Karumonix, the Rat King (Commander) - Expensive Core

Karumonix, the Rat King
Rank #412
80decks
As CommanderAs CardAverage DeckDecks
Bracket
All1234
5
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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Hall of Echoes
50%inclusion1 decks2 decks
50%synergy
Orcrist, Goblin-cleaver
10%inclusion1 decks10 decks
9%synergy
High Synergy Cards
Marrow-Gnawer
94%inclusion75 decks80 decks
90%synergy
Piper of the Swarm
90%inclusion72 decks80 decks
83%synergy
Ashcoat of the Shadow Swarm
81%inclusion65 decks80 decks
78%synergy
Swarmyard
83%inclusion66 decks80 decks
77%synergy
Pack Rat
79%inclusion63 decks80 decks
73%synergy
Lord Skitter, Sewer King
78%inclusion62 decks80 decks
70%synergy
Ogre Slumlord
78%inclusion62 decks80 decks
68%synergy
Ichor Rats
63%inclusion50 decks80 decks
60%synergy
Rat Colony
65%inclusion52 decks80 decks
60%synergy
Blightbelly Rat
63%inclusion50 decks80 decks
59%synergy
Top Cards
Jet Medallion
88%inclusion70 decks80 decks
25%synergy
Bontu's Monument
63%inclusion50 decks80 decks
35%synergy
Dark Ritual
63%inclusion50 decks80 decks
-5%synergy
Cover of Darkness
60%inclusion48 decks80 decks
57%synergy
Skullclamp
57%inclusion46 decks80 decks
35%synergy
Infectious Inquiry
56%inclusion45 decks80 decks
54%synergy
Phyresis Outbreak
56%inclusion45 decks80 decks
55%synergy
Herald's Horn
56%inclusion45 decks80 decks
51%synergy
Feed the Swarm
54%inclusion43 decks80 decks
3%synergy
Vraska's Fall
54%inclusion43 decks80 decks
51%synergy
Game Changers
Demonic Tutor
7.5%inclusion6 decks80 decks
-19%synergy
Creatures
Lord Skitter's Butcher
51%inclusion41 decks80 decks
48%synergy
Ratcatcher
51%inclusion41 decks80 decks
48%synergy
Rat King, Verminister
50%inclusion19 decks38 decks
47%synergy
Septic Rats
49%inclusion39 decks80 decks
47%synergy
Tangled Colony
44%inclusion35 decks80 decks
41%synergy
Crypt Rats
43%inclusion34 decks80 decks
38%synergy
Species Specialist
43%inclusion34 decks80 decks
39%synergy
Persistent Marshstalker
43%inclusion34 decks80 decks
40%synergy
Typhoid Rats
43%inclusion34 decks80 decks
39%synergy
Rat King, Pale Piper
39%inclusion14 decks36 decks
35%synergy
Ayara, First of Locthwain
38%inclusion30 decks80 decks
12%synergy
Voracious Vermin
36%inclusion29 decks80 decks
34%synergy
Rancid Rats
36%inclusion29 decks80 decks
34%synergy
Crypt Ghast
35%inclusion28 decks80 decks
-12%synergy
Ink-Eyes, Servant of Oni
33%inclusion26 decks80 decks
29%synergy
Nashi, Moon Sage's Scion
31%inclusion25 decks80 decks
28%synergy
Burglar Rat
30%inclusion24 decks80 decks
20%synergy
Changeling Outcast
30%inclusion24 decks80 decks
25%synergy
Gnat Miser
30%inclusion24 decks80 decks
27%synergy
Wave of Rats
29%inclusion23 decks80 decks
27%synergy
Stronghold Rats
29%inclusion23 decks80 decks
25%synergy
Swarm of Rats
25%inclusion20 decks80 decks
23%synergy
Chittering Skitterling
21%inclusion17 decks80 decks
20%synergy
Valley Rotcaller
21%inclusion17 decks80 decks
19%synergy
Engine Rat
20%inclusion14 decks70 decks
18%synergy
Yawgmoth, Thran Physician
20%inclusion16 decks80 decks
10%synergy
Nezumi Prowler
20%inclusion16 decks80 decks
19%synergy
Throat Slitter
18%inclusion14 decks80 decks
16%synergy
Zodiac Rat
18%inclusion14 decks80 decks
17%synergy
Nezumi Informant
18%inclusion14 decks80 decks
11%synergy
Filth
16%inclusion13 decks80 decks
14%synergy
Nezumi Graverobber
14%inclusion11 decks80 decks
13%synergy
Gnawing Vermin
14%inclusion11 decks80 decks
12%synergy
Roaming Throne
14%inclusion11 decks80 decks
11%synergy
Locust Miser
14%inclusion11 decks80 decks
12%synergy
Drainpipe Vermin
14%inclusion11 decks80 decks
12%synergy
Pestilence Rats
14%inclusion11 decks80 decks
12%synergy
Undercity Dire Rat
13%inclusion8 decks60 decks
12%synergy
Gray Merchant of Asphodel
13%inclusion10 decks80 decks
-38%synergy
Razortooth Rats
13%inclusion10 decks80 decks
12%synergy
Twisted Sewer-Witch
13%inclusion10 decks80 decks
11%synergy
Rotting Rats
11%inclusion9 decks80 decks
8%synergy
Chittering Witch
11%inclusion9 decks80 decks
7%synergy
Relentless Rats
10%inclusion8 decks80 decks
8%synergy
Ruthless Radrat
10%inclusion8 decks80 decks
9%synergy
Adaptive Automaton
10%inclusion8 decks80 decks
9%synergy
Nezumi Cutthroat
10%inclusion8 decks80 decks
9%synergy
Refurbished Familiar
8.8%inclusion7 decks80 decks
7%synergy
Zulaport Cutthroat
8.8%inclusion7 decks80 decks
-14%synergy
Old Flitterfang
8.8%inclusion7 decks80 decks
8%synergy
Instants
Deadly Rollick
40%inclusion32 decks80 decks
14%synergy
Malakir Rebirth
40%inclusion32 decks80 decks
16%synergy
Fell the Profane
33%inclusion26 decks80 decks
13%synergy
Village Rites
31%inclusion25 decks80 decks
5%synergy
Defile
30%inclusion24 decks80 decks
-5%synergy
Whisper of the Dross
28%inclusion22 decks80 decks
25%synergy
Tainted Strike
28%inclusion22 decks80 decks
25%synergy
Go for the Throat
21%inclusion17 decks80 decks
-1%synergy
Deadly Dispute
20%inclusion16 decks80 decks
-7%synergy
Consuming Corruption
18%inclusion14 decks80 decks
2%synergy
Withering Torment
18%inclusion14 decks80 decks
-14%synergy
Anoint with Affliction
16%inclusion13 decks80 decks
16%synergy
Infernal Grasp
16%inclusion13 decks80 decks
-9%synergy
Grim Affliction
15%inclusion12 decks80 decks
13%synergy
Snuff Out
14%inclusion11 decks80 decks
-0%synergy
Sudden Spoiling
13%inclusion10 decks80 decks
4%synergy
Rat Out
11%inclusion9 decks80 decks
10%synergy
Feign Death
11%inclusion9 decks80 decks
3%synergy
Tragic Slip
11%inclusion9 decks80 decks
-7%synergy
Hagra Mauling
10%inclusion8 decks80 decks
6%synergy
Foul-Tongue Shriek
10%inclusion8 decks80 decks
8%synergy
Corrupted Conviction
10%inclusion8 decks80 decks
-2%synergy
Virulent Wound
8.8%inclusion7 decks80 decks
8%synergy
Bitter Triumph
8.8%inclusion7 decks80 decks
-1%synergy
Plumb the Forbidden
8.8%inclusion7 decks80 decks
4%synergy
Imp's Mischief
7.5%inclusion6 decks80 decks
-18%synergy
Cabal Ritual
7.5%inclusion6 decks80 decks
-11%synergy
Darkness
7.5%inclusion6 decks80 decks
-3%synergy
Gravepurge
7.5%inclusion6 decks80 decks
6%synergy
Hero's Downfall
6.3%inclusion5 decks80 decks
-0%synergy
Not Dead After All
6.3%inclusion5 decks80 decks
-5%synergy
Culling the Weak
6.3%inclusion5 decks80 decks
-12%synergy
Force of Despair
5.0%inclusion4 decks80 decks
-2%synergy
Soul Shatter
5.0%inclusion4 decks80 decks
-6%synergy
Offer Immortality
5.0%inclusion4 decks80 decks
3%synergy
Dismember
5.0%inclusion4 decks80 decks
-5%synergy
Sorceries
Patriarch's Bidding
43%inclusion34 decks80 decks
39%synergy
Swarmyard Massacre
43%inclusion34 decks80 decks
40%synergy
Kindred Dominance
43%inclusion34 decks80 decks
38%synergy
Drown in Ichor
38%inclusion30 decks80 decks
34%synergy
Sign in Blood
33%inclusion26 decks80 decks
-2%synergy
Toxic Deluge
26%inclusion21 decks80 decks
-11%synergy
Crippling Fear
24%inclusion19 decks80 decks
21%synergy
Night's Whisper
23%inclusion18 decks80 decks
-3%synergy
Revenge of the Rats
21%inclusion16 decks78 decks
17%synergy
Bloodline Bidding
21%inclusion8 decks39 decks
17%synergy
Plague of Vermin
20%inclusion16 decks80 decks
18%synergy
Echoing Return
18%inclusion14 decks80 decks
15%synergy
Damnation
18%inclusion14 decks80 decks
-2%synergy
Diabolic Intent
16%inclusion13 decks80 decks
1%synergy
Reanimate
16%inclusion13 decks80 decks
-25%synergy
Pact of the Serpent
16%inclusion13 decks80 decks
15%synergy
Agadeem's Awakening
15%inclusion12 decks80 decks
7%synergy
Unearth
11%inclusion9 decks80 decks
2%synergy
Exsanguinate
10%inclusion8 decks80 decks
-15%synergy
Bubbling Muck
8.8%inclusion7 decks80 decks
-7%synergy
Read the Bones
8.8%inclusion7 decks80 decks
-7%synergy
Living Death
8.8%inclusion7 decks80 decks
-2%synergy
Insatiable Avarice
8.8%inclusion7 decks80 decks
-2%synergy
Decorum Dissertation
8.0%inclusion2 decks25 decks
2%synergy
Haunting Voyage
7.5%inclusion6 decks80 decks
6%synergy
Vat Emergence
6.3%inclusion5 decks80 decks
5%synergy
Victimize
6.3%inclusion5 decks80 decks
-22%synergy
Torment of Hailfire
6.3%inclusion5 decks80 decks
-8%synergy
Forever Young
6.3%inclusion5 decks80 decks
5%synergy
Secret Salvage
6.3%inclusion5 decks80 decks
5%synergy
Shredder's Technique
5.6%inclusion2 decks36 decks
3%synergy
Diabolic Tutor
5.0%inclusion4 decks80 decks
-8%synergy
Mutilate
5.0%inclusion4 decks80 decks
-10%synergy
Geth's Summons
5.0%inclusion4 decks80 decks
5%synergy
Lab Rats
5.0%inclusion4 decks80 decks
5%synergy
Utility Artifacts
Vanquisher's Banner
43%inclusion34 decks80 decks
39%synergy
Thrumming Stone
40%inclusion32 decks80 decks
36%synergy
Whip of Erebos
30%inclusion24 decks80 decks
19%synergy
Contagion Engine
28%inclusion22 decks80 decks
26%synergy
Lightning Greaves
26%inclusion21 decks80 decks
-8%synergy
Chronicle of Victory
26%inclusion10 decks39 decks
23%synergy
Contagion Clasp
20%inclusion16 decks80 decks
18%synergy
Coat of Arms
20%inclusion16 decks80 decks
18%synergy
Door of Destinies
19%inclusion15 decks80 decks
17%synergy
Eldrazi Monument
19%inclusion15 decks80 decks
17%synergy
Ashnod's Altar
15%inclusion12 decks80 decks
-5%synergy
Wayfarer's Bauble
14%inclusion11 decks80 decks
-1%synergy
Swiftfoot Boots
14%inclusion11 decks80 decks
-18%synergy
Expedition Map
11%inclusion9 decks80 decks
0%synergy
Banner of Kinship
10%inclusion8 decks78 decks
8%synergy
Sword of Truth and Justice
10%inclusion8 decks80 decks
9%synergy
Sword of Hearth and Home
10%inclusion8 decks80 decks
9%synergy
Urza's Incubator
10%inclusion8 decks80 decks
8%synergy
Grafted Exoskeleton
10%inclusion8 decks80 decks
9%synergy
Akroma's Memorial
7.5%inclusion6 decks80 decks
7%synergy
The Darkness Crystal
6.7%inclusion4 decks60 decks
-13%synergy
Mirror Box
6.3%inclusion5 decks80 decks
6%synergy
Phyrexian Altar
6.3%inclusion5 decks80 decks
-8%synergy
Whispersilk Cloak
6.3%inclusion5 decks80 decks
0%synergy
Gathering Stone
5.1%inclusion2 decks39 decks
4%synergy
Vat of Rebirth
5.0%inclusion4 decks80 decks
2%synergy
Locket of Yesterdays
5.0%inclusion4 decks80 decks
5%synergy
Sword of the Animist
5.0%inclusion4 decks80 decks
1%synergy
Enchantments
Phyrexian Arena
43%inclusion34 decks80 decks
3%synergy
Black Market Connections
41%inclusion33 decks80 decks
16%synergy
Grave Pact
26%inclusion21 decks80 decks
7%synergy
Haunted One
25%inclusion20 decks80 decks
23%synergy
Necrogen Communion
25%inclusion20 decks80 decks
23%synergy
Phyresis
20%inclusion16 decks80 decks
18%synergy
Black Market
18%inclusion14 decks80 decks
-3%synergy
The Meathook Massacre
15%inclusion12 decks80 decks
-2%synergy
Dictate of Erebos
15%inclusion12 decks80 decks
4%synergy
Bad Moon
15%inclusion12 decks80 decks
12%synergy
Oversold Cemetery
14%inclusion11 decks80 decks
9%synergy
Dark Prophecy
13%inclusion10 decks80 decks
9%synergy
Glistening Oil
11%inclusion9 decks80 decks
11%synergy
Phyrexian Reclamation
8.8%inclusion7 decks80 decks
-1%synergy
Tribute to Horobi
8.8%inclusion7 decks80 decks
8%synergy
Vampiric Rites
7.5%inclusion6 decks80 decks
2%synergy
Chthonian Nightmare
5.0%inclusion4 decks80 decks
1%synergy
Bastion of Remembrance
5.0%inclusion4 decks80 decks
-12%synergy
Planeswalkers
Vraska, Betrayal's Sting
31%inclusion25 decks80 decks
29%synergy
Liliana of the Dark Realms
15%inclusion12 decks80 decks
1%synergy
Utility Lands
Cabal Coffers
88%inclusion70 decks80 decks
33%synergy
Urborg, Tomb of Yawgmoth
80%inclusion64 decks80 decks
42%synergy
Nykthos, Shrine to Nyx
75%inclusion60 decks80 decks
45%synergy
Cabal Stronghold
55%inclusion44 decks80 decks
21%synergy
Three Tree City
54%inclusion43 decks80 decks
49%synergy
Karn's Bastion
50%inclusion40 decks80 decks
46%synergy
Phyrexian Tower
45%inclusion36 decks80 decks
18%synergy
Mudflat Village
45%inclusion36 decks80 decks
42%synergy
Bojuka Bog
40%inclusion32 decks80 decks
-7%synergy
Takenuma, Abandoned Mire
31%inclusion25 decks80 decks
15%synergy
Reliquary Tower
31%inclusion25 decks80 decks
2%synergy
Rogue's Passage
30%inclusion24 decks80 decks
10%synergy
Shizo, Death's Storehouse
28%inclusion22 decks80 decks
17%synergy
Crypt of Agadeem
28%inclusion22 decks80 decks
16%synergy
Witch's Cottage
21%inclusion17 decks80 decks
-3%synergy
Mortuary Mire
20%inclusion16 decks80 decks
7%synergy
Castle Locthwain
20%inclusion16 decks80 decks
3%synergy
War Room
19%inclusion15 decks80 decks
3%synergy
Mutavault
16%inclusion13 decks80 decks
16%synergy
Minas Morgul, Dark Fortress
15%inclusion12 decks80 decks
12%synergy
Secret Tunnel
15%inclusion7 decks47 decks
14%synergy
Inkmoth Nexus
13%inclusion10 decks80 decks
12%synergy
Volrath's Stronghold
13%inclusion10 decks80 decks
9%synergy
Vesuva
10%inclusion8 decks80 decks
7%synergy
Susur Secundi, Void Altar
10%inclusion5 decks52 decks
3%synergy
Barren Moor
8.8%inclusion7 decks80 decks
-0%synergy
Access Tunnel
8.8%inclusion7 decks80 decks
6%synergy
Midgar, City of Mako
8.3%inclusion5 decks60 decks
-2%synergy
High Market
7.5%inclusion6 decks80 decks
-1%synergy
Deserted Temple
7.5%inclusion6 decks80 decks
3%synergy
Leechridden Swamp
7.5%inclusion6 decks80 decks
5%synergy
Temple of the False God
6.3%inclusion5 decks80 decks
-1%synergy
Command Beacon
5.0%inclusion4 decks80 decks
-3%synergy
Mana Artifacts
Sol Ring
76%inclusion61 decks80 decks
-9%synergy
Arcane Signet
54%inclusion43 decks80 decks
-8%synergy
Glistening Sphere
49%inclusion39 decks80 decks
48%synergy
Patchwork Banner
34%inclusion27 decks80 decks
29%synergy
The Soul Stone
28%inclusion14 decks50 decks
12%synergy
Staff of Compleation
21%inclusion17 decks80 decks
20%synergy
Caged Sun
13%inclusion10 decks80 decks
2%synergy
Gauntlet of Power
10%inclusion8 decks80 decks
7%synergy
Charcoal Diamond
10%inclusion8 decks80 decks
-12%synergy
Thought Vessel
10%inclusion8 decks80 decks
-14%synergy
Mind Stone
10%inclusion8 decks80 decks
-18%synergy
Heraldic Banner
8.8%inclusion7 decks80 decks
4%synergy
Throne of Eldraine
6.3%inclusion5 decks80 decks
-3%synergy
Extraplanar Lens
6.3%inclusion5 decks80 decks
1%synergy
Phyrexian Atlas
5.0%inclusion4 decks80 decks
5%synergy
Lands
Swamp
94%inclusion75 decks80 decks
-2%synergy
Cavern of Souls
53%inclusion42 decks80 decks
46%synergy
Malakir Rebirth
40%inclusion32 decks80 decks
16%synergy
Path of Ancestry
40%inclusion32 decks80 decks
35%synergy
Fell the Profane
33%inclusion26 decks80 decks
13%synergy
Myriad Landscape
18%inclusion14 decks80 decks
-7%synergy
Urza's Cave
15%inclusion12 decks80 decks
7%synergy
Agadeem's Awakening
15%inclusion12 decks80 decks
7%synergy
Big Apple, 3 a.m.
14%inclusion5 decks36 decks
12%synergy
Hagra Mauling
10%inclusion8 decks80 decks
6%synergy
Verdant Catacombs
7.5%inclusion6 decks80 decks
4%synergy
Snow-Covered Swamp
7.5%inclusion6 decks80 decks
1%synergy
Polluted Delta
7.5%inclusion6 decks80 decks
4%synergy
Command Tower
6.3%inclusion5 decks80 decks
0%synergy
Bloodstained Mire
6.3%inclusion5 decks80 decks
2%synergy
Marsh Flats
5.0%inclusion4 decks80 decks
1%synergy
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