Karumonix, the Rat King (Commander) - Core Infect

Karumonix, the Rat King
Rank #412
120decks
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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Supper for Spiders
4.5%inclusion1 decks22 decks
4%synergy
My Precious
2.9%inclusion1 decks34 decks
-0%synergy
High Synergy Cards
Piper of the Swarm
90%inclusion108 decks120 decks
83%synergy
Blightbelly Rat
86%inclusion103 decks120 decks
83%synergy
Infectious Inquiry
78%inclusion93 decks120 decks
75%synergy
Ogre Slumlord
83%inclusion99 decks120 decks
73%synergy
Ichor Rats
74%inclusion89 decks120 decks
71%synergy
Pack Rat
76%inclusion91 decks120 decks
70%synergy
Marrow-Gnawer
72%inclusion86 decks120 decks
68%synergy
Typhoid Rats
72%inclusion86 decks120 decks
68%synergy
Drown in Ichor
70%inclusion84 decks120 decks
67%synergy
Lord Skitter, Sewer King
73%inclusion88 decks120 decks
65%synergy
Top Cards
Rancid Rats
67%inclusion80 decks120 decks
64%synergy
Vraska's Fall
67%inclusion80 decks120 decks
64%synergy
Lord Skitter's Butcher
63%inclusion76 decks120 decks
60%synergy
Septic Rats
63%inclusion75 decks120 decks
61%synergy
Tangled Colony
61%inclusion73 decks120 decks
58%synergy
Whisper of the Dross
57%inclusion69 decks120 decks
55%synergy
Crypt Rats
56%inclusion67 decks120 decks
52%synergy
Voracious Vermin
55%inclusion66 decks120 decks
52%synergy
Phyresis Outbreak
52%inclusion62 decks120 decks
50%synergy
Dark Ritual
51%inclusion61 decks120 decks
-17%synergy
Creatures
Stronghold Rats
51%inclusion61 decks120 decks
47%synergy
Persistent Marshstalker
50%inclusion60 decks120 decks
47%synergy
Burglar Rat
48%inclusion57 decks120 decks
37%synergy
Chittering Skitterling
45%inclusion54 decks120 decks
44%synergy
Rat Colony
45%inclusion54 decks120 decks
40%synergy
Changeling Outcast
44%inclusion53 decks120 decks
39%synergy
Wave of Rats
43%inclusion51 decks120 decks
41%synergy
Gnat Miser
40%inclusion48 decks120 decks
37%synergy
Ratcatcher
39%inclusion47 decks120 decks
36%synergy
Ashcoat of the Shadow Swarm
37%inclusion44 decks120 decks
33%synergy
Nezumi Cutthroat
36%inclusion43 decks120 decks
35%synergy
Rat King, Pale Piper
36%inclusion20 decks56 decks
32%synergy
Pestilence Rats
34%inclusion41 decks120 decks
32%synergy
Ruin Rat
34%inclusion41 decks120 decks
33%synergy
Chittering Witch
32%inclusion38 decks120 decks
27%synergy
Ink-Eyes, Servant of Oni
31%inclusion37 decks120 decks
28%synergy
Nezumi Prowler
31%inclusion37 decks120 decks
30%synergy
Rat King, Verminister
30%inclusion20 decks66 decks
27%synergy
Twisted Sewer-Witch
30%inclusion36 decks120 decks
29%synergy
Nezumi Informant
30%inclusion36 decks120 decks
24%synergy
Engine Rat
29%inclusion33 decks112 decks
28%synergy
Swarm of Rats
28%inclusion34 decks120 decks
26%synergy
Nashi, Moon Sage's Scion
27%inclusion32 decks120 decks
23%synergy
Old Flitterfang
27%inclusion32 decks120 decks
26%synergy
Drainpipe Vermin
26%inclusion31 decks120 decks
25%synergy
Ravenous Rats
24%inclusion29 decks120 decks
23%synergy
Gnawing Vermin
24%inclusion29 decks120 decks
23%synergy
Species Specialist
23%inclusion28 decks120 decks
20%synergy
Razortooth Rats
23%inclusion28 decks120 decks
23%synergy
Valley Rotcaller
23%inclusion27 decks120 decks
20%synergy
Ruthless Radrat
22%inclusion26 decks120 decks
21%synergy
Ayara, First of Locthwain
22%inclusion26 decks120 decks
-3%synergy
Rotting Rats
21%inclusion25 decks120 decks
18%synergy
Mukotai Ambusher
20%inclusion24 decks120 decks
19%synergy
Skullsnatcher
20%inclusion24 decks120 decks
19%synergy
Undercity Dire Rat
20%inclusion19 decks96 decks
18%synergy
Throat Slitter
19%inclusion23 decks120 decks
18%synergy
Locust Miser
18%inclusion22 decks120 decks
17%synergy
Crypt Ghast
17%inclusion20 decks120 decks
-30%synergy
Nezumi Graverobber
15%inclusion18 decks120 decks
14%synergy
Nezumi Bladeblesser
15%inclusion18 decks120 decks
14%synergy
Okiba-Gang Shinobi
15%inclusion18 decks120 decks
14%synergy
Chittering Rats
14%inclusion17 decks120 decks
14%synergy
Innocuous Rat
14%inclusion17 decks120 decks
13%synergy
Refurbished Familiar
13%inclusion16 decks120 decks
11%synergy
Relentless Rats
13%inclusion16 decks120 decks
12%synergy
Sinuous Vermin
13%inclusion16 decks120 decks
13%synergy
Gray Merchant of Asphodel
12%inclusion14 decks120 decks
-38%synergy
Scrib Nibblers
11%inclusion13 decks120 decks
10%synergy
Bog Rats
9.2%inclusion11 decks120 decks
9%synergy
Instants
Village Rites
43%inclusion51 decks120 decks
17%synergy
Defile
38%inclusion46 decks120 decks
3%synergy
Grim Affliction
36%inclusion43 decks120 decks
34%synergy
Rat Out
29%inclusion35 decks120 decks
28%synergy
Anoint with Affliction
28%inclusion33 decks120 decks
27%synergy
Tainted Strike
25%inclusion30 decks120 decks
22%synergy
Corrupted Conviction
25%inclusion30 decks120 decks
13%synergy
Virulent Wound
23%inclusion28 decks120 decks
23%synergy
Deadly Dispute
23%inclusion27 decks120 decks
-5%synergy
Go for the Throat
21%inclusion25 decks120 decks
-2%synergy
Infernal Grasp
18%inclusion21 decks120 decks
-8%synergy
Tragic Slip
16%inclusion19 decks120 decks
-3%synergy
Consuming Corruption
15%inclusion18 decks120 decks
-0%synergy
Raise the Draugr
15%inclusion18 decks120 decks
14%synergy
Fell the Profane
14%inclusion17 decks120 decks
-6%synergy
Withering Torment
14%inclusion17 decks120 decks
-18%synergy
Malakir Rebirth
13%inclusion15 decks120 decks
-11%synergy
Not Dead After All
12%inclusion14 decks120 decks
0%synergy
Murder
12%inclusion14 decks120 decks
2%synergy
Deadly Rollick
11%inclusion13 decks120 decks
-15%synergy
Gravepurge
11%inclusion13 decks120 decks
9%synergy
Foul-Tongue Shriek
10%inclusion12 decks120 decks
8%synergy
Undying Malice
8.3%inclusion10 decks120 decks
-2%synergy
Cabal Ritual
7.5%inclusion9 decks120 decks
-11%synergy
Bitter Triumph
7.5%inclusion9 decks120 decks
-3%synergy
Baleful Mastery
7.5%inclusion9 decks120 decks
-0%synergy
Hero's Downfall
6.7%inclusion8 decks120 decks
0%synergy
Supernatural Stamina
6.7%inclusion8 decks120 decks
-1%synergy
Altar's Reap
6.7%inclusion8 decks120 decks
4%synergy
Sudden Spoiling
6.7%inclusion8 decks120 decks
-1%synergy
Feign Death
6.7%inclusion8 decks120 decks
-2%synergy
Imp's Mischief
5.8%inclusion7 decks120 decks
-20%synergy
Doom Blade
5.8%inclusion7 decks120 decks
-1%synergy
Death Denied
5.8%inclusion7 decks120 decks
5%synergy
Sheoldred's Edict
5.0%inclusion6 decks120 decks
-10%synergy
Culling the Weak
5.0%inclusion6 decks120 decks
-13%synergy
Offer Immortality
5.0%inclusion6 decks120 decks
3%synergy
Dismember
5.0%inclusion6 decks120 decks
-5%synergy
Sorceries
Crippling Fear
43%inclusion52 decks120 decks
41%synergy
Feed the Swarm
42%inclusion50 decks120 decks
-9%synergy
Revenge of the Rats
39%inclusion46 decks118 decks
36%synergy
Vat Emergence
38%inclusion45 decks120 decks
36%synergy
Sign in Blood
34%inclusion41 decks120 decks
-1%synergy
Kindred Dominance
27%inclusion32 decks120 decks
22%synergy
Unearth
26%inclusion31 decks120 decks
17%synergy
Night's Whisper
26%inclusion31 decks120 decks
0%synergy
Spread the Sickness
23%inclusion28 decks120 decks
23%synergy
Read the Bones
23%inclusion27 decks120 decks
7%synergy
Patriarch's Bidding
22%inclusion26 decks120 decks
18%synergy
Swarmyard Massacre
22%inclusion26 decks120 decks
19%synergy
Victimize
17%inclusion20 decks120 decks
-11%synergy
Feed the Infection
16%inclusion19 decks120 decks
15%synergy
Caress of Phyrexia
16%inclusion19 decks120 decks
15%synergy
Bloodline Bidding
13%inclusion9 decks67 decks
10%synergy
Geth's Summons
13%inclusion16 decks120 decks
13%synergy
Diabolic Tutor
13%inclusion15 decks120 decks
-1%synergy
Plague of Vermin
13%inclusion15 decks120 decks
10%synergy
Echoing Return
11%inclusion13 decks120 decks
8%synergy
Toxic Deluge
11%inclusion13 decks120 decks
-26%synergy
Reanimate
10%inclusion12 decks120 decks
-31%synergy
Return from Extinction
8.3%inclusion10 decks120 decks
8%synergy
Mutilate
8.3%inclusion10 decks120 decks
-7%synergy
Exsanguinate
8.3%inclusion10 decks120 decks
-16%synergy
Decorum Dissertation
7.7%inclusion3 decks39 decks
2%synergy
Syphon Mind
7.5%inclusion9 decks120 decks
-4%synergy
Lab Rats
7.5%inclusion9 decks120 decks
7%synergy
Pact of the Serpent
7.5%inclusion9 decks120 decks
6%synergy
Haunting Voyage
6.7%inclusion8 decks120 decks
6%synergy
Bubbling Muck
6.7%inclusion8 decks120 decks
-9%synergy
Ambition's Cost
5.8%inclusion7 decks120 decks
3%synergy
Gruesome Fate
5.8%inclusion7 decks120 decks
4%synergy
Diabolic Intent
5.0%inclusion6 decks120 decks
-10%synergy
Agadeem's Awakening
5.0%inclusion6 decks120 decks
-3%synergy
Profane Command
5.0%inclusion6 decks120 decks
3%synergy
Fell
5.0%inclusion6 decks120 decks
2%synergy
Living Death
5.0%inclusion6 decks120 decks
-5%synergy
Corrupt
5.0%inclusion6 decks120 decks
3%synergy
Utility Artifacts
Jet Medallion
48%inclusion57 decks120 decks
-15%synergy
Bontu's Monument
44%inclusion53 decks120 decks
16%synergy
Herald's Horn
42%inclusion50 decks120 decks
36%synergy
Contagion Clasp
33%inclusion39 decks120 decks
30%synergy
Skullclamp
27%inclusion32 decks120 decks
4%synergy
Vanquisher's Banner
26%inclusion31 decks120 decks
22%synergy
Contagion Engine
22%inclusion26 decks120 decks
20%synergy
Prosthetic Injector
16%inclusion19 decks120 decks
16%synergy
Swiftfoot Boots
15%inclusion18 decks120 decks
-16%synergy
Thrumming Stone
14%inclusion17 decks120 decks
10%synergy
Whispersilk Cloak
13%inclusion16 decks120 decks
7%synergy
Icon of Ancestry
13%inclusion15 decks120 decks
12%synergy
Door of Destinies
13%inclusion15 decks120 decks
10%synergy
Lightning Greaves
13%inclusion15 decks120 decks
-21%synergy
Grafted Exoskeleton
13%inclusion15 decks120 decks
11%synergy
Whip of Erebos
11%inclusion13 decks120 decks
-0%synergy
Vat of Rebirth
10%inclusion12 decks120 decks
7%synergy
Coat of Arms
10%inclusion12 decks120 decks
8%synergy
Chronicle of Victory
7.4%inclusion5 decks68 decks
5%synergy
Wayfarer's Bauble
6.7%inclusion8 decks120 decks
-8%synergy
The Darkness Crystal
6.3%inclusion6 decks96 decks
-14%synergy
Banner of Kinship
5.1%inclusion6 decks118 decks
3%synergy
Ashnod's Altar
5.0%inclusion6 decks120 decks
-15%synergy
Trailblazer's Boots
5.0%inclusion6 decks120 decks
2%synergy
Sword of the Squeak
5.0%inclusion6 decks120 decks
4%synergy
Urza's Incubator
5.0%inclusion6 decks120 decks
3%synergy
Enchantments
Necrogen Communion
48%inclusion57 decks120 decks
46%synergy
Cover of Darkness
36%inclusion43 decks120 decks
33%synergy
Phyrexian Arena
33%inclusion39 decks120 decks
-7%synergy
Phyresis
30%inclusion36 decks120 decks
28%synergy
Oversold Cemetery
23%inclusion27 decks120 decks
17%synergy
Bad Moon
17%inclusion20 decks120 decks
14%synergy
Tribute to Horobi
15%inclusion18 decks120 decks
14%synergy
Haunted One
14%inclusion17 decks120 decks
12%synergy
Phyrexian Reclamation
12%inclusion14 decks120 decks
2%synergy
Lord Skitter's Blessing
12%inclusion14 decks120 decks
11%synergy
Grave Pact
11%inclusion13 decks120 decks
-9%synergy
Vampiric Rites
10%inclusion12 decks120 decks
4%synergy
Black Market Connections
10%inclusion12 decks120 decks
-15%synergy
Black Market
9.2%inclusion11 decks120 decks
-11%synergy
Relic Putrescence
9.2%inclusion11 decks120 decks
9%synergy
Dictate of Erebos
7.5%inclusion9 decks120 decks
-3%synergy
Snake Cult Initiation
7.5%inclusion9 decks120 decks
7%synergy
Glistening Oil
6.7%inclusion8 decks120 decks
6%synergy
Intimidation
6.7%inclusion8 decks120 decks
6%synergy
Planeswalkers
Vraska, Betrayal's Sting
33%inclusion39 decks120 decks
30%synergy
Liliana of the Dark Realms
7.5%inclusion9 decks120 decks
-6%synergy
Utility Lands
Swarmyard
63%inclusion75 decks120 decks
57%synergy
Karn's Bastion
55%inclusion66 decks120 decks
51%synergy
Bojuka Bog
45%inclusion54 decks120 decks
-2%synergy
Rogue's Passage
45%inclusion54 decks120 decks
25%synergy
Mudflat Village
44%inclusion53 decks120 decks
41%synergy
Cabal Coffers
33%inclusion40 decks120 decks
-21%synergy
Witch's Cottage
31%inclusion37 decks120 decks
6%synergy
Mortuary Mire
30%inclusion36 decks120 decks
17%synergy
Access Tunnel
28%inclusion34 decks120 decks
25%synergy
Cabal Stronghold
26%inclusion31 decks120 decks
-8%synergy
Nykthos, Shrine to Nyx
22%inclusion26 decks120 decks
-8%synergy
Urborg, Tomb of Yawgmoth
22%inclusion26 decks120 decks
-16%synergy
Three Tree City
19%inclusion23 decks120 decks
14%synergy
Barren Moor
18%inclusion22 decks120 decks
9%synergy
Secret Tunnel
14%inclusion11 decks76 decks
13%synergy
Phyrexian Tower
14%inclusion17 decks120 decks
-12%synergy
Reliquary Tower
14%inclusion17 decks120 decks
-15%synergy
Crypt of Agadeem
13%inclusion15 decks120 decks
1%synergy
Castle Locthwain
12%inclusion14 decks120 decks
-5%synergy
Shizo, Death's Storehouse
9.2%inclusion11 decks120 decks
-1%synergy
Inkmoth Nexus
9.2%inclusion11 decks120 decks
8%synergy
War Room
9.2%inclusion11 decks120 decks
-7%synergy
Minas Morgul, Dark Fortress
7.5%inclusion9 decks120 decks
4%synergy
Takenuma, Abandoned Mire
7.5%inclusion9 decks120 decks
-8%synergy
The Dross Pits
5.8%inclusion7 decks120 decks
5%synergy
Polluted Mire
5.8%inclusion7 decks120 decks
2%synergy
Vesuva
5.0%inclusion6 decks120 decks
2%synergy
Mutavault
5.0%inclusion6 decks120 decks
4%synergy
Temple of the False God
5.0%inclusion6 decks120 decks
-2%synergy
Mana Artifacts
Sol Ring
68%inclusion82 decks120 decks
-17%synergy
Arcane Signet
47%inclusion56 decks120 decks
-15%synergy
Glistening Sphere
43%inclusion51 decks120 decks
41%synergy
Staff of Compleation
26%inclusion31 decks120 decks
24%synergy
Patchwork Banner
24%inclusion29 decks120 decks
20%synergy
Charcoal Diamond
23%inclusion27 decks120 decks
1%synergy
Mind Stone
19%inclusion23 decks120 decks
-8%synergy
Heraldic Banner
13%inclusion16 decks120 decks
8%synergy
Phyrexian Atlas
12%inclusion14 decks120 decks
11%synergy
Caged Sun
10%inclusion12 decks120 decks
-0%synergy
Commander's Sphere
8.3%inclusion10 decks120 decks
1%synergy
Thought Vessel
5.8%inclusion7 decks120 decks
-18%synergy
Lands
Swamp
98%inclusion118 decks120 decks
3%synergy
Path of Ancestry
40%inclusion48 decks120 decks
35%synergy
Myriad Landscape
20%inclusion24 decks120 decks
-4%synergy
Big Apple, 3 a.m.
14%inclusion8 decks56 decks
13%synergy
Fell the Profane
14%inclusion17 decks120 decks
-6%synergy
Malakir Rebirth
13%inclusion15 decks120 decks
-11%synergy
Escape Tunnel
11%inclusion13 decks120 decks
10%synergy
Cavern of Souls
11%inclusion13 decks120 decks
4%synergy
Command Tower
7.5%inclusion9 decks120 decks
2%synergy
Terramorphic Expanse
5.0%inclusion6 decks120 decks
2%synergy
Agadeem's Awakening
5.0%inclusion6 decks120 decks
-3%synergy
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