Karumonix, the Rat King (Commander) - Expensive Core

Karumonix, the Rat King
Rank #385
93decks
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Background image for Building Rat Typal With Marrow-Gnawer
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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Rat King, Verminister
40%inclusion10 decks25 decks
37%synergy
Rat King, Pale Piper
33%inclusion7 decks21 decks
29%synergy
Big Apple, 3 a.m.
14%inclusion3 decks21 decks
12%synergy
Shredder's Technique
4.8%inclusion1 decks21 decks
1%synergy
Splinter, Hamato Yoshi
4.8%inclusion1 decks21 decks
4%synergy
High Synergy Cards
Marrow-Gnawer
90%inclusion84 decks93 decks
87%synergy
Piper of the Swarm
85%inclusion79 decks93 decks
78%synergy
Swarmyard
81%inclusion75 decks93 decks
75%synergy
Ashcoat of the Shadow Swarm
70%inclusion65 decks93 decks
67%synergy
Pack Rat
72%inclusion67 decks93 decks
66%synergy
Ogre Slumlord
71%inclusion66 decks93 decks
61%synergy
Lord Skitter, Sewer King
69%inclusion64 decks93 decks
61%synergy
Rat Colony
63%inclusion59 decks93 decks
58%synergy
Blightbelly Rat
61%inclusion57 decks93 decks
58%synergy
Herald's Horn
59%inclusion55 decks93 decks
53%synergy
Top Cards
Jet Medallion
87%inclusion81 decks93 decks
25%synergy
Bontu's Monument
67%inclusion62 decks93 decks
38%synergy
Ichor Rats
56%inclusion52 decks93 decks
53%synergy
Dark Ritual
55%inclusion51 decks93 decks
-12%synergy
Skullclamp
53%inclusion49 decks93 decks
31%synergy
Cover of Darkness
53%inclusion49 decks93 decks
50%synergy
Vraska's Fall
52%inclusion48 decks93 decks
48%synergy
Phyresis Outbreak
52%inclusion48 decks93 decks
50%synergy
Phyrexian Arena
51%inclusion47 decks93 decks
11%synergy
Infectious Inquiry
49%inclusion46 decks93 decks
47%synergy
Creatures
Lord Skitter's Butcher
48%inclusion45 decks93 decks
45%synergy
Tangled Colony
45%inclusion42 decks93 decks
42%synergy
Ratcatcher
44%inclusion41 decks93 decks
41%synergy
Crypt Rats
41%inclusion38 decks93 decks
36%synergy
Species Specialist
41%inclusion38 decks93 decks
37%synergy
Septic Rats
38%inclusion35 decks93 decks
36%synergy
Persistent Marshstalker
35%inclusion29 decks84 decks
32%synergy
Crypt Ghast
33%inclusion31 decks93 decks
-14%synergy
Ink-Eyes, Servant of Oni
33%inclusion31 decks93 decks
30%synergy
Typhoid Rats
33%inclusion31 decks93 decks
30%synergy
Ayara, First of Locthwain
32%inclusion30 decks93 decks
7%synergy
Voracious Vermin
31%inclusion29 decks93 decks
28%synergy
Rancid Rats
27%inclusion25 decks93 decks
24%synergy
Gnat Miser
27%inclusion25 decks93 decks
24%synergy
Nashi, Moon Sage's Scion
27%inclusion25 decks93 decks
23%synergy
Burglar Rat
26%inclusion24 decks93 decks
15%synergy
Yawgmoth, Thran Physician
24%inclusion22 decks93 decks
14%synergy
Changeling Outcast
24%inclusion22 decks93 decks
19%synergy
Relentless Rats
22%inclusion20 decks93 decks
20%synergy
Wave of Rats
22%inclusion20 decks93 decks
20%synergy
Stronghold Rats
22%inclusion20 decks93 decks
18%synergy
Filth
20%inclusion19 decks93 decks
18%synergy
Swarm of Rats
18%inclusion17 decks93 decks
16%synergy
Engine Rat
18%inclusion11 decks61 decks
16%synergy
Valley Rotcaller
18%inclusion15 decks84 decks
15%synergy
Throat Slitter
16%inclusion15 decks93 decks
14%synergy
Roaming Throne
15%inclusion14 decks93 decks
12%synergy
Gray Merchant of Asphodel
14%inclusion13 decks93 decks
-37%synergy
Nezumi Informant
14%inclusion13 decks93 decks
7%synergy
Chittering Skitterling
14%inclusion13 decks93 decks
13%synergy
Zodiac Rat
13%inclusion12 decks93 decks
13%synergy
Gnawing Vermin
13%inclusion12 decks93 decks
11%synergy
Undercity Dire Rat
12%inclusion6 decks50 decks
10%synergy
Nezumi Prowler
12%inclusion11 decks93 decks
10%synergy
Locust Miser
12%inclusion11 decks93 decks
10%synergy
Drainpipe Vermin
11%inclusion10 decks93 decks
9%synergy
Nezumi Graverobber
11%inclusion10 decks93 decks
9%synergy
Twisted Sewer-Witch
11%inclusion10 decks93 decks
9%synergy
Rotting Rats
10%inclusion9 decks93 decks
6%synergy
Chittering Witch
10%inclusion9 decks93 decks
5%synergy
Pestilence Rats
10%inclusion9 decks93 decks
8%synergy
Nezumi Cutthroat
10%inclusion9 decks93 decks
9%synergy
Old Flitterfang
7.5%inclusion7 decks93 decks
6%synergy
Ruthless Radrat
7.5%inclusion7 decks93 decks
7%synergy
Refurbished Familiar
6.7%inclusion6 decks89 decks
5%synergy
Zulaport Cutthroat
6.5%inclusion6 decks93 decks
-17%synergy
Mirkwood Bats
6.5%inclusion6 decks93 decks
-2%synergy
Defiler of Flesh
6.5%inclusion6 decks93 decks
2%synergy
Patron of the Nezumi
5.4%inclusion5 decks93 decks
5%synergy
Skullsnatcher
5.4%inclusion5 decks93 decks
5%synergy
Instants
Deadly Rollick
32%inclusion30 decks93 decks
8%synergy
Defile
31%inclusion29 decks93 decks
-5%synergy
Village Rites
29%inclusion27 decks93 decks
4%synergy
Whisper of the Dross
28%inclusion26 decks93 decks
25%synergy
Malakir Rebirth
26%inclusion24 decks93 decks
3%synergy
Fell the Profane
23%inclusion21 decks91 decks
4%synergy
Grim Affliction
20%inclusion19 decks93 decks
18%synergy
Tainted Strike
20%inclusion19 decks93 decks
17%synergy
Go for the Throat
19%inclusion18 decks93 decks
-4%synergy
Withering Torment
18%inclusion13 decks72 decks
-13%synergy
Infernal Grasp
17%inclusion16 decks93 decks
-8%synergy
Consuming Corruption
16%inclusion14 decks89 decks
0%synergy
Deadly Dispute
15%inclusion14 decks93 decks
-11%synergy
Tragic Slip
15%inclusion14 decks93 decks
-5%synergy
Foul-Tongue Shriek
15%inclusion14 decks93 decks
13%synergy
Anoint with Affliction
13%inclusion12 decks93 decks
12%synergy
Sudden Spoiling
13%inclusion12 decks93 decks
4%synergy
Rat Out
12%inclusion11 decks93 decks
10%synergy
Bitter Triumph
11%inclusion10 decks93 decks
1%synergy
Corrupted Conviction
11%inclusion10 decks93 decks
-2%synergy
Snuff Out
8.6%inclusion8 decks93 decks
-4%synergy
Imp's Mischief
7.5%inclusion7 decks93 decks
-17%synergy
Darkness
7.5%inclusion7 decks93 decks
-2%synergy
Gravepurge
7.5%inclusion7 decks93 decks
6%synergy
Feign Death
7.5%inclusion7 decks93 decks
-1%synergy
Baleful Mastery
6.5%inclusion6 decks93 decks
-2%synergy
Hero's Downfall
6.5%inclusion6 decks93 decks
0%synergy
Sheoldred's Edict
6.5%inclusion6 decks93 decks
-8%synergy
Not Dead After All
5.4%inclusion5 decks93 decks
-6%synergy
Sorceries
Feed the Swarm
44%inclusion41 decks93 decks
-6%synergy
Drown in Ichor
41%inclusion38 decks93 decks
37%synergy
Patriarch's Bidding
41%inclusion38 decks93 decks
37%synergy
Kindred Dominance
39%inclusion36 decks93 decks
34%synergy
Swarmyard Massacre
37%inclusion30 decks81 decks
35%synergy
Sign in Blood
31%inclusion29 decks93 decks
-4%synergy
Bloodline Bidding
31%inclusion8 decks26 decks
26%synergy
Toxic Deluge
29%inclusion27 decks93 decks
-8%synergy
Echoing Return
25%inclusion23 decks93 decks
22%synergy
Crippling Fear
23%inclusion21 decks93 decks
19%synergy
Plague of Vermin
22%inclusion20 decks93 decks
19%synergy
Night's Whisper
19%inclusion18 decks93 decks
-5%synergy
Damnation
18%inclusion17 decks93 decks
-2%synergy
Revenge of the Rats
18%inclusion12 decks68 decks
15%synergy
Pact of the Serpent
16%inclusion15 decks93 decks
14%synergy
Reanimate
14%inclusion13 decks93 decks
-26%synergy
Diabolic Intent
13%inclusion12 decks93 decks
-2%synergy
Vat Emergence
13%inclusion12 decks93 decks
11%synergy
Unearth
12%inclusion11 decks93 decks
3%synergy
Agadeem's Awakening
12%inclusion11 decks93 decks
5%synergy
Haunting Voyage
11%inclusion10 decks93 decks
10%synergy
Exsanguinate
10%inclusion9 decks93 decks
-15%synergy
Insatiable Avarice
10%inclusion9 decks93 decks
-2%synergy
Read the Bones
8.6%inclusion8 decks93 decks
-8%synergy
Forever Young
7.5%inclusion7 decks93 decks
6%synergy
Living Death
7.5%inclusion7 decks93 decks
-3%synergy
Diabolic Tutor
6.5%inclusion6 decks93 decks
-8%synergy
Mutilate
6.5%inclusion6 decks93 decks
-11%synergy
Geth's Summons
6.5%inclusion6 decks93 decks
6%synergy
Blasphemous Edict
5.9%inclusion4 decks68 decks
-11%synergy
Torment of Hailfire
5.4%inclusion5 decks93 decks
-10%synergy
Feed the Infection
5.4%inclusion5 decks93 decks
5%synergy
Syphon Mind
5.4%inclusion5 decks93 decks
-7%synergy
Utility Artifacts
Thrumming Stone
47%inclusion44 decks93 decks
43%synergy
Vanquisher's Banner
41%inclusion38 decks93 decks
37%synergy
Chronicle of Victory
27%inclusion7 decks26 decks
24%synergy
Contagion Engine
27%inclusion25 decks93 decks
25%synergy
Whip of Erebos
25%inclusion23 decks93 decks
14%synergy
Lightning Greaves
23%inclusion21 decks93 decks
-11%synergy
Door of Destinies
22%inclusion20 decks93 decks
19%synergy
Contagion Clasp
19%inclusion18 decks93 decks
17%synergy
Coat of Arms
19%inclusion18 decks93 decks
17%synergy
Eldrazi Monument
17%inclusion16 decks93 decks
15%synergy
Banner of Kinship
15%inclusion10 decks68 decks
13%synergy
Swiftfoot Boots
13%inclusion12 decks93 decks
-19%synergy
Akroma's Memorial
11%inclusion10 decks93 decks
10%synergy
Ashnod's Altar
11%inclusion10 decks93 decks
-9%synergy
Sword of Truth and Justice
10%inclusion9 decks93 decks
9%synergy
Wayfarer's Bauble
8.6%inclusion8 decks93 decks
-7%synergy
Expedition Map
6.5%inclusion6 decks93 decks
-5%synergy
Grafted Exoskeleton
6.5%inclusion6 decks93 decks
5%synergy
The Darkness Crystal
6.0%inclusion3 decks50 decks
-14%synergy
Thornbite Staff
5.4%inclusion5 decks93 decks
3%synergy
Sword of Hearth and Home
5.4%inclusion5 decks93 decks
4%synergy
Urza's Incubator
5.4%inclusion5 decks93 decks
3%synergy
Enchantments
Black Market Connections
39%inclusion36 decks93 decks
15%synergy
Haunted One
30%inclusion28 decks93 decks
27%synergy
Grave Pact
25%inclusion23 decks93 decks
5%synergy
Necrogen Communion
20%inclusion19 decks93 decks
19%synergy
Black Market
16%inclusion15 decks93 decks
-5%synergy
Bad Moon
16%inclusion15 decks93 decks
13%synergy
Phyresis
15%inclusion14 decks93 decks
13%synergy
Oversold Cemetery
15%inclusion14 decks93 decks
10%synergy
The Meathook Massacre
14%inclusion13 decks93 decks
-3%synergy
Vampiric Rites
12%inclusion11 decks93 decks
6%synergy
Dictate of Erebos
11%inclusion10 decks93 decks
0%synergy
Dark Prophecy
10%inclusion9 decks93 decks
6%synergy
Phyrexian Reclamation
8.6%inclusion8 decks93 decks
-1%synergy
Glistening Oil
7.5%inclusion7 decks93 decks
7%synergy
Tribute to Horobi
6.5%inclusion6 decks93 decks
5%synergy
Planeswalkers
Vraska, Betrayal's Sting
30%inclusion28 decks93 decks
27%synergy
Liliana of the Dark Realms
16%inclusion15 decks93 decks
2%synergy
Utility Lands
Cabal Coffers
84%inclusion78 decks93 decks
29%synergy
Urborg, Tomb of Yawgmoth
72%inclusion67 decks93 decks
34%synergy
Nykthos, Shrine to Nyx
61%inclusion57 decks93 decks
32%synergy
Cabal Stronghold
56%inclusion52 decks93 decks
21%synergy
Three Tree City
49%inclusion41 decks84 decks
44%synergy
Karn's Bastion
43%inclusion40 decks93 decks
39%synergy
Bojuka Bog
42%inclusion39 decks93 decks
-5%synergy
Mudflat Village
38%inclusion32 decks84 decks
35%synergy
Phyrexian Tower
34%inclusion32 decks93 decks
9%synergy
Rogue's Passage
33%inclusion31 decks93 decks
14%synergy
Reliquary Tower
30%inclusion28 decks93 decks
0%synergy
Shizo, Death's Storehouse
26%inclusion24 decks93 decks
16%synergy
Crypt of Agadeem
25%inclusion23 decks93 decks
14%synergy
Takenuma, Abandoned Mire
23%inclusion21 decks93 decks
7%synergy
Castle Locthwain
22%inclusion20 decks93 decks
4%synergy
Secret Tunnel
19%inclusion7 decks37 decks
18%synergy
Witch's Cottage
16%inclusion15 decks93 decks
-8%synergy
Minas Morgul, Dark Fortress
16%inclusion15 decks93 decks
13%synergy
War Room
16%inclusion15 decks93 decks
0%synergy
Mortuary Mire
15%inclusion14 decks93 decks
2%synergy
Mutavault
13%inclusion12 decks93 decks
12%synergy
Midgar, City of Mako
12%inclusion6 decks50 decks
1%synergy
Susur Secundi, Void Altar
9.3%inclusion4 decks43 decks
2%synergy
Inkmoth Nexus
8.6%inclusion8 decks93 decks
8%synergy
Temple of the False God
8.6%inclusion8 decks93 decks
1%synergy
Volrath's Stronghold
8.6%inclusion8 decks93 decks
5%synergy
Vesuva
7.5%inclusion7 decks93 decks
5%synergy
Access Tunnel
7.5%inclusion7 decks93 decks
4%synergy
The Black Gate
6.5%inclusion6 decks93 decks
3%synergy
High Market
5.4%inclusion5 decks93 decks
-2%synergy
Deserted Temple
5.4%inclusion5 decks93 decks
1%synergy
Mana Artifacts
Sol Ring
73%inclusion68 decks93 decks
-13%synergy
Glistening Sphere
45%inclusion42 decks93 decks
44%synergy
Arcane Signet
44%inclusion41 decks93 decks
-18%synergy
Patchwork Banner
33%inclusion28 decks84 decks
29%synergy
The Soul Stone
22%inclusion9 decks41 decks
8%synergy
Staff of Compleation
19%inclusion18 decks93 decks
18%synergy
Charcoal Diamond
12%inclusion11 decks93 decks
-11%synergy
Heraldic Banner
10%inclusion9 decks93 decks
4%synergy
Throne of Eldraine
8.6%inclusion8 decks93 decks
-1%synergy
Thought Vessel
8.6%inclusion8 decks93 decks
-17%synergy
Caged Sun
7.5%inclusion7 decks93 decks
-4%synergy
Gauntlet of Power
7.5%inclusion7 decks93 decks
4%synergy
Mind Stone
7.5%inclusion7 decks93 decks
-22%synergy
Lands
Swamp
96%inclusion89 decks93 decks
1%synergy
Cavern of Souls
48%inclusion45 decks93 decks
42%synergy
Path of Ancestry
32%inclusion30 decks93 decks
27%synergy
Malakir Rebirth
26%inclusion24 decks93 decks
3%synergy
Fell the Profane
23%inclusion21 decks91 decks
4%synergy
Myriad Landscape
20%inclusion19 decks93 decks
-5%synergy
Urza's Cave
12%inclusion11 decks92 decks
4%synergy
Agadeem's Awakening
12%inclusion11 decks93 decks
5%synergy
Command Tower
10%inclusion9 decks93 decks
4%synergy
Polluted Delta
8.6%inclusion8 decks93 decks
5%synergy
Verdant Catacombs
8.6%inclusion8 decks93 decks
5%synergy
Bloodstained Mire
7.5%inclusion7 decks93 decks
4%synergy
Marsh Flats
6.5%inclusion6 decks93 decks
3%synergy
Snow-Covered Swamp
6.5%inclusion6 decks93 decks
0%synergy
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