Karumonix, the Rat King (Commander) - Core Infect

Karumonix, the Rat King
Rank #393
110decks
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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Arnyn, Deathbloom Botanist
7.1%inclusion1 decks14 decks
5%synergy
Decorum Dissertation
6.7%inclusion1 decks15 decks
1%synergy
High Synergy Cards
Piper of the Swarm
90%inclusion99 decks110 decks
83%synergy
Blightbelly Rat
85%inclusion94 decks110 decks
82%synergy
Infectious Inquiry
79%inclusion87 decks110 decks
76%synergy
Ogre Slumlord
83%inclusion91 decks110 decks
73%synergy
Pack Rat
76%inclusion84 decks110 decks
70%synergy
Typhoid Rats
74%inclusion81 decks110 decks
70%synergy
Ichor Rats
72%inclusion79 decks110 decks
69%synergy
Vraska's Fall
70%inclusion77 decks110 decks
67%synergy
Rancid Rats
68%inclusion75 decks110 decks
66%synergy
Marrow-Gnawer
69%inclusion76 decks110 decks
66%synergy
Top Cards
Lord Skitter, Sewer King
72%inclusion79 decks110 decks
64%synergy
Drown in Ichor
68%inclusion75 decks110 decks
64%synergy
Lord Skitter's Butcher
65%inclusion72 decks110 decks
62%synergy
Septic Rats
60%inclusion66 decks110 decks
58%synergy
Tangled Colony
59%inclusion65 decks110 decks
56%synergy
Crypt Rats
58%inclusion64 decks110 decks
54%synergy
Whisper of the Dross
58%inclusion64 decks110 decks
55%synergy
Dark Ritual
55%inclusion60 decks110 decks
-12%synergy
Voracious Vermin
55%inclusion60 decks110 decks
52%synergy
Phyresis Outbreak
53%inclusion58 decks110 decks
51%synergy
Creatures
Stronghold Rats
51%inclusion56 decks110 decks
47%synergy
Burglar Rat
49%inclusion54 decks110 decks
38%synergy
Chittering Skitterling
47%inclusion52 decks110 decks
46%synergy
Persistent Marshstalker
46%inclusion50 decks108 decks
43%synergy
Wave of Rats
45%inclusion50 decks110 decks
44%synergy
Changeling Outcast
45%inclusion49 decks110 decks
39%synergy
Gnat Miser
45%inclusion49 decks110 decks
42%synergy
Ratcatcher
43%inclusion47 decks110 decks
39%synergy
Rat Colony
43%inclusion47 decks110 decks
37%synergy
Ruin Rat
38%inclusion42 decks110 decks
37%synergy
Nezumi Cutthroat
37%inclusion41 decks110 decks
37%synergy
Ashcoat of the Shadow Swarm
34%inclusion37 decks110 decks
30%synergy
Nezumi Informant
34%inclusion37 decks110 decks
27%synergy
Ink-Eyes, Servant of Oni
33%inclusion36 decks110 decks
30%synergy
Chittering Witch
33%inclusion36 decks110 decks
28%synergy
Pestilence Rats
33%inclusion36 decks110 decks
31%synergy
Nashi, Moon Sage's Scion
33%inclusion36 decks110 decks
29%synergy
Twisted Sewer-Witch
32%inclusion35 decks110 decks
30%synergy
Old Flitterfang
31%inclusion34 decks110 decks
30%synergy
Engine Rat
30%inclusion28 decks93 decks
28%synergy
Ravenous Rats
30%inclusion33 decks110 decks
28%synergy
Gnawing Vermin
30%inclusion33 decks110 decks
29%synergy
Nezumi Prowler
30%inclusion33 decks110 decks
29%synergy
Drainpipe Vermin
29%inclusion32 decks110 decks
28%synergy
Swarm of Rats
27%inclusion30 decks110 decks
25%synergy
Rat King, Pale Piper
26%inclusion9 decks35 decks
22%synergy
Species Specialist
24%inclusion26 decks110 decks
20%synergy
Razortooth Rats
24%inclusion26 decks110 decks
23%synergy
Mukotai Ambusher
23%inclusion25 decks110 decks
22%synergy
Valley Rotcaller
22%inclusion24 decks108 decks
20%synergy
Rotting Rats
22%inclusion24 decks110 decks
19%synergy
Ruthless Radrat
22%inclusion24 decks110 decks
21%synergy
Skullsnatcher
22%inclusion24 decks110 decks
21%synergy
Locust Miser
21%inclusion23 decks110 decks
19%synergy
Throat Slitter
20%inclusion22 decks110 decks
18%synergy
Undercity Dire Rat
19%inclusion15 decks77 decks
18%synergy
Ayara, First of Locthwain
19%inclusion21 decks110 decks
-6%synergy
Crypt Ghast
19%inclusion21 decks110 decks
-28%synergy
Rat King, Verminister
18%inclusion8 decks45 decks
15%synergy
Nezumi Graverobber
17%inclusion19 decks110 decks
16%synergy
Sinuous Vermin
16%inclusion18 decks110 decks
16%synergy
Okiba-Gang Shinobi
16%inclusion18 decks110 decks
15%synergy
Innocuous Rat
15%inclusion15 decks102 decks
14%synergy
Relentless Rats
15%inclusion16 decks110 decks
13%synergy
Refurbished Familiar
13%inclusion14 decks110 decks
11%synergy
Chittering Rats
13%inclusion14 decks110 decks
12%synergy
Gray Merchant of Asphodel
13%inclusion14 decks110 decks
-38%synergy
Nezumi Bladeblesser
13%inclusion14 decks110 decks
12%synergy
Bog Rats
12%inclusion13 decks110 decks
11%synergy
Daggerfang Duo
10%inclusion11 decks108 decks
9%synergy
Instants
Village Rites
45%inclusion50 decks110 decks
20%synergy
Defile
41%inclusion45 decks110 decks
5%synergy
Grim Affliction
35%inclusion38 decks110 decks
33%synergy
Anoint with Affliction
31%inclusion34 decks110 decks
30%synergy
Rat Out
30%inclusion33 decks110 decks
29%synergy
Corrupted Conviction
28%inclusion31 decks110 decks
16%synergy
Go for the Throat
25%inclusion27 decks110 decks
2%synergy
Deadly Dispute
22%inclusion24 decks110 decks
-5%synergy
Virulent Wound
22%inclusion24 decks110 decks
21%synergy
Tainted Strike
22%inclusion24 decks110 decks
19%synergy
Tragic Slip
17%inclusion19 decks110 decks
-2%synergy
Consuming Corruption
16%inclusion18 decks110 decks
1%synergy
Raise the Draugr
15%inclusion16 decks110 decks
14%synergy
Murder
15%inclusion16 decks110 decks
5%synergy
Infernal Grasp
15%inclusion16 decks110 decks
-11%synergy
Withering Torment
14%inclusion14 decks102 decks
-18%synergy
Fell the Profane
13%inclusion14 decks110 decks
-7%synergy
Gravepurge
12%inclusion13 decks110 decks
10%synergy
Deadly Rollick
11%inclusion12 decks110 decks
-14%synergy
Foul-Tongue Shriek
11%inclusion12 decks110 decks
9%synergy
Hero's Downfall
10%inclusion11 decks110 decks
3%synergy
Not Dead After All
10%inclusion11 decks110 decks
-1%synergy
Bitter Triumph
9.1%inclusion10 decks110 decks
-1%synergy
Baleful Mastery
9.1%inclusion10 decks110 decks
1%synergy
Undying Malice
8.2%inclusion9 decks110 decks
-2%synergy
Malakir Rebirth
8.2%inclusion9 decks110 decks
-15%synergy
Feign Death
8.2%inclusion9 decks110 decks
-0%synergy
Offer Immortality
7.3%inclusion8 decks110 decks
5%synergy
Unbury
6.5%inclusion3 decks46 decks
6%synergy
Sheoldred's Edict
6.4%inclusion7 decks110 decks
-9%synergy
Altar's Reap
6.4%inclusion7 decks110 decks
4%synergy
Sudden Spoiling
6.4%inclusion7 decks110 decks
-2%synergy
Dismember
6.4%inclusion7 decks110 decks
-4%synergy
Doom Blade
5.5%inclusion6 decks110 decks
-2%synergy
Cabal Ritual
5.5%inclusion6 decks110 decks
-13%synergy
Darkness
5.5%inclusion6 decks110 decks
-5%synergy
Death Denied
5.5%inclusion6 decks110 decks
5%synergy
Sorceries
Crippling Fear
45%inclusion49 decks110 decks
42%synergy
Feed the Swarm
43%inclusion47 decks110 decks
-8%synergy
Vat Emergence
37%inclusion41 decks110 decks
36%synergy
Revenge of the Rats
35%inclusion35 decks99 decks
32%synergy
Sign in Blood
34%inclusion37 decks110 decks
-2%synergy
Read the Bones
26%inclusion29 decks110 decks
10%synergy
Unearth
25%inclusion27 decks110 decks
16%synergy
Night's Whisper
24%inclusion26 decks110 decks
-1%synergy
Patriarch's Bidding
23%inclusion25 decks110 decks
19%synergy
Kindred Dominance
23%inclusion25 decks110 decks
18%synergy
Spread the Sickness
22%inclusion24 decks110 decks
21%synergy
Swarmyard Massacre
19%inclusion21 decks108 decks
17%synergy
Feed the Infection
19%inclusion21 decks110 decks
18%synergy
Bloodline Bidding
15%inclusion7 decks46 decks
11%synergy
Diabolic Tutor
15%inclusion16 decks110 decks
0%synergy
Victimize
14%inclusion15 decks110 decks
-14%synergy
Caress of Phyrexia
14%inclusion15 decks110 decks
13%synergy
Geth's Summons
13%inclusion14 decks110 decks
12%synergy
Plague of Vermin
13%inclusion14 decks110 decks
10%synergy
Mutilate
10%inclusion11 decks110 decks
-6%synergy
Reanimate
10%inclusion11 decks110 decks
-30%synergy
Toxic Deluge
10%inclusion11 decks110 decks
-27%synergy
Lab Rats
10%inclusion11 decks110 decks
10%synergy
Echoing Return
9.1%inclusion10 decks110 decks
6%synergy
Return from Extinction
8.2%inclusion9 decks110 decks
8%synergy
Exsanguinate
8.2%inclusion9 decks110 decks
-17%synergy
Syphon Mind
8.2%inclusion9 decks110 decks
-4%synergy
Pact of the Serpent
8.2%inclusion9 decks110 decks
7%synergy
Haunting Voyage
7.3%inclusion8 decks110 decks
6%synergy
Forever Young
6.4%inclusion7 decks110 decks
5%synergy
Corrupt
6.4%inclusion7 decks110 decks
4%synergy
Bubbling Muck
5.5%inclusion6 decks110 decks
-10%synergy
Utility Artifacts
Jet Medallion
50%inclusion55 decks110 decks
-12%synergy
Bontu's Monument
48%inclusion53 decks110 decks
20%synergy
Herald's Horn
45%inclusion49 decks110 decks
39%synergy
Contagion Clasp
35%inclusion38 decks110 decks
32%synergy
Vanquisher's Banner
29%inclusion32 decks110 decks
25%synergy
Skullclamp
26%inclusion29 decks110 decks
4%synergy
Contagion Engine
22%inclusion24 decks110 decks
20%synergy
Prosthetic Injector
19%inclusion21 decks110 decks
19%synergy
Swiftfoot Boots
16%inclusion18 decks110 decks
-15%synergy
Whip of Erebos
15%inclusion16 decks110 decks
4%synergy
Door of Destinies
15%inclusion16 decks110 decks
12%synergy
Thrumming Stone
15%inclusion16 decks110 decks
10%synergy
Lightning Greaves
15%inclusion16 decks110 decks
-19%synergy
Whispersilk Cloak
13%inclusion14 decks110 decks
7%synergy
Grafted Exoskeleton
12%inclusion13 decks110 decks
11%synergy
Chronicle of Victory
11%inclusion5 decks47 decks
8%synergy
Icon of Ancestry
10%inclusion11 decks110 decks
9%synergy
Coat of Arms
10%inclusion11 decks110 decks
7%synergy
Vat of Rebirth
9.1%inclusion10 decks110 decks
6%synergy
Wayfarer's Bauble
5.5%inclusion6 decks110 decks
-9%synergy
Ashnod's Altar
5.5%inclusion6 decks110 decks
-14%synergy
Thieves' Tools
5.5%inclusion6 decks110 decks
4%synergy
Enchantments
Necrogen Communion
48%inclusion53 decks110 decks
46%synergy
Phyrexian Arena
35%inclusion38 decks110 decks
-5%synergy
Cover of Darkness
30%inclusion33 decks110 decks
27%synergy
Phyresis
27%inclusion30 decks110 decks
25%synergy
Oversold Cemetery
23%inclusion25 decks110 decks
17%synergy
Bad Moon
18%inclusion20 decks110 decks
15%synergy
Haunted One
16%inclusion18 decks110 decks
14%synergy
Tribute to Horobi
14%inclusion15 decks110 decks
13%synergy
Grave Pact
12%inclusion13 decks110 decks
-8%synergy
Phyrexian Reclamation
11%inclusion12 decks110 decks
1%synergy
Black Market Connections
11%inclusion12 decks110 decks
-13%synergy
Lord Skitter's Blessing
11%inclusion12 decks110 decks
10%synergy
Black Market
10%inclusion11 decks110 decks
-11%synergy
Vampiric Rites
10%inclusion11 decks110 decks
4%synergy
Dictate of Erebos
7.3%inclusion8 decks110 decks
-4%synergy
Intimidation
6.4%inclusion7 decks110 decks
6%synergy
Snake Cult Initiation
6.4%inclusion7 decks110 decks
6%synergy
Glistening Oil
5.5%inclusion6 decks110 decks
5%synergy
Relic Putrescence
5.5%inclusion6 decks110 decks
5%synergy
Planeswalkers
Vraska, Betrayal's Sting
29%inclusion32 decks110 decks
27%synergy
Liliana of the Dark Realms
9.1%inclusion10 decks110 decks
-5%synergy
Utility Lands
Swarmyard
62%inclusion68 decks110 decks
56%synergy
Karn's Bastion
57%inclusion63 decks110 decks
53%synergy
Rogue's Passage
48%inclusion53 decks110 decks
29%synergy
Bojuka Bog
45%inclusion49 decks110 decks
-2%synergy
Mudflat Village
41%inclusion45 decks109 decks
39%synergy
Witch's Cottage
31%inclusion34 decks110 decks
6%synergy
Cabal Coffers
31%inclusion34 decks110 decks
-24%synergy
Cabal Stronghold
28%inclusion31 decks110 decks
-6%synergy
Mortuary Mire
26%inclusion29 decks110 decks
13%synergy
Access Tunnel
25%inclusion27 decks110 decks
22%synergy
Three Tree City
21%inclusion23 decks108 decks
17%synergy
Nykthos, Shrine to Nyx
20%inclusion22 decks110 decks
-10%synergy
Urborg, Tomb of Yawgmoth
18%inclusion20 decks110 decks
-19%synergy
Secret Tunnel
18%inclusion10 decks56 decks
17%synergy
Reliquary Tower
17%inclusion19 decks110 decks
-13%synergy
Barren Moor
16%inclusion18 decks110 decks
7%synergy
Phyrexian Tower
15%inclusion16 decks110 decks
-11%synergy
Crypt of Agadeem
12%inclusion13 decks110 decks
0%synergy
Castle Locthwain
12%inclusion13 decks110 decks
-5%synergy
Shizo, Death's Storehouse
10%inclusion11 decks110 decks
-0%synergy
The Dross Pits
8.2%inclusion9 decks110 decks
7%synergy
Inkmoth Nexus
7.3%inclusion8 decks110 decks
6%synergy
War Room
7.3%inclusion8 decks110 decks
-9%synergy
Minas Morgul, Dark Fortress
7.3%inclusion8 decks110 decks
4%synergy
Takenuma, Abandoned Mire
6.4%inclusion7 decks110 decks
-9%synergy
Temple of the False God
6.4%inclusion7 decks110 decks
-1%synergy
Vesuva
5.5%inclusion6 decks110 decks
3%synergy
Polluted Mire
5.5%inclusion6 decks110 decks
2%synergy
Mana Artifacts
Sol Ring
67%inclusion74 decks110 decks
-18%synergy
Arcane Signet
47%inclusion52 decks110 decks
-14%synergy
Glistening Sphere
45%inclusion50 decks110 decks
44%synergy
Staff of Compleation
25%inclusion28 decks110 decks
24%synergy
Patchwork Banner
23%inclusion25 decks108 decks
19%synergy
Charcoal Diamond
21%inclusion23 decks110 decks
-1%synergy
Mind Stone
19%inclusion21 decks110 decks
-9%synergy
Heraldic Banner
14%inclusion15 decks110 decks
8%synergy
Phyrexian Atlas
14%inclusion15 decks110 decks
13%synergy
Caged Sun
13%inclusion14 decks110 decks
2%synergy
Commander's Sphere
9.1%inclusion10 decks110 decks
1%synergy
Gauntlet of Power
6.4%inclusion7 decks110 decks
3%synergy
Thought Vessel
5.5%inclusion6 decks110 decks
-20%synergy
Lands
Swamp
98%inclusion108 decks110 decks
3%synergy
Path of Ancestry
43%inclusion47 decks110 decks
38%synergy
Myriad Landscape
22%inclusion24 decks110 decks
-3%synergy
Fell the Profane
13%inclusion14 decks110 decks
-7%synergy
Cavern of Souls
12%inclusion13 decks110 decks
5%synergy
Escape Tunnel
11%inclusion12 decks110 decks
10%synergy
Big Apple, 3 a.m.
8.6%inclusion3 decks35 decks
7%synergy
Command Tower
8.2%inclusion9 decks110 decks
3%synergy
Malakir Rebirth
8.2%inclusion9 decks110 decks
-15%synergy
Terramorphic Expanse
5.5%inclusion6 decks110 decks
3%synergy
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