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

Karumonix, the Rat King
Rank #393
53decks
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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Rat Colony
100%inclusion53 decks53 decks
94%synergy
Marrow-Gnawer
91%inclusion48 decks53 decks
87%synergy
Piper of the Swarm
85%inclusion45 decks53 decks
78%synergy
Ashcoat of the Shadow Swarm
77%inclusion41 decks53 decks
74%synergy
Swarmyard
77%inclusion41 decks53 decks
72%synergy
Pack Rat
75%inclusion40 decks53 decks
69%synergy
Karn's Bastion
57%inclusion30 decks53 decks
53%synergy
Blightbelly Rat
53%inclusion28 decks53 decks
49%synergy
Lord Skitter, Sewer King
57%inclusion30 decks53 decks
48%synergy
Infectious Inquiry
51%inclusion27 decks53 decks
48%synergy
Top Cards
Dark Ritual
77%inclusion41 decks53 decks
11%synergy
Jet Medallion
77%inclusion41 decks53 decks
15%synergy
Bontu's Monument
68%inclusion36 decks53 decks
40%synergy
Skullclamp
60%inclusion32 decks53 decks
38%synergy
Ogre Slumlord
55%inclusion29 decks53 decks
45%synergy
Deadly Rollick
51%inclusion27 decks53 decks
26%synergy
Vraska's Fall
51%inclusion27 decks53 decks
48%synergy
Thrumming Stone
49%inclusion26 decks53 decks
45%synergy
Herald's Horn
49%inclusion26 decks53 decks
43%synergy
Crypt Rats
47%inclusion25 decks53 decks
43%synergy
Game Changers
Demonic Tutor
91%inclusion48 decks53 decks
63%synergy
Vampiric Tutor
83%inclusion44 decks53 decks
62%synergy
Imperial Seal
32%inclusion17 decks53 decks
25%synergy
Ancient Tomb
28%inclusion15 decks53 decks
17%synergy
The One Ring
26%inclusion14 decks53 decks
17%synergy
Bolas's Citadel
25%inclusion13 decks53 decks
-4%synergy
Necropotence
19%inclusion10 decks53 decks
4%synergy
Mox Diamond
15%inclusion8 decks53 decks
11%synergy
Chrome Mox
15%inclusion8 decks53 decks
9%synergy
Opposition Agent
7.5%inclusion4 decks53 decks
-2%synergy
Creatures
Ichor Rats
47%inclusion25 decks53 decks
44%synergy
Ayara, First of Locthwain
40%inclusion21 decks53 decks
14%synergy
Species Specialist
38%inclusion20 decks53 decks
34%synergy
Septic Rats
28%inclusion15 decks53 decks
26%synergy
Rancid Rats
28%inclusion15 decks53 decks
26%synergy
Yawgmoth, Thran Physician
26%inclusion14 decks53 decks
16%synergy
Burglar Rat
25%inclusion13 decks53 decks
14%synergy
Typhoid Rats
25%inclusion13 decks53 decks
21%synergy
Ink-Eyes, Servant of Oni
25%inclusion13 decks53 decks
21%synergy
Ratcatcher
25%inclusion13 decks53 decks
21%synergy
Persistent Marshstalker
23%inclusion11 decks47 decks
20%synergy
Gray Merchant of Asphodel
23%inclusion12 decks53 decks
-28%synergy
Tangled Colony
23%inclusion12 decks53 decks
20%synergy
Lord Skitter's Butcher
23%inclusion12 decks53 decks
19%synergy
Gnat Miser
23%inclusion12 decks53 decks
20%synergy
Crypt Ghast
23%inclusion12 decks53 decks
-25%synergy
Valley Rotcaller
21%inclusion10 decks47 decks
19%synergy
Filth
21%inclusion11 decks53 decks
18%synergy
Swarm of Rats
21%inclusion11 decks53 decks
18%synergy
Nashi, Moon Sage's Scion
21%inclusion11 decks53 decks
17%synergy
Locust Miser
19%inclusion10 decks53 decks
17%synergy
Stronghold Rats
19%inclusion10 decks53 decks
15%synergy
Changeling Outcast
17%inclusion9 decks53 decks
12%synergy
Roaming Throne
15%inclusion8 decks53 decks
12%synergy
Voracious Vermin
15%inclusion8 decks53 decks
12%synergy
Rev, Tithe Extractor
12%inclusion3 decks26 decks
10%synergy
Nezumi Informant
11%inclusion6 decks53 decks
5%synergy
Crashing Drawbridge
9.4%inclusion5 decks53 decks
7%synergy
Throat Slitter
9.4%inclusion5 decks53 decks
8%synergy
Chittering Skitterling
9.4%inclusion5 decks53 decks
9%synergy
Chittering Witch
9.4%inclusion5 decks53 decks
5%synergy
Wave of Rats
9.4%inclusion5 decks53 decks
8%synergy
Old Flitterfang
9.4%inclusion5 decks53 decks
8%synergy
Dauthi Voidwalker
9.4%inclusion5 decks53 decks
-6%synergy
Ruthless Radrat
7.5%inclusion4 decks53 decks
7%synergy
Sheoldred, the Apocalypse
7.5%inclusion4 decks53 decks
-7%synergy
Pestilence Rats
7.5%inclusion4 decks53 decks
6%synergy
Skithiryx, the Blight Dragon
7.5%inclusion4 decks53 decks
6%synergy
Blood Artist
5.7%inclusion3 decks53 decks
-26%synergy
Rotting Rats
5.7%inclusion3 decks53 decks
3%synergy
Infected Vermin
5.7%inclusion3 decks53 decks
5%synergy
Zodiac Rat
5.7%inclusion3 decks53 decks
5%synergy
Zulaport Cutthroat
5.7%inclusion3 decks53 decks
-18%synergy
Nezumi Cutthroat
5.7%inclusion3 decks53 decks
5%synergy
Scrib Nibblers
5.7%inclusion3 decks53 decks
5%synergy
Ruin Rat
5.7%inclusion3 decks53 decks
4%synergy
Twisted Sewer-Witch
5.7%inclusion3 decks53 decks
4%synergy
Braids, Arisen Nightmare
5.7%inclusion3 decks53 decks
-14%synergy
Innocuous Rat
5.1%inclusion2 decks39 decks
4%synergy
Instants
Village Rites
26%inclusion14 decks53 decks
1%synergy
Whisper of the Dross
25%inclusion13 decks53 decks
22%synergy
Infernal Grasp
23%inclusion12 decks53 decks
-3%synergy
Defile
21%inclusion11 decks53 decks
-15%synergy
Withering Torment
18%inclusion7 decks39 decks
-13%synergy
Go for the Throat
15%inclusion8 decks53 decks
-8%synergy
Deadly Dispute
15%inclusion8 decks53 decks
-11%synergy
Culling the Weak
15%inclusion8 decks53 decks
-2%synergy
Malakir Rebirth
15%inclusion8 decks53 decks
-8%synergy
Fell the Profane
13%inclusion7 decks53 decks
-6%synergy
Cabal Ritual
13%inclusion7 decks53 decks
-5%synergy
Tragic Slip
13%inclusion7 decks53 decks
-6%synergy
Tainted Strike
13%inclusion7 decks53 decks
10%synergy
Entomb
11%inclusion6 decks53 decks
-1%synergy
Imp's Mischief
11%inclusion6 decks53 decks
-14%synergy
Corrupted Conviction
11%inclusion6 decks53 decks
-1%synergy
Hero's Downfall
9.4%inclusion5 decks53 decks
3%synergy
Snuff Out
9.4%inclusion5 decks53 decks
-4%synergy
Anoint with Affliction
7.5%inclusion4 decks53 decks
7%synergy
Grim Affliction
7.5%inclusion4 decks53 decks
6%synergy
Doom Blade
7.5%inclusion4 decks53 decks
0%synergy
Fatal Push
5.7%inclusion3 decks53 decks
2%synergy
Sheoldred's Edict
5.7%inclusion3 decks53 decks
-9%synergy
Bitter Triumph
5.7%inclusion3 decks53 decks
-4%synergy
Foul-Tongue Shriek
5.7%inclusion3 decks53 decks
4%synergy
Baleful Mastery
5.7%inclusion3 decks53 decks
-3%synergy
Sudden Spoiling
5.7%inclusion3 decks53 decks
-3%synergy
Darkness
5.7%inclusion3 decks53 decks
-4%synergy
Sorceries
Phyresis Outbreak
42%inclusion22 decks53 decks
40%synergy
Patriarch's Bidding
40%inclusion21 decks53 decks
35%synergy
Grim Tutor
40%inclusion21 decks53 decks
28%synergy
Diabolic Intent
36%inclusion19 decks53 decks
21%synergy
Toxic Deluge
34%inclusion18 decks53 decks
-3%synergy
Reanimate
32%inclusion17 decks53 decks
-8%synergy
Kindred Dominance
32%inclusion17 decks53 decks
27%synergy
Damnation
32%inclusion17 decks53 decks
12%synergy
Drown in Ichor
32%inclusion17 decks53 decks
28%synergy
Feed the Swarm
28%inclusion15 decks53 decks
-22%synergy
Echoing Return
26%inclusion14 decks53 decks
23%synergy
Plague of Vermin
25%inclusion13 decks53 decks
22%synergy
Living Death
23%inclusion12 decks53 decks
12%synergy
Sign in Blood
21%inclusion11 decks53 decks
-14%synergy
Blasphemous Edict
20%inclusion5 decks25 decks
4%synergy
Pact of the Serpent
19%inclusion10 decks53 decks
17%synergy
Swarmyard Massacre
18%inclusion8 decks45 decks
15%synergy
Diabolic Tutor
17%inclusion9 decks53 decks
3%synergy
Revenge of the Rats
16%inclusion4 decks25 decks
13%synergy
Night's Whisper
15%inclusion8 decks53 decks
-10%synergy
Secret Salvage
15%inclusion8 decks53 decks
14%synergy
Read the Bones
13%inclusion7 decks53 decks
-3%synergy
Victimize
11%inclusion6 decks53 decks
-16%synergy
Crippling Fear
11%inclusion6 decks53 decks
8%synergy
Torment of Hailfire
9.4%inclusion5 decks53 decks
-6%synergy
Bubbling Muck
9.4%inclusion5 decks53 decks
-6%synergy
Unearth
9.4%inclusion5 decks53 decks
1%synergy
Mutilate
9.4%inclusion5 decks53 decks
-7%synergy
Caress of Phyrexia
9.4%inclusion5 decks53 decks
9%synergy
Spread the Sickness
7.5%inclusion4 decks53 decks
7%synergy
Gruesome Fate
7.5%inclusion4 decks53 decks
5%synergy
Forever Young
5.7%inclusion3 decks53 decks
4%synergy
In Garruk's Wake
5.7%inclusion3 decks53 decks
2%synergy
Insatiable Avarice
5.7%inclusion3 decks53 decks
-6%synergy
Utility Artifacts
Vanquisher's Banner
34%inclusion18 decks53 decks
30%synergy
Lightning Greaves
26%inclusion14 decks53 decks
-7%synergy
Whip of Erebos
23%inclusion12 decks53 decks
12%synergy
Coat of Arms
21%inclusion11 decks53 decks
18%synergy
Door of Destinies
19%inclusion10 decks53 decks
17%synergy
Thornbite Staff
17%inclusion9 decks53 decks
14%synergy
Phyrexian Altar
17%inclusion9 decks53 decks
3%synergy
Akroma's Memorial
17%inclusion9 decks53 decks
16%synergy
Contagion Engine
15%inclusion8 decks53 decks
13%synergy
Dolmen Gate
13%inclusion7 decks53 decks
13%synergy
Sensei's Divining Top
11%inclusion6 decks53 decks
3%synergy
Ashnod's Altar
11%inclusion6 decks53 decks
-9%synergy
Eldrazi Monument
11%inclusion6 decks53 decks
10%synergy
Swiftfoot Boots
11%inclusion6 decks53 decks
-20%synergy
Contagion Clasp
9.4%inclusion5 decks53 decks
7%synergy
Locket of Yesterdays
9.4%inclusion5 decks53 decks
9%synergy
Sword of the Squeak
8.9%inclusion4 decks45 decks
8%synergy
Banner of Kinship
7.7%inclusion2 decks26 decks
6%synergy
Mirror Box
7.5%inclusion4 decks53 decks
7%synergy
Sword of Truth and Justice
7.5%inclusion4 decks53 decks
7%synergy
Altar of the Brood
7.5%inclusion4 decks53 decks
6%synergy
Altar of Dementia
7.5%inclusion4 decks53 decks
2%synergy
Aetherflux Reservoir
7.5%inclusion4 decks53 decks
-2%synergy
Wayfarer's Bauble
5.7%inclusion3 decks53 decks
-9%synergy
Wishclaw Talisman
5.7%inclusion3 decks53 decks
-1%synergy
Sword of the Animist
5.7%inclusion3 decks53 decks
2%synergy
Grafted Exoskeleton
5.7%inclusion3 decks53 decks
5%synergy
Enchantments
Phyrexian Arena
45%inclusion24 decks53 decks
6%synergy
Cover of Darkness
43%inclusion23 decks53 decks
40%synergy
Black Market Connections
36%inclusion19 decks53 decks
12%synergy
Grave Pact
28%inclusion15 decks53 decks
9%synergy
Haunted One
21%inclusion11 decks53 decks
18%synergy
Black Market
17%inclusion9 decks53 decks
-4%synergy
The Meathook Massacre
15%inclusion8 decks53 decks
-2%synergy
Necrogen Communion
15%inclusion8 decks53 decks
13%synergy
Dictate of Erebos
15%inclusion8 decks53 decks
4%synergy
Phyrexian Reclamation
13%inclusion7 decks53 decks
3%synergy
Phyresis
11%inclusion6 decks53 decks
9%synergy
Sanguine Bond
9.4%inclusion5 decks53 decks
-2%synergy
Exquisite Blood
9.4%inclusion5 decks53 decks
-4%synergy
Oversold Cemetery
9.4%inclusion5 decks53 decks
4%synergy
Bad Moon
9.4%inclusion5 decks53 decks
6%synergy
Tribute to Horobi
7.5%inclusion4 decks53 decks
7%synergy
Contamination
5.7%inclusion3 decks53 decks
2%synergy
Planeswalkers
Vraska, Betrayal's Sting
30%inclusion16 decks53 decks
28%synergy
Liliana of the Dark Realms
13%inclusion7 decks53 decks
-1%synergy
Utility Lands
Cabal Coffers
87%inclusion46 decks53 decks
32%synergy
Urborg, Tomb of Yawgmoth
72%inclusion38 decks53 decks
34%synergy
Nykthos, Shrine to Nyx
68%inclusion36 decks53 decks
38%synergy
Bojuka Bog
57%inclusion30 decks53 decks
10%synergy
Phyrexian Tower
55%inclusion29 decks53 decks
29%synergy
Cabal Stronghold
53%inclusion28 decks53 decks
18%synergy
Three Tree City
51%inclusion24 decks47 decks
46%synergy
Reliquary Tower
49%inclusion26 decks53 decks
19%synergy
Rogue's Passage
38%inclusion20 decks53 decks
19%synergy
Shizo, Death's Storehouse
26%inclusion14 decks53 decks
16%synergy
War Room
26%inclusion14 decks53 decks
10%synergy
Witch's Cottage
25%inclusion13 decks53 decks
0%synergy
Castle Locthwain
21%inclusion11 decks53 decks
4%synergy
Mudflat Village
18%inclusion9 decks49 decks
16%synergy
Crypt of Agadeem
17%inclusion9 decks53 decks
6%synergy
Mortuary Mire
15%inclusion8 decks53 decks
2%synergy
Urza's Saga
13%inclusion7 decks53 decks
5%synergy
Inkmoth Nexus
13%inclusion7 decks53 decks
12%synergy
Takenuma, Abandoned Mire
13%inclusion7 decks53 decks
-2%synergy
Minas Morgul, Dark Fortress
11%inclusion6 decks53 decks
8%synergy
Mutavault
7.5%inclusion4 decks53 decks
7%synergy
Lake of the Dead
7.5%inclusion4 decks53 decks
2%synergy
Strip Mine
7.5%inclusion4 decks53 decks
5%synergy
Access Tunnel
7.5%inclusion4 decks53 decks
5%synergy
Leechridden Swamp
5.7%inclusion3 decks53 decks
3%synergy
Deserted Temple
5.7%inclusion3 decks53 decks
1%synergy
Mana Artifacts
Sol Ring
94%inclusion50 decks53 decks
9%synergy
Arcane Signet
60%inclusion32 decks53 decks
-1%synergy
Glistening Sphere
40%inclusion21 decks53 decks
38%synergy
Staff of Compleation
23%inclusion12 decks53 decks
21%synergy
Patchwork Banner
17%inclusion8 decks46 decks
13%synergy
Mana Crypt
17%inclusion9 decks53 decks
16%synergy
Jeweled Lotus
15%inclusion8 decks53 decks
14%synergy
Thought Vessel
15%inclusion8 decks53 decks
-10%synergy
Mox Amber
11%inclusion6 decks53 decks
7%synergy
Throne of Eldraine
9.4%inclusion5 decks53 decks
-0%synergy
Gauntlet of Power
7.5%inclusion4 decks53 decks
4%synergy
Mind Stone
7.5%inclusion4 decks53 decks
-21%synergy
Nyx Lotus
7.5%inclusion4 decks53 decks
1%synergy
Charcoal Diamond
5.7%inclusion3 decks53 decks
-16%synergy
Lotus Petal
5.7%inclusion3 decks53 decks
-2%synergy
Mana Vault
5.7%inclusion3 decks53 decks
-1%synergy
Fellwar Stone
5.7%inclusion3 decks53 decks
-8%synergy
Mox Opal
5.7%inclusion3 decks53 decks
2%synergy
Extraplanar Lens
5.7%inclusion3 decks53 decks
1%synergy
Lands
Swamp
91%inclusion48 decks53 decks
-5%synergy
Cavern of Souls
62%inclusion33 decks53 decks
55%synergy
Path of Ancestry
21%inclusion11 decks53 decks
16%synergy
Command Tower
15%inclusion8 decks53 decks
9%synergy
Malakir Rebirth
15%inclusion8 decks53 decks
-8%synergy
Fell the Profane
13%inclusion7 decks53 decks
-6%synergy
Myriad Landscape
11%inclusion6 decks53 decks
-14%synergy
Snow-Covered Swamp
11%inclusion6 decks53 decks
5%synergy
Marsh Flats
11%inclusion6 decks53 decks
8%synergy
Verdant Catacombs
11%inclusion6 decks53 decks
8%synergy
Bloodstained Mire
9.4%inclusion5 decks53 decks
6%synergy
Polluted Delta
9.4%inclusion5 decks53 decks
6%synergy
Gemstone Caverns
7.5%inclusion4 decks53 decks
3%synergy
Mirrex
5.7%inclusion3 decks53 decks
5%synergy
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