Karumonix, the Rat King (Commander) - Expensive Core

Karumonix, the Rat King
Rank #398
87decks
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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Utility Lands
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Marrow-Gnawer
95%inclusion83 decks87 decks
92%synergy
Piper of the Swarm
89%inclusion77 decks87 decks
82%synergy
Swarmyard
80%inclusion70 decks87 decks
75%synergy
Ashcoat of the Shadow Swarm
77%inclusion67 decks87 decks
73%synergy
Ogre Slumlord
79%inclusion69 decks87 decks
69%synergy
Pack Rat
75%inclusion65 decks87 decks
69%synergy
Lord Skitter, Sewer King
75%inclusion65 decks87 decks
67%synergy
Rat Colony
66%inclusion57 decks87 decks
60%synergy
Blightbelly Rat
63%inclusion55 decks87 decks
60%synergy
Ichor Rats
62%inclusion54 decks87 decks
59%synergy
Top Cards
Jet Medallion
85%inclusion74 decks87 decks
23%synergy
Bontu's Monument
63%inclusion55 decks87 decks
35%synergy
Dark Ritual
61%inclusion53 decks87 decks
-6%synergy
Infectious Inquiry
57%inclusion50 decks87 decks
55%synergy
Phyresis Outbreak
56%inclusion49 decks87 decks
55%synergy
Skullclamp
56%inclusion49 decks87 decks
34%synergy
Cover of Darkness
56%inclusion49 decks87 decks
53%synergy
Vraska's Fall
52%inclusion45 decks87 decks
48%synergy
Lord Skitter's Butcher
51%inclusion44 decks87 decks
47%synergy
Herald's Horn
49%inclusion43 decks87 decks
44%synergy
Game Changers
Demonic Tutor
5.7%inclusion5 decks87 decks
-21%synergy
Creatures
Septic Rats
47%inclusion41 decks87 decks
45%synergy
Ratcatcher
47%inclusion41 decks87 decks
44%synergy
Tangled Colony
46%inclusion40 decks87 decks
43%synergy
Rat King, Verminister
45%inclusion15 decks33 decks
42%synergy
Crypt Rats
45%inclusion39 decks87 decks
40%synergy
Rat King, Pale Piper
43%inclusion13 decks30 decks
39%synergy
Species Specialist
41%inclusion36 decks87 decks
38%synergy
Typhoid Rats
41%inclusion36 decks87 decks
38%synergy
Ink-Eyes, Servant of Oni
39%inclusion34 decks87 decks
36%synergy
Persistent Marshstalker
38%inclusion33 decks87 decks
35%synergy
Rancid Rats
36%inclusion31 decks87 decks
33%synergy
Voracious Vermin
36%inclusion31 decks87 decks
33%synergy
Ayara, First of Locthwain
33%inclusion29 decks87 decks
8%synergy
Crypt Ghast
33%inclusion29 decks87 decks
-14%synergy
Nashi, Moon Sage's Scion
32%inclusion28 decks87 decks
28%synergy
Gnat Miser
31%inclusion27 decks87 decks
28%synergy
Burglar Rat
30%inclusion26 decks87 decks
19%synergy
Changeling Outcast
28%inclusion24 decks87 decks
23%synergy
Stronghold Rats
28%inclusion24 decks87 decks
24%synergy
Wave of Rats
24%inclusion21 decks87 decks
22%synergy
Yawgmoth, Thran Physician
24%inclusion21 decks87 decks
14%synergy
Swarm of Rats
22%inclusion19 decks87 decks
19%synergy
Throat Slitter
22%inclusion19 decks87 decks
20%synergy
Valley Rotcaller
21%inclusion18 decks87 decks
18%synergy
Engine Rat
20%inclusion13 decks65 decks
18%synergy
Chittering Skitterling
20%inclusion17 decks87 decks
19%synergy
Filth
17%inclusion15 decks87 decks
15%synergy
Zodiac Rat
16%inclusion14 decks87 decks
16%synergy
Nezumi Graverobber
15%inclusion13 decks87 decks
14%synergy
Roaming Throne
15%inclusion13 decks87 decks
12%synergy
Nezumi Informant
15%inclusion13 decks87 decks
9%synergy
Nezumi Prowler
15%inclusion13 decks87 decks
14%synergy
Pestilence Rats
15%inclusion13 decks87 decks
13%synergy
Twisted Sewer-Witch
15%inclusion13 decks87 decks
14%synergy
Relentless Rats
14%inclusion12 decks87 decks
12%synergy
Undercity Dire Rat
13%inclusion7 decks54 decks
11%synergy
Rotting Rats
13%inclusion11 decks87 decks
10%synergy
Locust Miser
13%inclusion11 decks87 decks
11%synergy
Gnawing Vermin
11%inclusion10 decks87 decks
10%synergy
Gray Merchant of Asphodel
11%inclusion10 decks87 decks
-39%synergy
Chittering Witch
11%inclusion10 decks87 decks
7%synergy
Drainpipe Vermin
11%inclusion10 decks87 decks
10%synergy
Emeritus of Woe
11%inclusion2 decks18 decks
4%synergy
Nezumi Cutthroat
10%inclusion9 decks87 decks
10%synergy
Razortooth Rats
10%inclusion9 decks87 decks
10%synergy
Old Flitterfang
10%inclusion9 decks87 decks
9%synergy
Ruthless Radrat
9.2%inclusion8 decks87 decks
8%synergy
Adaptive Automaton
9.2%inclusion8 decks87 decks
8%synergy
Ruin Rat
9.2%inclusion8 decks87 decks
8%synergy
Skullsnatcher
8.0%inclusion7 decks87 decks
7%synergy
Instants
Deadly Rollick
34%inclusion30 decks87 decks
10%synergy
Defile
33%inclusion29 decks87 decks
-2%synergy
Village Rites
32%inclusion28 decks87 decks
7%synergy
Malakir Rebirth
32%inclusion28 decks87 decks
9%synergy
Whisper of the Dross
30%inclusion26 decks87 decks
27%synergy
Tainted Strike
28%inclusion24 decks87 decks
25%synergy
Fell the Profane
25%inclusion22 decks87 decks
6%synergy
Withering Torment
21%inclusion16 decks76 decks
-10%synergy
Deadly Dispute
21%inclusion18 decks87 decks
-6%synergy
Go for the Throat
20%inclusion17 decks87 decks
-3%synergy
Anoint with Affliction
18%inclusion16 decks87 decks
18%synergy
Grim Affliction
17%inclusion15 decks87 decks
15%synergy
Consuming Corruption
16%inclusion14 decks87 decks
0%synergy
Infernal Grasp
15%inclusion13 decks87 decks
-10%synergy
Tragic Slip
15%inclusion13 decks87 decks
-4%synergy
Corrupted Conviction
13%inclusion11 decks87 decks
0%synergy
Sudden Spoiling
13%inclusion11 decks87 decks
4%synergy
Rat Out
11%inclusion10 decks87 decks
10%synergy
Foul-Tongue Shriek
11%inclusion10 decks87 decks
10%synergy
Virulent Wound
10%inclusion9 decks87 decks
10%synergy
Bitter Triumph
10%inclusion9 decks87 decks
0%synergy
Feign Death
10%inclusion9 decks87 decks
2%synergy
Snuff Out
9.2%inclusion8 decks87 decks
-4%synergy
Darkness
9.2%inclusion8 decks87 decks
-1%synergy
Hagra Mauling
8.0%inclusion7 decks87 decks
4%synergy
Hero's Downfall
8.0%inclusion7 decks87 decks
1%synergy
Imp's Mischief
8.0%inclusion7 decks87 decks
-17%synergy
Gravepurge
8.0%inclusion7 decks87 decks
7%synergy
Not Dead After All
5.7%inclusion5 decks87 decks
-6%synergy
Cabal Ritual
5.7%inclusion5 decks87 decks
-13%synergy
Offer Immortality
5.7%inclusion5 decks87 decks
4%synergy
Sorceries
Feed the Swarm
47%inclusion41 decks87 decks
-3%synergy
Drown in Ichor
41%inclusion36 decks87 decks
38%synergy
Kindred Dominance
39%inclusion34 decks87 decks
34%synergy
Patriarch's Bidding
38%inclusion33 decks87 decks
34%synergy
Swarmyard Massacre
37%inclusion31 decks84 decks
35%synergy
Sign in Blood
32%inclusion28 decks87 decks
-3%synergy
Toxic Deluge
28%inclusion24 decks87 decks
-9%synergy
Bloodline Bidding
24%inclusion8 decks34 decks
19%synergy
Plague of Vermin
23%inclusion20 decks87 decks
21%synergy
Crippling Fear
22%inclusion19 decks87 decks
19%synergy
Night's Whisper
21%inclusion18 decks87 decks
-4%synergy
Echoing Return
20%inclusion17 decks87 decks
16%synergy
Revenge of the Rats
19%inclusion14 decks74 decks
16%synergy
Pact of the Serpent
18%inclusion16 decks87 decks
17%synergy
Damnation
17%inclusion15 decks87 decks
-3%synergy
Diabolic Intent
16%inclusion14 decks87 decks
1%synergy
Reanimate
16%inclusion14 decks87 decks
-24%synergy
Agadeem's Awakening
14%inclusion12 decks87 decks
6%synergy
Vat Emergence
10%inclusion9 decks87 decks
9%synergy
Unearth
10%inclusion9 decks87 decks
2%synergy
Read the Bones
10%inclusion9 decks87 decks
-6%synergy
Exsanguinate
10%inclusion9 decks87 decks
-14%synergy
Haunting Voyage
9.2%inclusion8 decks87 decks
8%synergy
Bubbling Muck
9.2%inclusion8 decks87 decks
-6%synergy
Feed the Infection
8.0%inclusion7 decks87 decks
7%synergy
Forever Young
8.0%inclusion7 decks87 decks
7%synergy
Insatiable Avarice
8.0%inclusion7 decks87 decks
-3%synergy
Geth's Summons
8.0%inclusion7 decks87 decks
8%synergy
Spread the Sickness
6.9%inclusion6 decks87 decks
6%synergy
Diabolic Tutor
6.9%inclusion6 decks87 decks
-7%synergy
Torment of Hailfire
6.9%inclusion6 decks87 decks
-8%synergy
Victimize
5.7%inclusion5 decks87 decks
-22%synergy
Living Death
5.7%inclusion5 decks87 decks
-5%synergy
Grim Tutor
5.7%inclusion5 decks87 decks
-6%synergy
In Garruk's Wake
5.7%inclusion5 decks87 decks
2%synergy
Syphon Mind
5.7%inclusion5 decks87 decks
-6%synergy
Pox Plague
5.6%inclusion1 decks18 decks
0%synergy
Utility Artifacts
Vanquisher's Banner
44%inclusion38 decks87 decks
40%synergy
Thrumming Stone
41%inclusion36 decks87 decks
37%synergy
Contagion Engine
31%inclusion27 decks87 decks
29%synergy
Whip of Erebos
31%inclusion27 decks87 decks
20%synergy
Chronicle of Victory
29%inclusion10 decks34 decks
27%synergy
Contagion Clasp
25%inclusion22 decks87 decks
23%synergy
Lightning Greaves
24%inclusion21 decks87 decks
-10%synergy
Coat of Arms
23%inclusion20 decks87 decks
20%synergy
Door of Destinies
21%inclusion18 decks87 decks
19%synergy
Eldrazi Monument
17%inclusion15 decks87 decks
16%synergy
Swiftfoot Boots
15%inclusion13 decks87 decks
-17%synergy
Ashnod's Altar
14%inclusion12 decks87 decks
-6%synergy
Wayfarer's Bauble
11%inclusion10 decks87 decks
-3%synergy
Sword of Truth and Justice
11%inclusion10 decks87 decks
11%synergy
Grafted Exoskeleton
11%inclusion10 decks87 decks
10%synergy
Banner of Kinship
9.5%inclusion7 decks74 decks
7%synergy
The Darkness Crystal
9.3%inclusion5 decks54 decks
-11%synergy
Urza's Incubator
8.0%inclusion7 decks87 decks
6%synergy
Akroma's Memorial
8.0%inclusion7 decks87 decks
7%synergy
Expedition Map
6.9%inclusion6 decks87 decks
-5%synergy
Gathering Stone
5.9%inclusion2 decks34 decks
5%synergy
Phyrexian Altar
5.7%inclusion5 decks87 decks
-8%synergy
Sword of Hearth and Home
5.7%inclusion5 decks87 decks
4%synergy
Obelisk of Urd
5.7%inclusion5 decks87 decks
5%synergy
Enchantments
Black Market Connections
41%inclusion36 decks87 decks
17%synergy
Phyrexian Arena
41%inclusion36 decks87 decks
2%synergy
Haunted One
29%inclusion25 decks87 decks
26%synergy
Grave Pact
26%inclusion23 decks87 decks
7%synergy
Necrogen Communion
26%inclusion23 decks87 decks
25%synergy
Phyresis
20%inclusion17 decks87 decks
17%synergy
Black Market
18%inclusion16 decks87 decks
-2%synergy
Bad Moon
17%inclusion15 decks87 decks
14%synergy
The Meathook Massacre
16%inclusion14 decks87 decks
-1%synergy
Oversold Cemetery
16%inclusion14 decks87 decks
11%synergy
Dictate of Erebos
15%inclusion13 decks87 decks
4%synergy
Dark Prophecy
10%inclusion9 decks87 decks
7%synergy
Glistening Oil
9.2%inclusion8 decks87 decks
9%synergy
Tribute to Horobi
9.2%inclusion8 decks87 decks
8%synergy
Phyrexian Reclamation
8.0%inclusion7 decks87 decks
-2%synergy
Vampiric Rites
6.9%inclusion6 decks87 decks
1%synergy
Planeswalkers
Vraska, Betrayal's Sting
36%inclusion31 decks87 decks
33%synergy
Liliana of the Dark Realms
15%inclusion13 decks87 decks
1%synergy
Utility Lands
Cabal Coffers
89%inclusion77 decks87 decks
34%synergy
Urborg, Tomb of Yawgmoth
77%inclusion67 decks87 decks
39%synergy
Nykthos, Shrine to Nyx
69%inclusion60 decks87 decks
39%synergy
Cabal Stronghold
54%inclusion47 decks87 decks
20%synergy
Karn's Bastion
52%inclusion45 decks87 decks
48%synergy
Three Tree City
49%inclusion43 decks87 decks
45%synergy
Bojuka Bog
41%inclusion36 decks87 decks
-6%synergy
Mudflat Village
41%inclusion36 decks87 decks
39%synergy
Phyrexian Tower
40%inclusion35 decks87 decks
14%synergy
Rogue's Passage
33%inclusion29 decks87 decks
14%synergy
Shizo, Death's Storehouse
31%inclusion27 decks87 decks
21%synergy
Reliquary Tower
31%inclusion27 decks87 decks
1%synergy
Crypt of Agadeem
30%inclusion26 decks87 decks
18%synergy
Takenuma, Abandoned Mire
30%inclusion26 decks87 decks
14%synergy
Witch's Cottage
24%inclusion21 decks87 decks
-0%synergy
Castle Locthwain
24%inclusion21 decks87 decks
7%synergy
Mortuary Mire
21%inclusion18 decks87 decks
8%synergy
War Room
17%inclusion15 decks87 decks
1%synergy
Minas Morgul, Dark Fortress
16%inclusion14 decks87 decks
13%synergy
Secret Tunnel
14%inclusion6 decks42 decks
13%synergy
Mutavault
13%inclusion11 decks87 decks
12%synergy
Susur Secundi, Void Altar
11%inclusion5 decks47 decks
3%synergy
Inkmoth Nexus
10%inclusion9 decks87 decks
9%synergy
Access Tunnel
9.2%inclusion8 decks87 decks
6%synergy
Vesuva
8.0%inclusion7 decks87 decks
5%synergy
Volrath's Stronghold
8.0%inclusion7 decks87 decks
4%synergy
Midgar, City of Mako
7.5%inclusion4 decks53 decks
-3%synergy
Barren Moor
6.9%inclusion6 decks87 decks
-3%synergy
The Black Gate
5.7%inclusion5 decks87 decks
2%synergy
High Market
5.7%inclusion5 decks87 decks
-2%synergy
Leechridden Swamp
5.7%inclusion5 decks87 decks
3%synergy
Temple of the False God
5.7%inclusion5 decks87 decks
-2%synergy
Mana Artifacts
Sol Ring
77%inclusion67 decks87 decks
-9%synergy
Arcane Signet
48%inclusion42 decks87 decks
-13%synergy
Glistening Sphere
47%inclusion41 decks87 decks
46%synergy
Patchwork Banner
31%inclusion27 decks87 decks
27%synergy
Staff of Compleation
25%inclusion22 decks87 decks
24%synergy
The Soul Stone
24%inclusion11 decks45 decks
9%synergy
Charcoal Diamond
11%inclusion10 decks87 decks
-10%synergy
Heraldic Banner
11%inclusion10 decks87 decks
6%synergy
Caged Sun
10%inclusion9 decks87 decks
-0%synergy
Gauntlet of Power
10%inclusion9 decks87 decks
7%synergy
Mind Stone
10%inclusion9 decks87 decks
-18%synergy
Thought Vessel
9.2%inclusion8 decks87 decks
-16%synergy
Throne of Eldraine
8.0%inclusion7 decks87 decks
-1%synergy
Phyrexian Atlas
6.9%inclusion6 decks87 decks
7%synergy
Extraplanar Lens
5.7%inclusion5 decks87 decks
1%synergy
Lands
Swamp
95%inclusion83 decks87 decks
0%synergy
Cavern of Souls
49%inclusion43 decks87 decks
43%synergy
Path of Ancestry
38%inclusion33 decks87 decks
33%synergy
Malakir Rebirth
32%inclusion28 decks87 decks
9%synergy
Fell the Profane
25%inclusion22 decks87 decks
6%synergy
Myriad Landscape
20%inclusion17 decks87 decks
-5%synergy
Agadeem's Awakening
14%inclusion12 decks87 decks
6%synergy
Big Apple, 3 a.m.
13%inclusion4 decks30 decks
12%synergy
Urza's Cave
11%inclusion10 decks87 decks
3%synergy
Hagra Mauling
8.0%inclusion7 decks87 decks
4%synergy
Command Tower
8.0%inclusion7 decks87 decks
2%synergy
Verdant Catacombs
8.0%inclusion7 decks87 decks
5%synergy
Polluted Delta
8.0%inclusion7 decks87 decks
4%synergy
Snow-Covered Swamp
6.9%inclusion6 decks87 decks
0%synergy
Bloodstained Mire
6.9%inclusion6 decks87 decks
3%synergy
Marsh Flats
5.7%inclusion5 decks87 decks
2%synergy
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