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

Karumonix, the Rat King
Rank #399
48decks
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%inclusion48 decks48 decks
94%synergy
Marrow-Gnawer
92%inclusion44 decks48 decks
88%synergy
Piper of the Swarm
81%inclusion39 decks48 decks
74%synergy
Ashcoat of the Shadow Swarm
77%inclusion37 decks48 decks
74%synergy
Pack Rat
79%inclusion38 decks48 decks
73%synergy
Swarmyard
73%inclusion35 decks48 decks
67%synergy
Blightbelly Rat
56%inclusion27 decks48 decks
53%synergy
Karn's Bastion
56%inclusion27 decks48 decks
52%synergy
Infectious Inquiry
54%inclusion26 decks48 decks
52%synergy
Lord Skitter, Sewer King
58%inclusion28 decks48 decks
50%synergy
Top Cards
Jet Medallion
79%inclusion38 decks48 decks
17%synergy
Dark Ritual
77%inclusion37 decks48 decks
10%synergy
Bontu's Monument
69%inclusion33 decks48 decks
40%synergy
Skullclamp
56%inclusion27 decks48 decks
34%synergy
Ogre Slumlord
54%inclusion26 decks48 decks
44%synergy
Vraska's Fall
52%inclusion25 decks48 decks
49%synergy
Deadly Rollick
50%inclusion24 decks48 decks
25%synergy
Crypt Rats
50%inclusion24 decks48 decks
46%synergy
Herald's Horn
50%inclusion24 decks48 decks
44%synergy
Phyresis Outbreak
46%inclusion22 decks48 decks
44%synergy
Game Changers
Demonic Tutor
90%inclusion43 decks48 decks
62%synergy
Vampiric Tutor
81%inclusion39 decks48 decks
60%synergy
Imperial Seal
31%inclusion15 decks48 decks
24%synergy
The One Ring
29%inclusion14 decks48 decks
20%synergy
Ancient Tomb
25%inclusion12 decks48 decks
13%synergy
Bolas's Citadel
25%inclusion12 decks48 decks
-3%synergy
Necropotence
17%inclusion8 decks48 decks
2%synergy
Mox Diamond
17%inclusion8 decks48 decks
13%synergy
Chrome Mox
15%inclusion7 decks48 decks
9%synergy
Opposition Agent
6.3%inclusion3 decks48 decks
-3%synergy
Creatures
Ichor Rats
46%inclusion22 decks48 decks
43%synergy
Ayara, First of Locthwain
38%inclusion18 decks48 decks
12%synergy
Species Specialist
35%inclusion17 decks48 decks
32%synergy
Septic Rats
29%inclusion14 decks48 decks
27%synergy
Rancid Rats
29%inclusion14 decks48 decks
27%synergy
Lord Skitter's Butcher
27%inclusion13 decks48 decks
24%synergy
Tangled Colony
25%inclusion12 decks48 decks
22%synergy
Ink-Eyes, Servant of Oni
25%inclusion12 decks48 decks
22%synergy
Persistent Marshstalker
25%inclusion12 decks48 decks
22%synergy
Yawgmoth, Thran Physician
25%inclusion12 decks48 decks
15%synergy
Ratcatcher
25%inclusion12 decks48 decks
22%synergy
Typhoid Rats
25%inclusion12 decks48 decks
21%synergy
Burglar Rat
23%inclusion11 decks48 decks
12%synergy
Gray Merchant of Asphodel
23%inclusion11 decks48 decks
-28%synergy
Swarm of Rats
23%inclusion11 decks48 decks
20%synergy
Valley Rotcaller
23%inclusion11 decks48 decks
20%synergy
Crypt Ghast
23%inclusion11 decks48 decks
-24%synergy
Gnat Miser
23%inclusion11 decks48 decks
20%synergy
Filth
21%inclusion10 decks48 decks
18%synergy
Locust Miser
21%inclusion10 decks48 decks
19%synergy
Nashi, Moon Sage's Scion
21%inclusion10 decks48 decks
17%synergy
Stronghold Rats
19%inclusion9 decks48 decks
15%synergy
Roaming Throne
17%inclusion8 decks48 decks
14%synergy
Voracious Vermin
17%inclusion8 decks48 decks
14%synergy
Changeling Outcast
17%inclusion8 decks48 decks
12%synergy
Rev, Tithe Extractor
12%inclusion3 decks26 decks
10%synergy
Throat Slitter
10%inclusion5 decks48 decks
9%synergy
Chittering Skitterling
10%inclusion5 decks48 decks
10%synergy
Chittering Witch
10%inclusion5 decks48 decks
6%synergy
Nezumi Informant
10%inclusion5 decks48 decks
4%synergy
Old Flitterfang
10%inclusion5 decks48 decks
9%synergy
Crashing Drawbridge
8.3%inclusion4 decks48 decks
6%synergy
Ruthless Radrat
8.3%inclusion4 decks48 decks
8%synergy
Sheoldred, the Apocalypse
8.3%inclusion4 decks48 decks
-6%synergy
Pestilence Rats
8.3%inclusion4 decks48 decks
6%synergy
Wave of Rats
8.3%inclusion4 decks48 decks
7%synergy
Blood Artist
6.3%inclusion3 decks48 decks
-26%synergy
Infected Vermin
6.3%inclusion3 decks48 decks
6%synergy
Scrib Nibblers
6.3%inclusion3 decks48 decks
6%synergy
Zodiac Rat
6.3%inclusion3 decks48 decks
6%synergy
Twisted Sewer-Witch
6.3%inclusion3 decks48 decks
5%synergy
Nezumi Cutthroat
6.3%inclusion3 decks48 decks
6%synergy
Skithiryx, the Blight Dragon
6.3%inclusion3 decks48 decks
5%synergy
Dauthi Voidwalker
6.3%inclusion3 decks48 decks
-9%synergy
Ruin Rat
6.3%inclusion3 decks48 decks
5%synergy
Innocuous Rat
5.1%inclusion2 decks39 decks
4%synergy
Instants
Village Rites
27%inclusion13 decks48 decks
2%synergy
Whisper of the Dross
23%inclusion11 decks48 decks
20%synergy
Defile
23%inclusion11 decks48 decks
-13%synergy
Infernal Grasp
21%inclusion10 decks48 decks
-4%synergy
Withering Torment
18%inclusion7 decks39 decks
-13%synergy
Go for the Throat
17%inclusion8 decks48 decks
-6%synergy
Deadly Dispute
17%inclusion8 decks48 decks
-10%synergy
Malakir Rebirth
17%inclusion8 decks48 decks
-7%synergy
Fell the Profane
15%inclusion7 decks48 decks
-5%synergy
Entomb
13%inclusion6 decks48 decks
0%synergy
Imp's Mischief
13%inclusion6 decks48 decks
-13%synergy
Cabal Ritual
13%inclusion6 decks48 decks
-6%synergy
Corrupted Conviction
13%inclusion6 decks48 decks
0%synergy
Tragic Slip
13%inclusion6 decks48 decks
-7%synergy
Snuff Out
10%inclusion5 decks48 decks
-3%synergy
Tainted Strike
10%inclusion5 decks48 decks
7%synergy
Hero's Downfall
8.3%inclusion4 decks48 decks
2%synergy
Anoint with Affliction
8.3%inclusion4 decks48 decks
8%synergy
Grim Affliction
8.3%inclusion4 decks48 decks
6%synergy
Doom Blade
8.3%inclusion4 decks48 decks
1%synergy
Culling the Weak
8.3%inclusion4 decks48 decks
-9%synergy
Sheoldred's Edict
6.3%inclusion3 decks48 decks
-9%synergy
Rat Out
6.3%inclusion3 decks48 decks
5%synergy
Bitter Triumph
6.3%inclusion3 decks48 decks
-4%synergy
Darkness
6.3%inclusion3 decks48 decks
-4%synergy
Foul-Tongue Shriek
6.3%inclusion3 decks48 decks
4%synergy
Sudden Spoiling
6.3%inclusion3 decks48 decks
-2%synergy
Sorceries
Patriarch's Bidding
40%inclusion19 decks48 decks
36%synergy
Diabolic Intent
35%inclusion17 decks48 decks
20%synergy
Grim Tutor
35%inclusion17 decks48 decks
24%synergy
Kindred Dominance
33%inclusion16 decks48 decks
29%synergy
Reanimate
31%inclusion15 decks48 decks
-9%synergy
Toxic Deluge
31%inclusion15 decks48 decks
-6%synergy
Drown in Ichor
31%inclusion15 decks48 decks
28%synergy
Damnation
29%inclusion14 decks48 decks
9%synergy
Feed the Swarm
27%inclusion13 decks48 decks
-23%synergy
Echoing Return
27%inclusion13 decks48 decks
24%synergy
Plague of Vermin
25%inclusion12 decks48 decks
23%synergy
Living Death
21%inclusion10 decks48 decks
11%synergy
Sign in Blood
21%inclusion10 decks48 decks
-14%synergy
Pact of the Serpent
21%inclusion10 decks48 decks
19%synergy
Blasphemous Edict
20%inclusion5 decks25 decks
4%synergy
Swarmyard Massacre
20%inclusion9 decks46 decks
17%synergy
Diabolic Tutor
19%inclusion9 decks48 decks
5%synergy
Secret Salvage
17%inclusion8 decks48 decks
15%synergy
Revenge of the Rats
16%inclusion4 decks25 decks
13%synergy
Victimize
13%inclusion6 decks48 decks
-15%synergy
Read the Bones
13%inclusion6 decks48 decks
-4%synergy
Night's Whisper
13%inclusion6 decks48 decks
-12%synergy
Crippling Fear
13%inclusion6 decks48 decks
10%synergy
Torment of Hailfire
10%inclusion5 decks48 decks
-5%synergy
Unearth
10%inclusion5 decks48 decks
2%synergy
Mutilate
10%inclusion5 decks48 decks
-6%synergy
Caress of Phyrexia
10%inclusion5 decks48 decks
10%synergy
Spread the Sickness
8.3%inclusion4 decks48 decks
8%synergy
Bubbling Muck
8.3%inclusion4 decks48 decks
-7%synergy
Gruesome Fate
8.3%inclusion4 decks48 decks
6%synergy
Forever Young
6.3%inclusion3 decks48 decks
5%synergy
In Garruk's Wake
6.3%inclusion3 decks48 decks
2%synergy
Insatiable Avarice
6.3%inclusion3 decks48 decks
-5%synergy
Utility Artifacts
Thrumming Stone
46%inclusion22 decks48 decks
42%synergy
Vanquisher's Banner
35%inclusion17 decks48 decks
32%synergy
Whip of Erebos
23%inclusion11 decks48 decks
12%synergy
Coat of Arms
23%inclusion11 decks48 decks
20%synergy
Lightning Greaves
23%inclusion11 decks48 decks
-11%synergy
Door of Destinies
21%inclusion10 decks48 decks
19%synergy
Akroma's Memorial
19%inclusion9 decks48 decks
18%synergy
Thornbite Staff
19%inclusion9 decks48 decks
16%synergy
Contagion Engine
17%inclusion8 decks48 decks
15%synergy
Phyrexian Altar
17%inclusion8 decks48 decks
3%synergy
Ashnod's Altar
13%inclusion6 decks48 decks
-7%synergy
Swiftfoot Boots
13%inclusion6 decks48 decks
-19%synergy
Contagion Clasp
10%inclusion5 decks48 decks
8%synergy
Eldrazi Monument
10%inclusion5 decks48 decks
9%synergy
Dolmen Gate
10%inclusion5 decks48 decks
10%synergy
Sword of the Squeak
8.7%inclusion4 decks46 decks
8%synergy
Sensei's Divining Top
8.3%inclusion4 decks48 decks
0%synergy
Sword of Truth and Justice
8.3%inclusion4 decks48 decks
8%synergy
Locket of Yesterdays
8.3%inclusion4 decks48 decks
8%synergy
Banner of Kinship
7.7%inclusion2 decks26 decks
6%synergy
Wayfarer's Bauble
6.3%inclusion3 decks48 decks
-9%synergy
Mirror Box
6.3%inclusion3 decks48 decks
6%synergy
Aetherflux Reservoir
6.3%inclusion3 decks48 decks
-3%synergy
Wishclaw Talisman
6.3%inclusion3 decks48 decks
-1%synergy
Altar of the Brood
6.3%inclusion3 decks48 decks
4%synergy
Altar of Dementia
6.3%inclusion3 decks48 decks
1%synergy
Sword of the Animist
6.3%inclusion3 decks48 decks
2%synergy
Grafted Exoskeleton
6.3%inclusion3 decks48 decks
5%synergy
Enchantments
Cover of Darkness
44%inclusion21 decks48 decks
41%synergy
Phyrexian Arena
44%inclusion21 decks48 decks
4%synergy
Black Market Connections
40%inclusion19 decks48 decks
15%synergy
Grave Pact
27%inclusion13 decks48 decks
8%synergy
Haunted One
21%inclusion10 decks48 decks
18%synergy
Black Market
19%inclusion9 decks48 decks
-2%synergy
The Meathook Massacre
17%inclusion8 decks48 decks
-1%synergy
Necrogen Communion
17%inclusion8 decks48 decks
15%synergy
Phyrexian Reclamation
13%inclusion6 decks48 decks
3%synergy
Dictate of Erebos
13%inclusion6 decks48 decks
1%synergy
Sanguine Bond
10%inclusion5 decks48 decks
-1%synergy
Exquisite Blood
10%inclusion5 decks48 decks
-3%synergy
Phyresis
10%inclusion5 decks48 decks
8%synergy
Bad Moon
10%inclusion5 decks48 decks
7%synergy
Tribute to Horobi
8.3%inclusion4 decks48 decks
7%synergy
Oversold Cemetery
8.3%inclusion4 decks48 decks
3%synergy
Planeswalkers
Vraska, Betrayal's Sting
33%inclusion16 decks48 decks
31%synergy
Liliana of the Dark Realms
15%inclusion7 decks48 decks
1%synergy
Utility Lands
Cabal Coffers
88%inclusion42 decks48 decks
33%synergy
Nykthos, Shrine to Nyx
71%inclusion34 decks48 decks
41%synergy
Urborg, Tomb of Yawgmoth
69%inclusion33 decks48 decks
31%synergy
Bojuka Bog
56%inclusion27 decks48 decks
9%synergy
Cabal Stronghold
52%inclusion25 decks48 decks
18%synergy
Phyrexian Tower
52%inclusion25 decks48 decks
26%synergy
Reliquary Tower
50%inclusion24 decks48 decks
20%synergy
Three Tree City
50%inclusion24 decks48 decks
45%synergy
Rogue's Passage
38%inclusion18 decks48 decks
18%synergy
War Room
27%inclusion13 decks48 decks
11%synergy
Shizo, Death's Storehouse
25%inclusion12 decks48 decks
15%synergy
Witch's Cottage
23%inclusion11 decks48 decks
-2%synergy
Crypt of Agadeem
19%inclusion9 decks48 decks
7%synergy
Mudflat Village
19%inclusion9 decks48 decks
16%synergy
Castle Locthwain
17%inclusion8 decks48 decks
-0%synergy
Mortuary Mire
15%inclusion7 decks48 decks
2%synergy
Urza's Saga
13%inclusion6 decks48 decks
4%synergy
Inkmoth Nexus
13%inclusion6 decks48 decks
12%synergy
Takenuma, Abandoned Mire
13%inclusion6 decks48 decks
-3%synergy
Minas Morgul, Dark Fortress
10%inclusion5 decks48 decks
7%synergy
Mutavault
8.3%inclusion4 decks48 decks
8%synergy
Access Tunnel
8.3%inclusion4 decks48 decks
5%synergy
Deserted Temple
6.3%inclusion3 decks48 decks
2%synergy
Lake of the Dead
6.3%inclusion3 decks48 decks
1%synergy
Strip Mine
6.3%inclusion3 decks48 decks
3%synergy
Leechridden Swamp
6.3%inclusion3 decks48 decks
4%synergy
Mana Artifacts
Sol Ring
94%inclusion45 decks48 decks
8%synergy
Arcane Signet
58%inclusion28 decks48 decks
-3%synergy
Glistening Sphere
44%inclusion21 decks48 decks
43%synergy
Staff of Compleation
23%inclusion11 decks48 decks
21%synergy
Patchwork Banner
19%inclusion9 decks47 decks
15%synergy
Thought Vessel
17%inclusion8 decks48 decks
-8%synergy
Mana Crypt
13%inclusion6 decks48 decks
12%synergy
Jeweled Lotus
10%inclusion5 decks48 decks
10%synergy
Throne of Eldraine
10%inclusion5 decks48 decks
1%synergy
Mox Amber
10%inclusion5 decks48 decks
6%synergy
Gauntlet of Power
8.3%inclusion4 decks48 decks
5%synergy
Mind Stone
8.3%inclusion4 decks48 decks
-20%synergy
Commander's Sphere
6.3%inclusion3 decks48 decks
-2%synergy
Charcoal Diamond
6.3%inclusion3 decks48 decks
-16%synergy
Mana Vault
6.3%inclusion3 decks48 decks
-0%synergy
Fellwar Stone
6.3%inclusion3 decks48 decks
-8%synergy
Nyx Lotus
6.3%inclusion3 decks48 decks
0%synergy
Extraplanar Lens
6.3%inclusion3 decks48 decks
1%synergy
Lands
Swamp
92%inclusion44 decks48 decks
-4%synergy
Cavern of Souls
60%inclusion29 decks48 decks
54%synergy
Path of Ancestry
23%inclusion11 decks48 decks
18%synergy
Command Tower
17%inclusion8 decks48 decks
11%synergy
Malakir Rebirth
17%inclusion8 decks48 decks
-7%synergy
Fell the Profane
15%inclusion7 decks48 decks
-5%synergy
Myriad Landscape
10%inclusion5 decks48 decks
-14%synergy
Verdant Catacombs
10%inclusion5 decks48 decks
7%synergy
Snow-Covered Swamp
10%inclusion5 decks48 decks
4%synergy
Marsh Flats
10%inclusion5 decks48 decks
7%synergy
Polluted Delta
10%inclusion5 decks48 decks
7%synergy
Bloodstained Mire
10%inclusion5 decks48 decks
7%synergy
Gemstone Caverns
8.3%inclusion4 decks48 decks
4%synergy
Mirrex
6.3%inclusion3 decks48 decks
6%synergy
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