Karumonix, the Rat King (Commander) - Expensive Core

Karumonix, the Rat King
Rank #393
89decks
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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Emeritus of Woe
15%inclusion2 decks13 decks
7%synergy
High Synergy Cards
Marrow-Gnawer
96%inclusion85 decks89 decks
92%synergy
Piper of the Swarm
93%inclusion83 decks89 decks
86%synergy
Swarmyard
84%inclusion75 decks89 decks
79%synergy
Ogre Slumlord
83%inclusion74 decks89 decks
73%synergy
Pack Rat
79%inclusion70 decks89 decks
73%synergy
Ashcoat of the Shadow Swarm
75%inclusion67 decks89 decks
72%synergy
Lord Skitter, Sewer King
79%inclusion70 decks89 decks
70%synergy
Blightbelly Rat
66%inclusion59 decks89 decks
63%synergy
Ichor Rats
65%inclusion58 decks89 decks
62%synergy
Phyresis Outbreak
61%inclusion54 decks89 decks
59%synergy
Top Cards
Jet Medallion
90%inclusion80 decks89 decks
28%synergy
Bontu's Monument
66%inclusion59 decks89 decks
38%synergy
Dark Ritual
60%inclusion53 decks89 decks
-7%synergy
Rat Colony
58%inclusion52 decks89 decks
53%synergy
Infectious Inquiry
57%inclusion51 decks89 decks
55%synergy
Herald's Horn
57%inclusion51 decks89 decks
52%synergy
Vraska's Fall
56%inclusion50 decks89 decks
53%synergy
Skullclamp
56%inclusion50 decks89 decks
34%synergy
Lord Skitter's Butcher
54%inclusion48 decks89 decks
51%synergy
Cover of Darkness
52%inclusion46 decks89 decks
49%synergy
Game Changers
Demonic Tutor
5.6%inclusion5 decks89 decks
-22%synergy
Creatures
Ratcatcher
51%inclusion45 decks89 decks
47%synergy
Tangled Colony
47%inclusion42 decks89 decks
44%synergy
Septic Rats
47%inclusion42 decks89 decks
45%synergy
Rat King, Pale Piper
46%inclusion12 decks26 decks
42%synergy
Crypt Rats
45%inclusion40 decks89 decks
40%synergy
Rat King, Verminister
45%inclusion13 decks29 decks
42%synergy
Species Specialist
42%inclusion37 decks89 decks
38%synergy
Ink-Eyes, Servant of Oni
42%inclusion37 decks89 decks
38%synergy
Typhoid Rats
40%inclusion36 decks89 decks
37%synergy
Persistent Marshstalker
40%inclusion35 decks87 decks
37%synergy
Voracious Vermin
37%inclusion33 decks89 decks
34%synergy
Rancid Rats
36%inclusion32 decks89 decks
34%synergy
Ayara, First of Locthwain
35%inclusion31 decks89 decks
9%synergy
Crypt Ghast
35%inclusion31 decks89 decks
-13%synergy
Nashi, Moon Sage's Scion
34%inclusion30 decks89 decks
30%synergy
Gnat Miser
33%inclusion29 decks89 decks
30%synergy
Burglar Rat
33%inclusion29 decks89 decks
22%synergy
Changeling Outcast
30%inclusion27 decks89 decks
25%synergy
Stronghold Rats
28%inclusion25 decks89 decks
24%synergy
Wave of Rats
25%inclusion22 decks89 decks
23%synergy
Throat Slitter
24%inclusion21 decks89 decks
22%synergy
Swarm of Rats
24%inclusion21 decks89 decks
21%synergy
Yawgmoth, Thran Physician
24%inclusion21 decks89 decks
14%synergy
Valley Rotcaller
23%inclusion20 decks87 decks
20%synergy
Chittering Skitterling
21%inclusion19 decks89 decks
20%synergy
Relentless Rats
21%inclusion19 decks89 decks
20%synergy
Engine Rat
21%inclusion13 decks63 decks
19%synergy
Roaming Throne
18%inclusion16 decks89 decks
15%synergy
Twisted Sewer-Witch
17%inclusion15 decks89 decks
15%synergy
Filth
17%inclusion15 decks89 decks
14%synergy
Pestilence Rats
16%inclusion14 decks89 decks
14%synergy
Zodiac Rat
16%inclusion14 decks89 decks
16%synergy
Nezumi Graverobber
15%inclusion13 decks89 decks
13%synergy
Locust Miser
15%inclusion13 decks89 decks
13%synergy
Nezumi Informant
15%inclusion13 decks89 decks
8%synergy
Nezumi Prowler
15%inclusion13 decks89 decks
13%synergy
Gnawing Vermin
13%inclusion12 decks89 decks
12%synergy
Adaptive Automaton
13%inclusion12 decks89 decks
12%synergy
Undercity Dire Rat
13%inclusion7 decks52 decks
12%synergy
Gray Merchant of Asphodel
12%inclusion11 decks89 decks
-38%synergy
Old Flitterfang
12%inclusion11 decks89 decks
11%synergy
Rotting Rats
12%inclusion11 decks89 decks
9%synergy
Nezumi Cutthroat
12%inclusion11 decks89 decks
12%synergy
Chittering Witch
12%inclusion11 decks89 decks
8%synergy
Razortooth Rats
11%inclusion10 decks89 decks
11%synergy
Drainpipe Vermin
11%inclusion10 decks89 decks
10%synergy
Ruthless Radrat
9.0%inclusion8 decks89 decks
8%synergy
Ruin Rat
9.0%inclusion8 decks89 decks
8%synergy
Skullsnatcher
7.9%inclusion7 decks89 decks
7%synergy
Defiler of Flesh
7.9%inclusion7 decks89 decks
4%synergy
Instants
Defile
36%inclusion32 decks89 decks
0%synergy
Deadly Rollick
34%inclusion30 decks89 decks
9%synergy
Malakir Rebirth
33%inclusion29 decks89 decks
9%synergy
Village Rites
33%inclusion29 decks89 decks
7%synergy
Tainted Strike
29%inclusion26 decks89 decks
26%synergy
Whisper of the Dross
29%inclusion26 decks89 decks
27%synergy
Fell the Profane
27%inclusion24 decks89 decks
8%synergy
Go for the Throat
24%inclusion21 decks89 decks
1%synergy
Anoint with Affliction
22%inclusion20 decks89 decks
22%synergy
Withering Torment
22%inclusion17 decks77 decks
-9%synergy
Infernal Grasp
20%inclusion18 decks89 decks
-5%synergy
Deadly Dispute
19%inclusion17 decks89 decks
-7%synergy
Grim Affliction
18%inclusion16 decks89 decks
16%synergy
Consuming Corruption
16%inclusion14 decks89 decks
0%synergy
Corrupted Conviction
15%inclusion13 decks89 decks
2%synergy
Tragic Slip
15%inclusion13 decks89 decks
-5%synergy
Rat Out
13%inclusion12 decks89 decks
12%synergy
Foul-Tongue Shriek
13%inclusion12 decks89 decks
12%synergy
Sudden Spoiling
13%inclusion12 decks89 decks
5%synergy
Virulent Wound
11%inclusion10 decks89 decks
11%synergy
Bitter Triumph
11%inclusion10 decks89 decks
1%synergy
Darkness
10%inclusion9 decks89 decks
-0%synergy
Feign Death
10%inclusion9 decks89 decks
2%synergy
Snuff Out
10%inclusion9 decks89 decks
-3%synergy
Hagra Mauling
9.0%inclusion8 decks89 decks
5%synergy
Gravepurge
9.0%inclusion8 decks89 decks
7%synergy
Hero's Downfall
7.9%inclusion7 decks89 decks
1%synergy
Not Dead After All
6.7%inclusion6 decks89 decks
-5%synergy
Baleful Mastery
5.6%inclusion5 decks89 decks
-3%synergy
Sheoldred's Edict
5.6%inclusion5 decks89 decks
-9%synergy
Imp's Mischief
5.6%inclusion5 decks89 decks
-19%synergy
Sorceries
Feed the Swarm
48%inclusion43 decks89 decks
-2%synergy
Drown in Ichor
44%inclusion39 decks89 decks
40%synergy
Kindred Dominance
43%inclusion38 decks89 decks
38%synergy
Patriarch's Bidding
42%inclusion37 decks89 decks
37%synergy
Swarmyard Massacre
38%inclusion33 decks86 decks
36%synergy
Sign in Blood
35%inclusion31 decks89 decks
-0%synergy
Toxic Deluge
28%inclusion25 decks89 decks
-9%synergy
Crippling Fear
24%inclusion21 decks89 decks
21%synergy
Bloodline Bidding
23%inclusion7 decks30 decks
19%synergy
Night's Whisper
21%inclusion19 decks89 decks
-3%synergy
Plague of Vermin
21%inclusion19 decks89 decks
19%synergy
Damnation
20%inclusion18 decks89 decks
-0%synergy
Echoing Return
19%inclusion17 decks89 decks
16%synergy
Pact of the Serpent
18%inclusion16 decks89 decks
16%synergy
Revenge of the Rats
18%inclusion13 decks73 decks
15%synergy
Diabolic Intent
16%inclusion14 decks89 decks
1%synergy
Reanimate
15%inclusion13 decks89 decks
-25%synergy
Agadeem's Awakening
13%inclusion12 decks89 decks
6%synergy
Read the Bones
12%inclusion11 decks89 decks
-4%synergy
Vat Emergence
11%inclusion10 decks89 decks
10%synergy
Unearth
10%inclusion9 decks89 decks
1%synergy
Haunting Voyage
10%inclusion9 decks89 decks
9%synergy
Exsanguinate
10%inclusion9 decks89 decks
-15%synergy
Bubbling Muck
9.0%inclusion8 decks89 decks
-7%synergy
Insatiable Avarice
7.9%inclusion7 decks89 decks
-3%synergy
Geth's Summons
7.9%inclusion7 decks89 decks
7%synergy
Feed the Infection
7.9%inclusion7 decks89 decks
7%synergy
Diabolic Tutor
6.7%inclusion6 decks89 decks
-7%synergy
Syphon Mind
5.6%inclusion5 decks89 decks
-7%synergy
Grim Tutor
5.6%inclusion5 decks89 decks
-6%synergy
Spread the Sickness
5.6%inclusion5 decks89 decks
5%synergy
Torment of Hailfire
5.6%inclusion5 decks89 decks
-10%synergy
Forever Young
5.6%inclusion5 decks89 decks
4%synergy
In Garruk's Wake
5.6%inclusion5 decks89 decks
2%synergy
Gruesome Fate
5.6%inclusion5 decks89 decks
4%synergy
Utility Artifacts
Vanquisher's Banner
46%inclusion41 decks89 decks
42%synergy
Thrumming Stone
38%inclusion34 decks89 decks
34%synergy
Contagion Engine
34%inclusion30 decks89 decks
32%synergy
Whip of Erebos
33%inclusion29 decks89 decks
22%synergy
Door of Destinies
27%inclusion24 decks89 decks
25%synergy
Chronicle of Victory
27%inclusion8 decks30 decks
24%synergy
Coat of Arms
26%inclusion23 decks89 decks
23%synergy
Contagion Clasp
22%inclusion20 decks89 decks
20%synergy
Lightning Greaves
21%inclusion19 decks89 decks
-12%synergy
Eldrazi Monument
19%inclusion17 decks89 decks
17%synergy
Swiftfoot Boots
15%inclusion13 decks89 decks
-17%synergy
Ashnod's Altar
12%inclusion11 decks89 decks
-7%synergy
Banner of Kinship
12%inclusion9 decks73 decks
10%synergy
Wayfarer's Bauble
11%inclusion10 decks89 decks
-4%synergy
Grafted Exoskeleton
11%inclusion10 decks89 decks
10%synergy
Sword of Truth and Justice
10%inclusion9 decks89 decks
9%synergy
Gathering Stone
10%inclusion3 decks30 decks
9%synergy
The Darkness Crystal
10%inclusion5 decks52 decks
-10%synergy
Urza's Incubator
9.0%inclusion8 decks89 decks
7%synergy
Akroma's Memorial
7.9%inclusion7 decks89 decks
7%synergy
Expedition Map
6.7%inclusion6 decks89 decks
-5%synergy
Sword of Hearth and Home
5.6%inclusion5 decks89 decks
4%synergy
Phyrexian Altar
5.6%inclusion5 decks89 decks
-8%synergy
Obelisk of Urd
5.6%inclusion5 decks89 decks
5%synergy
Enchantments
Phyrexian Arena
47%inclusion42 decks89 decks
8%synergy
Black Market Connections
40%inclusion36 decks89 decks
16%synergy
Haunted One
31%inclusion28 decks89 decks
29%synergy
Necrogen Communion
28%inclusion25 decks89 decks
26%synergy
Grave Pact
27%inclusion24 decks89 decks
7%synergy
Phyresis
19%inclusion17 decks89 decks
17%synergy
Black Market
18%inclusion16 decks89 decks
-3%synergy
Oversold Cemetery
18%inclusion16 decks89 decks
13%synergy
The Meathook Massacre
16%inclusion14 decks89 decks
-2%synergy
Dictate of Erebos
16%inclusion14 decks89 decks
5%synergy
Bad Moon
15%inclusion13 decks89 decks
11%synergy
Tribute to Horobi
10%inclusion9 decks89 decks
9%synergy
Dark Prophecy
10%inclusion9 decks89 decks
6%synergy
Vampiric Rites
9.0%inclusion8 decks89 decks
3%synergy
Glistening Oil
9.0%inclusion8 decks89 decks
8%synergy
Phyrexian Reclamation
6.7%inclusion6 decks89 decks
-3%synergy
Planeswalkers
Vraska, Betrayal's Sting
36%inclusion32 decks89 decks
33%synergy
Liliana of the Dark Realms
16%inclusion14 decks89 decks
2%synergy
Utility Lands
Cabal Coffers
93%inclusion83 decks89 decks
38%synergy
Urborg, Tomb of Yawgmoth
78%inclusion69 decks89 decks
40%synergy
Nykthos, Shrine to Nyx
71%inclusion63 decks89 decks
41%synergy
Cabal Stronghold
57%inclusion51 decks89 decks
23%synergy
Three Tree City
52%inclusion45 decks87 decks
47%synergy
Karn's Bastion
49%inclusion44 decks89 decks
46%synergy
Mudflat Village
43%inclusion37 decks87 decks
40%synergy
Bojuka Bog
42%inclusion37 decks89 decks
-5%synergy
Phyrexian Tower
40%inclusion36 decks89 decks
15%synergy
Shizo, Death's Storehouse
31%inclusion28 decks89 decks
21%synergy
Rogue's Passage
31%inclusion28 decks89 decks
12%synergy
Takenuma, Abandoned Mire
29%inclusion26 decks89 decks
14%synergy
Crypt of Agadeem
28%inclusion25 decks89 decks
17%synergy
Reliquary Tower
28%inclusion25 decks89 decks
-2%synergy
Castle Locthwain
24%inclusion21 decks89 decks
7%synergy
Witch's Cottage
22%inclusion20 decks89 decks
-2%synergy
Mortuary Mire
17%inclusion15 decks89 decks
4%synergy
War Room
17%inclusion15 decks89 decks
1%synergy
Minas Morgul, Dark Fortress
17%inclusion15 decks89 decks
14%synergy
Secret Tunnel
15%inclusion6 decks39 decks
14%synergy
Mutavault
15%inclusion13 decks89 decks
14%synergy
Susur Secundi, Void Altar
11%inclusion5 decks44 decks
4%synergy
Inkmoth Nexus
10%inclusion9 decks89 decks
9%synergy
Access Tunnel
9.0%inclusion8 decks89 decks
6%synergy
Vesuva
7.9%inclusion7 decks89 decks
5%synergy
Volrath's Stronghold
7.9%inclusion7 decks89 decks
4%synergy
Midgar, City of Mako
7.8%inclusion4 decks51 decks
-3%synergy
Leechridden Swamp
6.7%inclusion6 decks89 decks
4%synergy
Barren Moor
6.7%inclusion6 decks89 decks
-3%synergy
High Market
5.6%inclusion5 decks89 decks
-2%synergy
Temple of the False God
5.6%inclusion5 decks89 decks
-2%synergy
Mana Artifacts
Sol Ring
79%inclusion70 decks89 decks
-7%synergy
Glistening Sphere
47%inclusion42 decks89 decks
46%synergy
Arcane Signet
46%inclusion41 decks89 decks
-16%synergy
Patchwork Banner
33%inclusion29 decks87 decks
29%synergy
Staff of Compleation
26%inclusion23 decks89 decks
24%synergy
The Soul Stone
24%inclusion10 decks42 decks
9%synergy
Heraldic Banner
15%inclusion13 decks89 decks
9%synergy
Gauntlet of Power
12%inclusion11 decks89 decks
9%synergy
Caged Sun
11%inclusion10 decks89 decks
0%synergy
Charcoal Diamond
11%inclusion10 decks89 decks
-11%synergy
Mind Stone
10%inclusion9 decks89 decks
-18%synergy
Throne of Eldraine
9.0%inclusion8 decks89 decks
-1%synergy
Thought Vessel
9.0%inclusion8 decks89 decks
-16%synergy
Phyrexian Atlas
7.9%inclusion7 decks89 decks
8%synergy
Extraplanar Lens
5.6%inclusion5 decks89 decks
1%synergy
Lands
Swamp
94%inclusion84 decks89 decks
-1%synergy
Cavern of Souls
52%inclusion46 decks89 decks
45%synergy
Path of Ancestry
43%inclusion38 decks89 decks
38%synergy
Malakir Rebirth
33%inclusion29 decks89 decks
9%synergy
Fell the Profane
27%inclusion24 decks89 decks
8%synergy
Myriad Landscape
20%inclusion18 decks89 decks
-5%synergy
Big Apple, 3 a.m.
15%inclusion4 decks26 decks
14%synergy
Agadeem's Awakening
13%inclusion12 decks89 decks
6%synergy
Urza's Cave
11%inclusion10 decks89 decks
3%synergy
Command Tower
9.0%inclusion8 decks89 decks
3%synergy
Polluted Delta
9.0%inclusion8 decks89 decks
5%synergy
Hagra Mauling
9.0%inclusion8 decks89 decks
5%synergy
Verdant Catacombs
7.9%inclusion7 decks89 decks
4%synergy
Snow-Covered Swamp
6.7%inclusion6 decks89 decks
0%synergy
Bloodstained Mire
6.7%inclusion6 decks89 decks
3%synergy
Marsh Flats
5.6%inclusion5 decks89 decks
2%synergy
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