Karumonix, the Rat King (Commander) - Expensive Rat Colony

Karumonix, the Rat King
Rank #384
70decks
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
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Rat Colony
100%inclusion70 decks70 decks
94%synergy
Marrow-Gnawer
91%inclusion64 decks70 decks
88%synergy
Piper of the Swarm
84%inclusion59 decks70 decks
77%synergy
Swarmyard
83%inclusion58 decks70 decks
77%synergy
Pack Rat
79%inclusion55 decks70 decks
73%synergy
Ashcoat of the Shadow Swarm
74%inclusion52 decks70 decks
71%synergy
Karn's Bastion
61%inclusion43 decks70 decks
57%synergy
Infectious Inquiry
54%inclusion38 decks70 decks
52%synergy
Ogre Slumlord
60%inclusion42 decks70 decks
50%synergy
Blightbelly Rat
53%inclusion37 decks70 decks
49%synergy
Top Cards
Jet Medallion
79%inclusion55 decks70 decks
17%synergy
Dark Ritual
76%inclusion53 decks70 decks
9%synergy
Bontu's Monument
67%inclusion47 decks70 decks
39%synergy
Skullclamp
57%inclusion40 decks70 decks
35%synergy
Lord Skitter, Sewer King
57%inclusion40 decks70 decks
49%synergy
Thrumming Stone
53%inclusion37 decks70 decks
49%synergy
Vraska's Fall
51%inclusion36 decks70 decks
48%synergy
Herald's Horn
51%inclusion36 decks70 decks
46%synergy
Crypt Rats
50%inclusion35 decks70 decks
45%synergy
Ichor Rats
50%inclusion35 decks70 decks
47%synergy
Game Changers
Demonic Tutor
90%inclusion63 decks70 decks
63%synergy
Vampiric Tutor
84%inclusion59 decks70 decks
63%synergy
Bolas's Citadel
30%inclusion21 decks70 decks
1%synergy
Imperial Seal
27%inclusion19 decks70 decks
20%synergy
Ancient Tomb
27%inclusion19 decks70 decks
16%synergy
The One Ring
21%inclusion15 decks70 decks
12%synergy
Chrome Mox
19%inclusion13 decks70 decks
13%synergy
Necropotence
16%inclusion11 decks70 decks
1%synergy
Mox Diamond
16%inclusion11 decks70 decks
12%synergy
Opposition Agent
10%inclusion7 decks70 decks
0%synergy
Creatures
Species Specialist
37%inclusion26 decks70 decks
34%synergy
Ayara, First of Locthwain
33%inclusion23 decks70 decks
7%synergy
Ink-Eyes, Servant of Oni
27%inclusion19 decks70 decks
24%synergy
Yawgmoth, Thran Physician
27%inclusion19 decks70 decks
17%synergy
Ratcatcher
27%inclusion19 decks70 decks
24%synergy
Crypt Ghast
26%inclusion18 decks70 decks
-22%synergy
Gnat Miser
26%inclusion18 decks70 decks
23%synergy
Nashi, Moon Sage's Scion
26%inclusion18 decks70 decks
22%synergy
Typhoid Rats
26%inclusion18 decks70 decks
22%synergy
Rancid Rats
26%inclusion18 decks70 decks
23%synergy
Septic Rats
24%inclusion17 decks70 decks
22%synergy
Burglar Rat
23%inclusion16 decks70 decks
12%synergy
Changeling Outcast
23%inclusion16 decks70 decks
18%synergy
Filth
21%inclusion15 decks70 decks
19%synergy
Gray Merchant of Asphodel
20%inclusion14 decks70 decks
-31%synergy
Tangled Colony
20%inclusion14 decks70 decks
17%synergy
Locust Miser
20%inclusion14 decks70 decks
18%synergy
Swarm of Rats
20%inclusion14 decks70 decks
17%synergy
Persistent Marshstalker
20%inclusion9 decks46 decks
17%synergy
Valley Rotcaller
20%inclusion9 decks46 decks
17%synergy
Lord Skitter's Butcher
19%inclusion13 decks70 decks
15%synergy
Stronghold Rats
19%inclusion13 decks70 decks
15%synergy
Roaming Throne
16%inclusion11 decks70 decks
13%synergy
Throat Slitter
13%inclusion9 decks70 decks
11%synergy
Wave of Rats
13%inclusion9 decks70 decks
11%synergy
Rev, Tithe Extractor
13%inclusion3 decks24 decks
11%synergy
Chittering Skitterling
11%inclusion8 decks70 decks
10%synergy
Ruthless Radrat
10%inclusion7 decks70 decks
9%synergy
Voracious Vermin
10%inclusion7 decks70 decks
7%synergy
Nezumi Informant
10%inclusion7 decks70 decks
3%synergy
Chittering Witch
8.6%inclusion6 decks70 decks
4%synergy
Dauthi Voidwalker
8.6%inclusion6 decks70 decks
-7%synergy
Old Flitterfang
8.6%inclusion6 decks70 decks
7%synergy
Crashing Drawbridge
7.1%inclusion5 decks70 decks
5%synergy
Sheoldred, the Apocalypse
7.1%inclusion5 decks70 decks
-7%synergy
Defiler of Flesh
7.1%inclusion5 decks70 decks
3%synergy
Braids, Arisen Nightmare
7.1%inclusion5 decks70 decks
-12%synergy
Zodiac Rat
5.7%inclusion4 decks70 decks
6%synergy
Zulaport Cutthroat
5.7%inclusion4 decks70 decks
-17%synergy
Skithiryx, the Blight Dragon
5.7%inclusion4 decks70 decks
4%synergy
Ruin Rat
5.7%inclusion4 decks70 decks
4%synergy
Innocuous Rat
5.4%inclusion2 decks37 decks
4%synergy
Instants
Deadly Rollick
47%inclusion33 decks70 decks
23%synergy
Village Rites
27%inclusion19 decks70 decks
2%synergy
Whisper of the Dross
26%inclusion18 decks70 decks
23%synergy
Defile
24%inclusion17 decks70 decks
-12%synergy
Infernal Grasp
24%inclusion17 decks70 decks
-1%synergy
Deadly Dispute
20%inclusion14 decks70 decks
-6%synergy
Go for the Throat
17%inclusion12 decks70 decks
-6%synergy
Malakir Rebirth
17%inclusion12 decks70 decks
-6%synergy
Withering Torment
16%inclusion6 decks37 decks
-15%synergy
Imp's Mischief
16%inclusion11 decks70 decks
-9%synergy
Culling the Weak
16%inclusion11 decks70 decks
0%synergy
Tragic Slip
14%inclusion10 decks70 decks
-6%synergy
Entomb
13%inclusion9 decks70 decks
1%synergy
Cabal Ritual
13%inclusion9 decks70 decks
-5%synergy
Tainted Strike
13%inclusion9 decks70 decks
10%synergy
Corrupted Conviction
11%inclusion8 decks70 decks
-1%synergy
Fell the Profane
10%inclusion6 decks61 decks
-9%synergy
Hero's Downfall
8.6%inclusion6 decks70 decks
2%synergy
Snuff Out
8.6%inclusion6 decks70 decks
-4%synergy
Baleful Mastery
8.6%inclusion6 decks70 decks
0%synergy
Anoint with Affliction
7.1%inclusion5 decks70 decks
7%synergy
Grim Affliction
7.1%inclusion5 decks70 decks
5%synergy
Bitter Triumph
7.1%inclusion5 decks70 decks
-3%synergy
Darkness
7.1%inclusion5 decks70 decks
-3%synergy
Foul-Tongue Shriek
7.1%inclusion5 decks70 decks
5%synergy
Sudden Spoiling
7.1%inclusion5 decks70 decks
-2%synergy
Fatal Push
5.7%inclusion4 decks70 decks
3%synergy
Sheoldred's Edict
5.7%inclusion4 decks70 decks
-9%synergy
Doom Blade
5.7%inclusion4 decks70 decks
-2%synergy
Dismember
5.7%inclusion4 decks70 decks
-5%synergy
Sorceries
Patriarch's Bidding
44%inclusion31 decks70 decks
40%synergy
Phyresis Outbreak
41%inclusion29 decks70 decks
40%synergy
Diabolic Intent
36%inclusion25 decks70 decks
21%synergy
Drown in Ichor
36%inclusion25 decks70 decks
32%synergy
Toxic Deluge
34%inclusion24 decks70 decks
-2%synergy
Grim Tutor
34%inclusion24 decks70 decks
23%synergy
Feed the Swarm
31%inclusion22 decks70 decks
-19%synergy
Damnation
30%inclusion21 decks70 decks
9%synergy
Kindred Dominance
29%inclusion20 decks70 decks
24%synergy
Reanimate
27%inclusion19 decks70 decks
-13%synergy
Echoing Return
24%inclusion17 decks70 decks
21%synergy
Plague of Vermin
23%inclusion16 decks70 decks
20%synergy
Sign in Blood
20%inclusion14 decks70 decks
-15%synergy
Pact of the Serpent
20%inclusion14 decks70 decks
18%synergy
Living Death
19%inclusion13 decks70 decks
8%synergy
Blasphemous Edict
17%inclusion4 decks23 decks
1%synergy
Swarmyard Massacre
16%inclusion7 decks44 decks
14%synergy
Diabolic Tutor
16%inclusion11 decks70 decks
1%synergy
Read the Bones
14%inclusion10 decks70 decks
-3%synergy
Secret Salvage
14%inclusion10 decks70 decks
13%synergy
Revenge of the Rats
13%inclusion3 decks23 decks
10%synergy
Night's Whisper
11%inclusion8 decks70 decks
-13%synergy
Crippling Fear
11%inclusion8 decks70 decks
8%synergy
Torment of Hailfire
10%inclusion7 decks70 decks
-5%synergy
Unearth
10%inclusion7 decks70 decks
1%synergy
Mutilate
10%inclusion7 decks70 decks
-7%synergy
Gruesome Fate
10%inclusion7 decks70 decks
8%synergy
Victimize
8.6%inclusion6 decks70 decks
-18%synergy
Bubbling Muck
8.6%inclusion6 decks70 decks
-7%synergy
Insatiable Avarice
8.6%inclusion6 decks70 decks
-3%synergy
Forever Young
7.1%inclusion5 decks70 decks
6%synergy
Haunting Voyage
7.1%inclusion5 decks70 decks
6%synergy
Spread the Sickness
5.7%inclusion4 decks70 decks
5%synergy
Caress of Phyrexia
5.7%inclusion4 decks70 decks
5%synergy
Geth's Summons
5.7%inclusion4 decks70 decks
5%synergy
Utility Artifacts
Vanquisher's Banner
33%inclusion23 decks70 decks
29%synergy
Lightning Greaves
27%inclusion19 decks70 decks
-6%synergy
Coat of Arms
24%inclusion17 decks70 decks
22%synergy
Whip of Erebos
23%inclusion16 decks70 decks
12%synergy
Door of Destinies
17%inclusion12 decks70 decks
15%synergy
Akroma's Memorial
16%inclusion11 decks70 decks
15%synergy
Contagion Clasp
14%inclusion10 decks70 decks
12%synergy
Contagion Engine
14%inclusion10 decks70 decks
12%synergy
Ashnod's Altar
14%inclusion10 decks70 decks
-6%synergy
Phyrexian Altar
14%inclusion10 decks70 decks
1%synergy
Thornbite Staff
13%inclusion9 decks70 decks
10%synergy
Eldrazi Monument
11%inclusion8 decks70 decks
10%synergy
Dolmen Gate
11%inclusion8 decks70 decks
11%synergy
Sword of the Squeak
9.1%inclusion4 decks44 decks
9%synergy
Sensei's Divining Top
8.6%inclusion6 decks70 decks
0%synergy
Wishclaw Talisman
8.6%inclusion6 decks70 decks
2%synergy
Swiftfoot Boots
8.6%inclusion6 decks70 decks
-23%synergy
Banner of Kinship
8.3%inclusion2 decks24 decks
6%synergy
Mirror Box
7.1%inclusion5 decks70 decks
6%synergy
Aetherflux Reservoir
7.1%inclusion5 decks70 decks
-2%synergy
Sword of Truth and Justice
7.1%inclusion5 decks70 decks
6%synergy
Locket of Yesterdays
7.1%inclusion5 decks70 decks
7%synergy
Grafted Exoskeleton
7.1%inclusion5 decks70 decks
6%synergy
Icon of Ancestry
5.7%inclusion4 decks70 decks
5%synergy
Altar of Dementia
5.7%inclusion4 decks70 decks
0%synergy
Enchantments
Cover of Darkness
46%inclusion32 decks70 decks
43%synergy
Phyrexian Arena
46%inclusion32 decks70 decks
6%synergy
Black Market Connections
37%inclusion26 decks70 decks
13%synergy
Grave Pact
30%inclusion21 decks70 decks
11%synergy
Haunted One
26%inclusion18 decks70 decks
23%synergy
Black Market
21%inclusion15 decks70 decks
0%synergy
The Meathook Massacre
19%inclusion13 decks70 decks
1%synergy
Dictate of Erebos
17%inclusion12 decks70 decks
6%synergy
Necrogen Communion
14%inclusion10 decks70 decks
12%synergy
Bad Moon
13%inclusion9 decks70 decks
10%synergy
Phyresis
11%inclusion8 decks70 decks
9%synergy
Oversold Cemetery
11%inclusion8 decks70 decks
6%synergy
Phyrexian Reclamation
10%inclusion7 decks70 decks
0%synergy
Contamination
8.6%inclusion6 decks70 decks
5%synergy
Sanguine Bond
7.1%inclusion5 decks70 decks
-5%synergy
Exquisite Blood
7.1%inclusion5 decks70 decks
-6%synergy
Tribute to Horobi
5.7%inclusion4 decks70 decks
5%synergy
Planeswalkers
Vraska, Betrayal's Sting
34%inclusion24 decks70 decks
32%synergy
Liliana of the Dark Realms
16%inclusion11 decks70 decks
2%synergy
Utility Lands
Cabal Coffers
90%inclusion63 decks70 decks
35%synergy
Urborg, Tomb of Yawgmoth
76%inclusion53 decks70 decks
38%synergy
Nykthos, Shrine to Nyx
74%inclusion52 decks70 decks
45%synergy
Bojuka Bog
54%inclusion38 decks70 decks
7%synergy
Three Tree City
52%inclusion24 decks46 decks
48%synergy
Cabal Stronghold
50%inclusion35 decks70 decks
15%synergy
Phyrexian Tower
50%inclusion35 decks70 decks
25%synergy
Reliquary Tower
46%inclusion32 decks70 decks
15%synergy
Rogue's Passage
40%inclusion28 decks70 decks
21%synergy
Shizo, Death's Storehouse
31%inclusion22 decks70 decks
21%synergy
War Room
27%inclusion19 decks70 decks
11%synergy
Castle Locthwain
23%inclusion16 decks70 decks
6%synergy
Witch's Cottage
21%inclusion15 decks70 decks
-3%synergy
Mudflat Village
20%inclusion10 decks49 decks
18%synergy
Crypt of Agadeem
20%inclusion14 decks70 decks
9%synergy
Takenuma, Abandoned Mire
17%inclusion12 decks70 decks
1%synergy
Inkmoth Nexus
16%inclusion11 decks70 decks
15%synergy
Mortuary Mire
14%inclusion10 decks70 decks
1%synergy
Urza's Saga
11%inclusion8 decks70 decks
3%synergy
Mutavault
8.6%inclusion6 decks70 decks
8%synergy
Minas Morgul, Dark Fortress
8.6%inclusion6 decks70 decks
6%synergy
Lake of the Dead
8.6%inclusion6 decks70 decks
3%synergy
Access Tunnel
8.6%inclusion6 decks70 decks
6%synergy
Strip Mine
7.1%inclusion5 decks70 decks
4%synergy
Volrath's Stronghold
5.7%inclusion4 decks70 decks
2%synergy
Leechridden Swamp
5.7%inclusion4 decks70 decks
3%synergy
Mana Artifacts
Sol Ring
89%inclusion62 decks70 decks
3%synergy
Arcane Signet
59%inclusion41 decks70 decks
-3%synergy
Glistening Sphere
40%inclusion28 decks70 decks
39%synergy
Staff of Compleation
27%inclusion19 decks70 decks
25%synergy
Jeweled Lotus
27%inclusion19 decks70 decks
26%synergy
Mana Crypt
26%inclusion18 decks70 decks
24%synergy
Patchwork Banner
16%inclusion7 decks45 decks
11%synergy
Thought Vessel
13%inclusion9 decks70 decks
-13%synergy
Gauntlet of Power
11%inclusion8 decks70 decks
8%synergy
Throne of Eldraine
10%inclusion7 decks70 decks
0%synergy
Mox Amber
10%inclusion7 decks70 decks
6%synergy
Nyx Lotus
10%inclusion7 decks70 decks
4%synergy
Lotus Petal
7.1%inclusion5 decks70 decks
0%synergy
Mana Vault
7.1%inclusion5 decks70 decks
1%synergy
Fellwar Stone
7.1%inclusion5 decks70 decks
-7%synergy
Mind Stone
7.1%inclusion5 decks70 decks
-22%synergy
Caged Sun
5.7%inclusion4 decks70 decks
-6%synergy
Charcoal Diamond
5.7%inclusion4 decks70 decks
-17%synergy
Mox Opal
5.7%inclusion4 decks70 decks
2%synergy
Lands
Swamp
86%inclusion60 decks70 decks
-9%synergy
Cavern of Souls
61%inclusion43 decks70 decks
55%synergy
Path of Ancestry
27%inclusion19 decks70 decks
22%synergy
Command Tower
17%inclusion12 decks70 decks
12%synergy
Malakir Rebirth
17%inclusion12 decks70 decks
-6%synergy
Myriad Landscape
16%inclusion11 decks70 decks
-10%synergy
Snow-Covered Swamp
16%inclusion11 decks70 decks
9%synergy
Verdant Catacombs
11%inclusion8 decks70 decks
8%synergy
Marsh Flats
11%inclusion8 decks70 decks
8%synergy
Bloodstained Mire
11%inclusion8 decks70 decks
8%synergy
Polluted Delta
10%inclusion7 decks70 decks
6%synergy
Fell the Profane
10%inclusion6 decks61 decks
-9%synergy
Gemstone Caverns
8.6%inclusion6 decks70 decks
4%synergy
Mirrex
5.7%inclusion4 decks70 decks
5%synergy
Evolving Wilds
5.7%inclusion4 decks70 decks
2%synergy
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