Karumonix, the Rat King (Commander) - Rat Colony

Karumonix, the Rat King
Rank #407
373decks
As CommanderAs CardAverage DeckDecks
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1
23
4
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
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Rat Colony
100%inclusion373 decks373 decks
94%synergy
Marrow-Gnawer
84%inclusion315 decks373 decks
81%synergy
Piper of the Swarm
85%inclusion318 decks373 decks
79%synergy
Pack Rat
78%inclusion292 decks373 decks
72%synergy
Blightbelly Rat
73%inclusion273 decks373 decks
70%synergy
Ogre Slumlord
76%inclusion283 decks373 decks
66%synergy
Ichor Rats
65%inclusion244 decks373 decks
63%synergy
Lord Skitter, Sewer King
68%inclusion254 decks373 decks
60%synergy
Infectious Inquiry
59%inclusion220 decks373 decks
56%synergy
Vraska's Fall
58%inclusion215 decks373 decks
54%synergy
Top Cards
Jet Medallion
68%inclusion253 decks373 decks
6%synergy
Dark Ritual
65%inclusion242 decks373 decks
-2%synergy
Bontu's Monument
64%inclusion237 decks373 decks
36%synergy
Herald's Horn
53%inclusion198 decks373 decks
47%synergy
Lord Skitter's Butcher
53%inclusion196 decks373 decks
50%synergy
Typhoid Rats
52%inclusion195 decks373 decks
49%synergy
Drown in Ichor
52%inclusion194 decks373 decks
48%synergy
Crypt Rats
52%inclusion193 decks373 decks
47%synergy
Tangled Colony
50%inclusion185 decks373 decks
47%synergy
Ashcoat of the Shadow Swarm
49%inclusion183 decks373 decks
46%synergy
Game Changers
Demonic Tutor
32%inclusion120 decks373 decks
5%synergy
Vampiric Tutor
24%inclusion89 decks373 decks
3%synergy
Bolas's Citadel
19%inclusion72 decks373 decks
-9%synergy
Creatures
Septic Rats
47%inclusion176 decks373 decks
45%synergy
Rancid Rats
46%inclusion173 decks373 decks
44%synergy
Ratcatcher
45%inclusion169 decks373 decks
42%synergy
Rat King, Verminister
45%inclusion9 decks20 decks
42%synergy
Voracious Vermin
44%inclusion163 decks373 decks
41%synergy
Persistent Marshstalker
42%inclusion156 decks373 decks
39%synergy
Burglar Rat
42%inclusion155 decks373 decks
31%synergy
Gnat Miser
38%inclusion141 decks373 decks
35%synergy
Swarm of Rats
37%inclusion138 decks373 decks
35%synergy
Wave of Rats
34%inclusion127 decks373 decks
32%synergy
Stronghold Rats
34%inclusion125 decks373 decks
30%synergy
Ink-Eyes, Servant of Oni
32%inclusion119 decks373 decks
29%synergy
Chittering Skitterling
29%inclusion108 decks373 decks
28%synergy
Ayara, First of Locthwain
28%inclusion103 decks373 decks
3%synergy
Nashi, Moon Sage's Scion
27%inclusion101 decks373 decks
23%synergy
Species Specialist
25%inclusion95 decks373 decks
22%synergy
Nezumi Informant
25%inclusion95 decks373 decks
19%synergy
Pestilence Rats
25%inclusion95 decks373 decks
24%synergy
Valley Rotcaller
24%inclusion91 decks373 decks
22%synergy
Chittering Witch
24%inclusion89 decks373 decks
20%synergy
Rat King, Pale Piper
22%inclusion4 decks18 decks
18%synergy
Ruthless Radrat
22%inclusion82 decks373 decks
21%synergy
Changeling Outcast
22%inclusion82 decks373 decks
17%synergy
Old Flitterfang
21%inclusion80 decks373 decks
20%synergy
Crypt Ghast
21%inclusion79 decks373 decks
-26%synergy
Innocuous Rat
20%inclusion67 decks336 decks
19%synergy
Nezumi Prowler
20%inclusion73 decks373 decks
18%synergy
Gray Merchant of Asphodel
18%inclusion66 decks373 decks
-33%synergy
Ruin Rat
18%inclusion66 decks373 decks
16%synergy
Engine Rat
17%inclusion7 decks42 decks
15%synergy
Ravenous Rats
17%inclusion62 decks373 decks
15%synergy
Twisted Sewer-Witch
16%inclusion61 decks373 decks
15%synergy
Daggerfang Duo
16%inclusion60 decks373 decks
15%synergy
Throat Slitter
16%inclusion60 decks373 decks
14%synergy
Locust Miser
16%inclusion60 decks373 decks
15%synergy
Elephant-Rat
15%inclusion4 decks26 decks
15%synergy
Gnawing Vermin
15%inclusion56 decks373 decks
14%synergy
Nezumi Cutthroat
14%inclusion51 decks373 decks
13%synergy
Razortooth Rats
13%inclusion48 decks373 decks
12%synergy
Rotting Rats
13%inclusion47 decks373 decks
10%synergy
Drainpipe Vermin
13%inclusion47 decks373 decks
11%synergy
Relentless Rats
12%inclusion43 decks373 decks
10%synergy
Refurbished Familiar
10%inclusion38 decks373 decks
8%synergy
Roaming Throne
9.4%inclusion35 decks373 decks
6%synergy
Yawgmoth, Thran Physician
9.1%inclusion34 decks373 decks
-1%synergy
Mukotai Ambusher
8.6%inclusion32 decks373 decks
8%synergy
Adaptive Automaton
7.8%inclusion29 decks373 decks
7%synergy
Okiba-Gang Shinobi
7.8%inclusion29 decks373 decks
7%synergy
Undercity Dire Rat
7.1%inclusion2 decks28 decks
5%synergy
Arnyn, Deathbloom Botanist
7.1%inclusion1 decks14 decks
5%synergy
Instants
Whisper of the Dross
43%inclusion160 decks373 decks
40%synergy
Defile
40%inclusion149 decks373 decks
5%synergy
Village Rites
38%inclusion141 decks373 decks
12%synergy
Go for the Throat
29%inclusion110 decks373 decks
7%synergy
Rat Out
21%inclusion78 decks373 decks
20%synergy
Corrupted Conviction
21%inclusion78 decks373 decks
8%synergy
Grim Affliction
18%inclusion69 decks373 decks
17%synergy
Withering Torment
18%inclusion61 decks340 decks
-14%synergy
Deadly Rollick
17%inclusion64 decks373 decks
-8%synergy
Deadly Dispute
16%inclusion60 decks373 decks
-11%synergy
Infernal Grasp
16%inclusion60 decks373 decks
-9%synergy
Murder
14%inclusion53 decks373 decks
4%synergy
Foul-Tongue Shriek
14%inclusion51 decks373 decks
12%synergy
Consuming Corruption
12%inclusion45 decks373 decks
-3%synergy
Tragic Slip
12%inclusion45 decks373 decks
-7%synergy
Tainted Strike
12%inclusion43 decks373 decks
9%synergy
Gravepurge
10%inclusion39 decks373 decks
9%synergy
Unbury
10%inclusion2 decks21 decks
9%synergy
Bitter Triumph
9.4%inclusion35 decks373 decks
-1%synergy
Anoint with Affliction
8.8%inclusion33 decks373 decks
8%synergy
Malakir Rebirth
8.8%inclusion33 decks373 decks
-15%synergy
Doom Blade
8.6%inclusion32 decks373 decks
2%synergy
Cabal Ritual
7.2%inclusion27 decks373 decks
-12%synergy
Hero's Downfall
7.0%inclusion26 decks373 decks
0%synergy
Sudden Spoiling
6.7%inclusion25 decks373 decks
-2%synergy
Fell the Profane
6.4%inclusion24 decks373 decks
-13%synergy
Raise the Draugr
6.4%inclusion24 decks373 decks
6%synergy
Culling the Weak
6.2%inclusion23 decks373 decks
-12%synergy
Death Denied
5.6%inclusion21 decks373 decks
5%synergy
Not Dead After All
5.1%inclusion19 decks373 decks
-6%synergy
Baleful Mastery
5.1%inclusion19 decks373 decks
-3%synergy
Sorceries
Phyresis Outbreak
48%inclusion178 decks373 decks
46%synergy
Feed the Swarm
37%inclusion139 decks373 decks
-13%synergy
Patriarch's Bidding
37%inclusion138 decks373 decks
33%synergy
Revenge of the Rats
36%inclusion79 decks218 decks
33%synergy
Swarmyard Massacre
34%inclusion125 decks373 decks
31%synergy
Crippling Fear
32%inclusion119 decks373 decks
29%synergy
Kindred Dominance
29%inclusion110 decks373 decks
25%synergy
Sign in Blood
26%inclusion98 decks373 decks
-9%synergy
Echoing Return
23%inclusion86 decks373 decks
20%synergy
Vat Emergence
17%inclusion64 decks373 decks
16%synergy
Night's Whisper
16%inclusion60 decks373 decks
-9%synergy
Damnation
16%inclusion60 decks373 decks
-4%synergy
Plague of Vermin
16%inclusion59 decks373 decks
13%synergy
Diabolic Tutor
15%inclusion57 decks373 decks
2%synergy
Toxic Deluge
15%inclusion57 decks373 decks
-22%synergy
Spread the Sickness
15%inclusion55 decks373 decks
14%synergy
Diabolic Intent
14%inclusion53 decks373 decks
-1%synergy
Unearth
12%inclusion44 decks373 decks
3%synergy
Read the Bones
12%inclusion43 decks373 decks
-4%synergy
Pact of the Serpent
11%inclusion42 decks373 decks
10%synergy
Gruesome Fate
11%inclusion40 decks373 decks
9%synergy
Mutilate
10%inclusion38 decks373 decks
-5%synergy
Reanimate
10%inclusion38 decks373 decks
-31%synergy
Victimize
7.5%inclusion28 decks373 decks
-20%synergy
Caress of Phyrexia
7.5%inclusion28 decks373 decks
7%synergy
Grim Tutor
7.5%inclusion28 decks373 decks
-4%synergy
Feed the Infection
7.0%inclusion26 decks373 decks
6%synergy
Insatiable Avarice
7.0%inclusion26 decks373 decks
-4%synergy
Secret Salvage
7.0%inclusion26 decks373 decks
6%synergy
Blasphemous Edict
6.9%inclusion15 decks218 decks
-9%synergy
In Garruk's Wake
6.7%inclusion25 decks373 decks
3%synergy
Bubbling Muck
6.2%inclusion23 decks373 decks
-9%synergy
Fell
5.6%inclusion21 decks373 decks
2%synergy
Living Death
5.6%inclusion21 decks373 decks
-5%synergy
Lab Rats
5.1%inclusion19 decks373 decks
5%synergy
Utility Artifacts
Skullclamp
47%inclusion177 decks373 decks
25%synergy
Vanquisher's Banner
37%inclusion138 decks373 decks
33%synergy
Thrumming Stone
33%inclusion122 decks373 decks
29%synergy
Banner of Kinship
21%inclusion48 decks224 decks
19%synergy
Swiftfoot Boots
19%inclusion71 decks373 decks
-12%synergy
Contagion Clasp
18%inclusion69 decks373 decks
16%synergy
Lightning Greaves
18%inclusion66 decks373 decks
-16%synergy
Coat of Arms
16%inclusion61 decks373 decks
14%synergy
Whip of Erebos
15%inclusion57 decks373 decks
4%synergy
Door of Destinies
15%inclusion56 decks373 decks
13%synergy
Chronicle of Victory
14%inclusion3 decks21 decks
12%synergy
Contagion Engine
13%inclusion47 decks373 decks
11%synergy
Ashnod's Altar
10%inclusion36 decks373 decks
-10%synergy
Eldrazi Monument
7.5%inclusion28 decks373 decks
6%synergy
Icon of Ancestry
7.2%inclusion27 decks373 decks
6%synergy
Thornbite Staff
7.2%inclusion27 decks373 decks
4%synergy
The Darkness Crystal
7.1%inclusion2 decks28 decks
-13%synergy
Sword of the Squeak
6.7%inclusion25 decks373 decks
6%synergy
Wayfarer's Bauble
5.9%inclusion22 decks373 decks
-9%synergy
Enchantments
Phyrexian Arena
40%inclusion148 decks373 decks
0%synergy
Cover of Darkness
32%inclusion121 decks373 decks
29%synergy
Necrogen Communion
28%inclusion105 decks373 decks
26%synergy
Haunted One
27%inclusion100 decks373 decks
24%synergy
Bad Moon
22%inclusion83 decks373 decks
19%synergy
Grave Pact
18%inclusion68 decks373 decks
-1%synergy
Black Market Connections
17%inclusion64 decks373 decks
-8%synergy
Oversold Cemetery
17%inclusion62 decks373 decks
11%synergy
Black Market
14%inclusion53 decks373 decks
-6%synergy
Phyresis
13%inclusion48 decks373 decks
11%synergy
Vampiric Rites
11%inclusion41 decks373 decks
5%synergy
Phyrexian Reclamation
10%inclusion39 decks373 decks
1%synergy
Tribute to Horobi
8.6%inclusion32 decks373 decks
8%synergy
Dark Prophecy
8.0%inclusion30 decks373 decks
4%synergy
The Meathook Massacre
6.7%inclusion25 decks373 decks
-10%synergy
Dictate of Erebos
6.7%inclusion25 decks373 decks
-4%synergy
Lord Skitter's Blessing
5.4%inclusion20 decks373 decks
5%synergy
Planeswalkers
Vraska, Betrayal's Sting
25%inclusion94 decks373 decks
23%synergy
Liliana of the Dark Realms
12%inclusion44 decks373 decks
-2%synergy
Utility Lands
Swarmyard
60%inclusion224 decks373 decks
54%synergy
Cabal Coffers
48%inclusion178 decks373 decks
-7%synergy
Bojuka Bog
46%inclusion170 decks373 decks
-2%synergy
Karn's Bastion
43%inclusion159 decks373 decks
39%synergy
Mudflat Village
37%inclusion139 decks373 decks
35%synergy
Cabal Stronghold
34%inclusion125 decks373 decks
-1%synergy
Rogue's Passage
30%inclusion113 decks373 decks
11%synergy
Reliquary Tower
26%inclusion98 decks373 decks
-3%synergy
Witch's Cottage
26%inclusion96 decks373 decks
1%synergy
Three Tree City
25%inclusion95 decks373 decks
21%synergy
Urborg, Tomb of Yawgmoth
25%inclusion94 decks373 decks
-12%synergy
Nykthos, Shrine to Nyx
25%inclusion93 decks373 decks
-5%synergy
Mortuary Mire
17%inclusion64 decks373 decks
4%synergy
Phyrexian Tower
17%inclusion63 decks373 decks
-9%synergy
Crypt of Agadeem
13%inclusion49 decks373 decks
2%synergy
Secret Tunnel
13%inclusion3 decks24 decks
11%synergy
Castle Locthwain
12%inclusion45 decks373 decks
-5%synergy
War Room
12%inclusion44 decks373 decks
-4%synergy
Shizo, Death's Storehouse
11%inclusion40 decks373 decks
0%synergy
Access Tunnel
9.1%inclusion34 decks373 decks
6%synergy
Temple of the False God
7.2%inclusion27 decks373 decks
-0%synergy
Takenuma, Abandoned Mire
5.9%inclusion22 decks373 decks
-10%synergy
Barren Moor
5.4%inclusion20 decks373 decks
-4%synergy
Mana Artifacts
Sol Ring
77%inclusion287 decks373 decks
-8%synergy
Arcane Signet
49%inclusion181 decks373 decks
-13%synergy
Glistening Sphere
36%inclusion134 decks373 decks
35%synergy
Patchwork Banner
34%inclusion128 decks373 decks
30%synergy
Charcoal Diamond
15%inclusion56 decks373 decks
-7%synergy
Mind Stone
14%inclusion51 decks373 decks
-14%synergy
Staff of Compleation
13%inclusion50 decks373 decks
12%synergy
Thought Vessel
10%inclusion38 decks373 decks
-14%synergy
Caged Sun
9.1%inclusion34 decks373 decks
-1%synergy
Heraldic Banner
8.8%inclusion33 decks373 decks
4%synergy
White Lotus Tile
8.3%inclusion2 decks24 decks
8%synergy
Commander's Sphere
7.2%inclusion27 decks373 decks
-1%synergy
Gauntlet of Power
6.2%inclusion23 decks373 decks
3%synergy
Throne of Eldraine
6.2%inclusion23 decks373 decks
-3%synergy
Nyx Lotus
6.2%inclusion23 decks373 decks
0%synergy
Lands
Swamp
96%inclusion357 decks373 decks
0%synergy
Path of Ancestry
26%inclusion98 decks373 decks
21%synergy
Big Apple, 3 a.m.
22%inclusion4 decks18 decks
21%synergy
Cavern of Souls
21%inclusion78 decks373 decks
14%synergy
Myriad Landscape
16%inclusion60 decks373 decks
-8%synergy
Command Tower
12%inclusion44 decks373 decks
6%synergy
Malakir Rebirth
8.8%inclusion33 decks373 decks
-15%synergy
Fell the Profane
6.4%inclusion24 decks373 decks
-13%synergy
Snow-Covered Swamp
5.1%inclusion19 decks373 decks
-1%synergy
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