Culling the Weak
10%inclusion8 decks78 decks
-6%synergy
Sudden Spoiling
10%inclusion8 decks78 decks
1%synergy
Hero's Downfall
9.0%inclusion7 decks78 decks
2%synergy
Sheoldred's Edict
9.0%inclusion7 decks78 decks
-6%synergy
Not Dead After All
9.0%inclusion7 decks78 decks
-2%synergy
Virulent Wound
7.7%inclusion6 decks78 decks
7%synergy
Feign Death
7.7%inclusion6 decks78 decks
0%synergy
Hagra Mauling
6.4%inclusion5 decks78 decks
2%synergy
Consuming Corruption
6.4%inclusion5 decks78 decks
-9%synergy
Bitter Triumph
6.4%inclusion5 decks78 decks
-3%synergy
Foul-Tongue Shriek
6.4%inclusion5 decks78 decks
5%synergy
Force of Despair
5.1%inclusion4 decks78 decks
-3%synergy
Imp's Mischief
5.1%inclusion4 decks78 decks
-20%synergy
Altar's Reap
5.1%inclusion4 decks78 decks
3%synergy
Extinguish the Light
5.1%inclusion4 decks78 decks
5%synergy
Raise the Draugr
5.1%inclusion4 decks78 decks
4%synergy
Undying Malice
5.1%inclusion4 decks78 decks
-5%synergy
Sorceries
Revenge of the Rats
40%inclusion31 decks78 decks
37%synergy
Feed the Swarm
36%inclusion28 decks78 decks
-15%synergy
Kindred Dominance
33%inclusion26 decks78 decks
29%synergy
Night's Whisper
31%inclusion24 decks78 decks
6%synergy
Sign in Blood
29%inclusion23 decks78 decks
-6%synergy
Bloodline Bidding
29%inclusion10 decks35 decks
24%synergy
Patriarch's Bidding
28%inclusion22 decks78 decks
24%synergy
Crippling Fear
28%inclusion22 decks78 decks
25%synergy
Swarmyard Massacre
23%inclusion18 decks78 decks
21%synergy
Spread the Sickness
21%inclusion16 decks78 decks
20%synergy
Diabolic Intent
19%inclusion15 decks78 decks
4%synergy
Vat Emergence
19%inclusion15 decks78 decks
18%synergy
Read the Bones
17%inclusion13 decks78 decks
0%synergy
Diabolic Tutor
15%inclusion12 decks78 decks
1%synergy
Unearth
15%inclusion12 decks78 decks
7%synergy
Echoing Return
15%inclusion12 decks78 decks
12%synergy
Reanimate
15%inclusion12 decks78 decks
-24%synergy
Bubbling Muck
14%inclusion11 decks78 decks
-1%synergy
Feed the Infection
14%inclusion11 decks78 decks
13%synergy
Toxic Deluge
14%inclusion11 decks78 decks
-23%synergy
Fell
12%inclusion9 decks78 decks
8%synergy
Caress of Phyrexia
10%inclusion8 decks78 decks
10%synergy
Geth's Summons
10%inclusion8 decks78 decks
10%synergy
Splinter's Technique
9.1%inclusion3 decks33 decks
7%synergy
In Garruk's Wake
9.0%inclusion7 decks78 decks
5%synergy
Insatiable Avarice
9.0%inclusion7 decks78 decks
-3%synergy
Pact of the Serpent
9.0%inclusion7 decks78 decks
7%synergy
Profane Tutor
7.7%inclusion6 decks78 decks
3%synergy
Damnation
7.7%inclusion6 decks78 decks
-13%synergy
Grim Tutor
7.7%inclusion6 decks78 decks
-4%synergy
Plague of Vermin
7.7%inclusion6 decks78 decks
5%synergy
Shredder's Technique
6.7%inclusion2 decks30 decks
3%synergy
Unmarked Grave
6.4%inclusion5 decks78 decks
2%synergy
Mutilate
6.4%inclusion5 decks78 decks
-10%synergy
Blasphemous Edict
6.4%inclusion5 decks78 decks
-10%synergy
Black Sun's Zenith
5.1%inclusion4 decks78 decks
0%synergy
Victimize
5.1%inclusion4 decks78 decks
-22%synergy
Haunting Voyage
5.1%inclusion4 decks78 decks
4%synergy
Exsanguinate
5.1%inclusion4 decks78 decks
-20%synergy
Syphon Mind
5.1%inclusion4 decks78 decks
-7%synergy
Lab Rats
5.1%inclusion4 decks78 decks
5%synergy
Gruesome Fate
5.1%inclusion4 decks78 decks
3%synergy
Eaten Alive
5.1%inclusion4 decks78 decks
2%synergy
Rise of the Dark Realms
5.1%inclusion4 decks78 decks
-8%synergy
Utility Artifacts
Herald's Horn
51%inclusion40 decks78 decks
46%synergy
Skullclamp
38%inclusion30 decks78 decks
16%synergy
Contagion Clasp
29%inclusion23 decks78 decks
27%synergy
Vanquisher's Banner
27%inclusion21 decks78 decks
23%synergy
Thrumming Stone
22%inclusion17 decks78 decks
18%synergy
Swiftfoot Boots
18%inclusion14 decks78 decks
-13%synergy
Icon of Ancestry
17%inclusion13 decks78 decks
16%synergy
Contagion Engine
17%inclusion13 decks78 decks
15%synergy
Coat of Arms
17%inclusion13 decks78 decks
14%synergy
Grafted Exoskeleton
15%inclusion12 decks78 decks
14%synergy
Door of Destinies
14%inclusion11 decks78 decks
12%synergy
Chronicle of Victory
14%inclusion5 decks36 decks
11%synergy
Expedition Map
13%inclusion10 decks78 decks
1%synergy
Whip of Erebos
12%inclusion9 decks78 decks
1%synergy
The Darkness Crystal
11%inclusion7 decks64 decks
-9%synergy
Lightning Greaves
10%inclusion8 decks78 decks
-23%synergy
Sword of Truth and Justice
9.0%inclusion7 decks78 decks
8%synergy
Banner of Kinship
9.0%inclusion7 decks78 decks
7%synergy
Wayfarer's Bauble
6.4%inclusion5 decks78 decks
-9%synergy
Prosthetic Injector
6.4%inclusion5 decks78 decks
6%synergy
Gathering Stone
5.7%inclusion2 decks35 decks
4%synergy
Ashnod's Altar
5.1%inclusion4 decks78 decks
-15%synergy
Whispersilk Cloak
5.1%inclusion4 decks78 decks
-1%synergy
Enchantments
Cover of Darkness
50%inclusion39 decks78 decks
47%synergy
Necrogen Communion
45%inclusion35 decks78 decks
43%synergy
Phyrexian Arena
37%inclusion29 decks78 decks
-2%synergy
Phyresis
26%inclusion20 decks78 decks
24%synergy
Bad Moon
21%inclusion16 decks78 decks
17%synergy
Haunted One
17%inclusion13 decks78 decks
14%synergy
Black Market
13%inclusion10 decks78 decks
-8%synergy
Grave Pact
13%inclusion10 decks78 decks
-7%synergy
Black Market Connections
13%inclusion10 decks78 decks
-11%synergy
Oversold Cemetery
10%inclusion8 decks78 decks
5%synergy
Phyrexian Reclamation
9.0%inclusion7 decks78 decks
-1%synergy
Glistening Oil
7.7%inclusion6 decks78 decks
7%synergy
Vampiric Rites
7.7%inclusion6 decks78 decks
2%synergy
Intimidation
7.7%inclusion6 decks78 decks
7%synergy
Lord Skitter's Blessing
7.7%inclusion6 decks78 decks
7%synergy
Tribute to Horobi
6.4%inclusion5 decks78 decks
5%synergy
Dictate of Erebos
5.1%inclusion4 decks78 decks
-6%synergy
Snake Cult Initiation
5.1%inclusion4 decks78 decks
5%synergy
No Mercy
5.1%inclusion4 decks78 decks
-2%synergy
Planeswalkers
Vraska, Betrayal's Sting
42%inclusion33 decks78 decks
40%synergy
Liliana of the Dark Realms
15%inclusion12 decks78 decks
1%synergy
Utility Lands
Swarmyard
72%inclusion56 decks78 decks
66%synergy
Karn's Bastion
67%inclusion52 decks78 decks
63%synergy
Bojuka Bog
63%inclusion49 decks78 decks
16%synergy
Cabal Coffers
58%inclusion45 decks78 decks
3%synergy
Mudflat Village
55%inclusion43 decks78 decks
52%synergy
Rogue's Passage
53%inclusion41 decks78 decks
34%synergy
Three Tree City
36%inclusion28 decks78 decks
31%synergy
Urborg, Tomb of Yawgmoth
33%inclusion26 decks78 decks
-4%synergy
Witch's Cottage
29%inclusion23 decks78 decks
5%synergy
Mortuary Mire
27%inclusion21 decks78 decks
14%synergy
Cabal Stronghold
24%inclusion19 decks78 decks
-10%synergy
Nykthos, Shrine to Nyx
24%inclusion19 decks78 decks
-5%synergy
Reliquary Tower
22%inclusion17 decks78 decks
-8%synergy
Access Tunnel
22%inclusion17 decks78 decks
19%synergy
Secret Tunnel
18%inclusion8 decks44 decks
17%synergy
Phyrexian Tower
18%inclusion14 decks78 decks
-7%synergy
Crypt of Agadeem
17%inclusion13 decks78 decks
5%synergy
War Room
13%inclusion10 decks78 decks
-3%synergy
Castle Locthwain
13%inclusion10 decks78 decks
-4%synergy
Barren Moor
12%inclusion9 decks78 decks
2%synergy
Takenuma, Abandoned Mire
10%inclusion8 decks78 decks
-5%synergy
Desert of the Glorified
9.0%inclusion7 decks78 decks
6%synergy
Inkmoth Nexus
9.0%inclusion7 decks78 decks
8%synergy
Temple of the False God
9.0%inclusion7 decks78 decks
1%synergy
Shizo, Death's Storehouse
7.7%inclusion6 decks78 decks
-2%synergy
Mutavault
7.7%inclusion6 decks78 decks
7%synergy
The Dross Pits
7.7%inclusion6 decks78 decks
6%synergy
Minas Morgul, Dark Fortress
6.4%inclusion5 decks78 decks
3%synergy
Polluted Mire
6.4%inclusion5 decks78 decks
3%synergy
Peat Bog
6.4%inclusion5 decks78 decks
4%synergy
The Black Gate
5.1%inclusion4 decks78 decks
2%synergy
Deserted Temple
5.1%inclusion4 decks78 decks
1%synergy
Mana Artifacts
Sol Ring
86%inclusion67 decks78 decks
0%synergy
Arcane Signet
50%inclusion39 decks78 decks
-12%synergy
Glistening Sphere
49%inclusion38 decks78 decks
48%synergy
Patchwork Banner
28%inclusion22 decks78 decks
24%synergy
Staff of Compleation
27%inclusion21 decks78 decks
25%synergy
Heraldic Banner
19%inclusion15 decks78 decks
14%synergy
Charcoal Diamond
17%inclusion13 decks78 decks
-6%synergy
Mind Stone
15%inclusion12 decks78 decks
-13%synergy
The Soul Stone
11%inclusion6 decks56 decks
-4%synergy
Phyrexian Atlas
7.7%inclusion6 decks78 decks
7%synergy
Thought Vessel
6.4%inclusion5 decks78 decks
-19%synergy
Commander's Sphere
5.1%inclusion4 decks78 decks
-3%synergy
Lands
Swamp
100%inclusion78 decks78 decks
5%synergy
Path of Ancestry
42%inclusion33 decks78 decks
37%synergy
Cavern of Souls
26%inclusion20 decks78 decks
19%synergy
Fell the Profane
19%inclusion15 decks78 decks
0%synergy
Big Apple, 3 a.m.
17%inclusion5 decks29 decks
15%synergy
Malakir Rebirth
17%inclusion13 decks78 decks
-6%synergy
Command Tower
13%inclusion10 decks78 decks
7%synergy
Evolving Wilds
12%inclusion9 decks78 decks
8%synergy
Myriad Landscape
10%inclusion8 decks78 decks
-15%synergy
Hagra Mauling
6.4%inclusion5 decks78 decks
2%synergy
Escape Tunnel
6.4%inclusion5 decks78 decks
5%synergy
Ash Barrens
6.4%inclusion5 decks78 decks
5%synergy
Urza's Cave
5.1%inclusion4 decks78 decks
-3%synergy
Mirrex
5.1%inclusion4 decks78 decks
5%synergy
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