Karumonix, the Rat King (Commander) - Rat Colony

Karumonix, the Rat King
Rank #399
481decks
As CommanderAs CardAverage DeckDecks
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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%inclusion480 decks481 decks
94%synergy
Marrow-Gnawer
82%inclusion394 decks481 decks
78%synergy
Piper of the Swarm
84%inclusion404 decks481 decks
77%synergy
Pack Rat
78%inclusion375 decks481 decks
72%synergy
Blightbelly Rat
73%inclusion353 decks481 decks
70%synergy
Ogre Slumlord
75%inclusion361 decks481 decks
65%synergy
Ichor Rats
65%inclusion315 decks481 decks
63%synergy
Lord Skitter, Sewer King
68%inclusion328 decks481 decks
60%synergy
Infectious Inquiry
59%inclusion283 decks481 decks
56%synergy
Vraska's Fall
57%inclusion275 decks481 decks
54%synergy
Top Cards
Jet Medallion
66%inclusion317 decks481 decks
4%synergy
Bontu's Monument
63%inclusion302 decks481 decks
35%synergy
Dark Ritual
63%inclusion301 decks481 decks
-4%synergy
Herald's Horn
55%inclusion264 decks481 decks
49%synergy
Lord Skitter's Butcher
53%inclusion255 decks481 decks
50%synergy
Crypt Rats
53%inclusion255 decks481 decks
49%synergy
Typhoid Rats
53%inclusion253 decks481 decks
49%synergy
Drown in Ichor
51%inclusion246 decks481 decks
48%synergy
Tangled Colony
50%inclusion241 decks481 decks
47%synergy
Ashcoat of the Shadow Swarm
49%inclusion234 decks481 decks
45%synergy
Game Changers
Demonic Tutor
31%inclusion150 decks481 decks
4%synergy
Vampiric Tutor
24%inclusion117 decks481 decks
3%synergy
Bolas's Citadel
20%inclusion95 decks481 decks
-9%synergy
Creatures
Septic Rats
47%inclusion225 decks481 decks
45%synergy
Ratcatcher
47%inclusion224 decks481 decks
43%synergy
Rancid Rats
46%inclusion222 decks481 decks
44%synergy
Voracious Vermin
44%inclusion213 decks481 decks
41%synergy
Burglar Rat
43%inclusion205 decks481 decks
32%synergy
Rat King, Verminister
41%inclusion7 decks17 decks
38%synergy
Persistent Marshstalker
38%inclusion183 decks479 decks
35%synergy
Gnat Miser
38%inclusion182 decks481 decks
35%synergy
Swarm of Rats
37%inclusion177 decks481 decks
34%synergy
Stronghold Rats
35%inclusion168 decks481 decks
31%synergy
Wave of Rats
35%inclusion167 decks481 decks
33%synergy
Ink-Eyes, Servant of Oni
32%inclusion153 decks481 decks
29%synergy
Chittering Skitterling
30%inclusion143 decks481 decks
29%synergy
Rat King, Pale Piper
29%inclusion4 decks14 decks
25%synergy
Pestilence Rats
27%inclusion132 decks481 decks
26%synergy
Ayara, First of Locthwain
27%inclusion130 decks481 decks
2%synergy
Nashi, Moon Sage's Scion
27%inclusion129 decks481 decks
23%synergy
Nezumi Informant
26%inclusion127 decks481 decks
20%synergy
Species Specialist
26%inclusion125 decks481 decks
23%synergy
Chittering Witch
24%inclusion115 decks481 decks
20%synergy
Ruthless Radrat
23%inclusion112 decks481 decks
23%synergy
Old Flitterfang
23%inclusion110 decks481 decks
22%synergy
Changeling Outcast
22%inclusion107 decks481 decks
17%synergy
Valley Rotcaller
21%inclusion101 decks481 decks
18%synergy
Nezumi Prowler
20%inclusion97 decks481 decks
19%synergy
Innocuous Rat
20%inclusion67 decks337 decks
19%synergy
Crypt Ghast
19%inclusion92 decks481 decks
-28%synergy
Ruin Rat
18%inclusion88 decks481 decks
17%synergy
Ravenous Rats
18%inclusion87 decks481 decks
16%synergy
Gnawing Vermin
18%inclusion87 decks481 decks
17%synergy
Gray Merchant of Asphodel
17%inclusion83 decks481 decks
-33%synergy
Throat Slitter
16%inclusion79 decks481 decks
15%synergy
Locust Miser
16%inclusion79 decks481 decks
15%synergy
Twisted Sewer-Witch
16%inclusion76 decks481 decks
14%synergy
Engine Rat
15%inclusion6 decks41 decks
13%synergy
Daggerfang Duo
15%inclusion68 decks467 decks
14%synergy
Drainpipe Vermin
14%inclusion68 decks481 decks
13%synergy
Nezumi Cutthroat
14%inclusion66 decks481 decks
13%synergy
Razortooth Rats
13%inclusion62 decks481 decks
12%synergy
Relentless Rats
13%inclusion61 decks481 decks
11%synergy
Rotting Rats
12%inclusion60 decks481 decks
9%synergy
Undercity Dire Rat
11%inclusion3 decks27 decks
9%synergy
Roaming Throne
11%inclusion51 decks481 decks
8%synergy
Refurbished Familiar
10%inclusion48 decks481 decks
8%synergy
Mukotai Ambusher
10%inclusion47 decks481 decks
9%synergy
Yawgmoth, Thran Physician
8.7%inclusion42 decks481 decks
-1%synergy
Nezumi Bladeblesser
8.1%inclusion39 decks481 decks
8%synergy
Elephant-Rat
8.0%inclusion2 decks25 decks
8%synergy
Okiba-Gang Shinobi
7.9%inclusion38 decks481 decks
7%synergy
Tunnel Rats
7.7%inclusion1 decks13 decks
7%synergy
Instants
Whisper of the Dross
42%inclusion202 decks481 decks
39%synergy
Defile
39%inclusion187 decks481 decks
3%synergy
Village Rites
38%inclusion182 decks481 decks
12%synergy
Go for the Throat
30%inclusion146 decks481 decks
8%synergy
Rat Out
22%inclusion105 decks481 decks
20%synergy
Corrupted Conviction
20%inclusion97 decks481 decks
8%synergy
Grim Affliction
18%inclusion87 decks481 decks
16%synergy
Withering Torment
18%inclusion61 decks341 decks
-14%synergy
Deadly Rollick
17%inclusion80 decks481 decks
-8%synergy
Deadly Dispute
16%inclusion78 decks481 decks
-10%synergy
Infernal Grasp
16%inclusion77 decks481 decks
-9%synergy
Murder
16%inclusion75 decks481 decks
6%synergy
Foul-Tongue Shriek
13%inclusion62 decks481 decks
11%synergy
Tragic Slip
12%inclusion60 decks481 decks
-7%synergy
Tainted Strike
12%inclusion59 decks481 decks
9%synergy
Consuming Corruption
12%inclusion58 decks481 decks
-4%synergy
Bitter Triumph
11%inclusion52 decks481 decks
1%synergy
Unbury
11%inclusion2 decks19 decks
10%synergy
Gravepurge
10%inclusion47 decks481 decks
8%synergy
Anoint with Affliction
8.7%inclusion42 decks481 decks
8%synergy
Malakir Rebirth
8.3%inclusion40 decks481 decks
-15%synergy
Doom Blade
8.1%inclusion39 decks481 decks
1%synergy
Hero's Downfall
7.7%inclusion37 decks481 decks
1%synergy
Raise the Draugr
7.5%inclusion36 decks481 decks
7%synergy
Fell the Profane
7.1%inclusion34 decks481 decks
-12%synergy
Sudden Spoiling
6.7%inclusion32 decks481 decks
-2%synergy
Cabal Ritual
6.2%inclusion30 decks481 decks
-12%synergy
Death Denied
5.8%inclusion28 decks481 decks
5%synergy
Baleful Mastery
5.2%inclusion25 decks481 decks
-3%synergy
Sorceries
Phyresis Outbreak
48%inclusion230 decks481 decks
46%synergy
Feed the Swarm
37%inclusion176 decks481 decks
-14%synergy
Patriarch's Bidding
37%inclusion176 decks481 decks
33%synergy
Revenge of the Rats
35%inclusion77 decks219 decks
32%synergy
Crippling Fear
32%inclusion156 decks481 decks
30%synergy
Kindred Dominance
30%inclusion145 decks481 decks
25%synergy
Swarmyard Massacre
28%inclusion132 decks467 decks
26%synergy
Sign in Blood
27%inclusion132 decks481 decks
-8%synergy
Echoing Return
23%inclusion109 decks481 decks
20%synergy
Vat Emergence
17%inclusion80 decks481 decks
15%synergy
Night's Whisper
16%inclusion77 decks481 decks
-9%synergy
Plague of Vermin
16%inclusion76 decks481 decks
13%synergy
Diabolic Intent
15%inclusion72 decks481 decks
-0%synergy
Diabolic Tutor
15%inclusion72 decks481 decks
1%synergy
Toxic Deluge
14%inclusion68 decks481 decks
-23%synergy
Damnation
14%inclusion68 decks481 decks
-6%synergy
Spread the Sickness
14%inclusion65 decks481 decks
13%synergy
Read the Bones
13%inclusion61 decks481 decks
-4%synergy
Reanimate
10%inclusion50 decks481 decks
-30%synergy
Unearth
10%inclusion49 decks481 decks
1%synergy
Gruesome Fate
10%inclusion49 decks481 decks
8%synergy
Mutilate
10%inclusion47 decks481 decks
-6%synergy
Pact of the Serpent
10%inclusion46 decks481 decks
8%synergy
Insatiable Avarice
8.1%inclusion39 decks481 decks
-3%synergy
Grim Tutor
8.1%inclusion39 decks481 decks
-3%synergy
Caress of Phyrexia
7.5%inclusion36 decks481 decks
7%synergy
Feed the Infection
7.3%inclusion35 decks481 decks
7%synergy
Victimize
7.1%inclusion34 decks481 decks
-20%synergy
Blasphemous Edict
6.8%inclusion15 decks219 decks
-9%synergy
Secret Salvage
6.4%inclusion31 decks481 decks
5%synergy
Haunting Voyage
6.0%inclusion29 decks481 decks
5%synergy
Lab Rats
6.0%inclusion29 decks481 decks
6%synergy
Forever Young
5.8%inclusion28 decks481 decks
4%synergy
In Garruk's Wake
5.6%inclusion27 decks481 decks
2%synergy
Bubbling Muck
5.4%inclusion26 decks481 decks
-10%synergy
Bloodline Bidding
5.3%inclusion1 decks19 decks
1%synergy
Utility Artifacts
Skullclamp
46%inclusion223 decks481 decks
24%synergy
Vanquisher's Banner
38%inclusion182 decks481 decks
34%synergy
Thrumming Stone
31%inclusion147 decks481 decks
27%synergy
Banner of Kinship
22%inclusion49 decks225 decks
20%synergy
Swiftfoot Boots
18%inclusion88 decks481 decks
-13%synergy
Contagion Clasp
18%inclusion86 decks481 decks
16%synergy
Lightning Greaves
17%inclusion81 decks481 decks
-17%synergy
Door of Destinies
16%inclusion78 decks481 decks
14%synergy
Coat of Arms
16%inclusion77 decks481 decks
13%synergy
Chronicle of Victory
16%inclusion3 decks19 decks
13%synergy
Whip of Erebos
14%inclusion65 decks481 decks
3%synergy
Contagion Engine
13%inclusion62 decks481 decks
11%synergy
Gathering Stone
11%inclusion2 decks19 decks
9%synergy
Ashnod's Altar
8.5%inclusion41 decks481 decks
-11%synergy
Thornbite Staff
7.5%inclusion36 decks481 decks
5%synergy
The Darkness Crystal
7.4%inclusion2 decks27 decks
-13%synergy
Icon of Ancestry
7.3%inclusion35 decks481 decks
6%synergy
Eldrazi Monument
7.3%inclusion35 decks481 decks
6%synergy
Wayfarer's Bauble
6.0%inclusion29 decks481 decks
-9%synergy
Sword of the Squeak
5.8%inclusion27 decks467 decks
5%synergy
Enchantments
Phyrexian Arena
39%inclusion187 decks481 decks
-1%synergy
Cover of Darkness
31%inclusion150 decks481 decks
28%synergy
Necrogen Communion
27%inclusion130 decks481 decks
25%synergy
Haunted One
25%inclusion121 decks481 decks
23%synergy
Bad Moon
22%inclusion108 decks481 decks
19%synergy
Grave Pact
18%inclusion88 decks481 decks
-1%synergy
Oversold Cemetery
17%inclusion82 decks481 decks
12%synergy
Black Market Connections
16%inclusion78 decks481 decks
-8%synergy
Black Market
15%inclusion72 decks481 decks
-6%synergy
Phyresis
11%inclusion55 decks481 decks
9%synergy
Phyrexian Reclamation
10%inclusion48 decks481 decks
0%synergy
Vampiric Rites
10%inclusion48 decks481 decks
4%synergy
Tribute to Horobi
8.5%inclusion41 decks481 decks
8%synergy
Dictate of Erebos
7.5%inclusion36 decks481 decks
-4%synergy
Dark Prophecy
7.3%inclusion35 decks481 decks
3%synergy
Lord Skitter's Blessing
7.1%inclusion34 decks481 decks
6%synergy
The Meathook Massacre
6.9%inclusion33 decks481 decks
-10%synergy
Planeswalkers
Vraska, Betrayal's Sting
26%inclusion127 decks481 decks
24%synergy
Liliana of the Dark Realms
11%inclusion55 decks481 decks
-2%synergy
Utility Lands
Swarmyard
58%inclusion281 decks481 decks
53%synergy
Cabal Coffers
47%inclusion225 decks481 decks
-8%synergy
Bojuka Bog
44%inclusion214 decks481 decks
-3%synergy
Karn's Bastion
42%inclusion202 decks481 decks
38%synergy
Cabal Stronghold
35%inclusion166 decks481 decks
0%synergy
Mudflat Village
33%inclusion158 decks481 decks
30%synergy
Rogue's Passage
29%inclusion141 decks481 decks
10%synergy
Witch's Cottage
26%inclusion127 decks481 decks
2%synergy
Reliquary Tower
26%inclusion124 decks481 decks
-4%synergy
Nykthos, Shrine to Nyx
24%inclusion116 decks481 decks
-6%synergy
Urborg, Tomb of Yawgmoth
24%inclusion116 decks481 decks
-13%synergy
Three Tree City
23%inclusion111 decks481 decks
18%synergy
Mortuary Mire
19%inclusion89 decks481 decks
6%synergy
Phyrexian Tower
16%inclusion76 decks481 decks
-10%synergy
Crypt of Agadeem
11%inclusion55 decks481 decks
-0%synergy
Castle Locthwain
11%inclusion55 decks481 decks
-5%synergy
War Room
11%inclusion54 decks481 decks
-5%synergy
Shizo, Death's Storehouse
10%inclusion49 decks481 decks
-0%synergy
Access Tunnel
10%inclusion47 decks481 decks
7%synergy
Secret Tunnel
9.1%inclusion2 decks22 decks
8%synergy
Temple of the False God
7.5%inclusion36 decks481 decks
-0%synergy
Barren Moor
5.8%inclusion28 decks481 decks
-4%synergy
Minas Morgul, Dark Fortress
5.6%inclusion27 decks481 decks
3%synergy
Takenuma, Abandoned Mire
5.4%inclusion26 decks481 decks
-10%synergy
Mana Artifacts
Sol Ring
77%inclusion369 decks481 decks
-9%synergy
Arcane Signet
48%inclusion232 decks481 decks
-13%synergy
Glistening Sphere
36%inclusion171 decks481 decks
34%synergy
Patchwork Banner
29%inclusion137 decks474 decks
25%synergy
Charcoal Diamond
16%inclusion77 decks481 decks
-6%synergy
Mind Stone
14%inclusion66 decks481 decks
-15%synergy
Staff of Compleation
13%inclusion64 decks481 decks
12%synergy
Caged Sun
11%inclusion51 decks481 decks
-0%synergy
Thought Vessel
10%inclusion50 decks481 decks
-15%synergy
Heraldic Banner
10%inclusion49 decks481 decks
5%synergy
White Lotus Tile
9.1%inclusion2 decks22 decks
9%synergy
Commander's Sphere
6.7%inclusion32 decks481 decks
-1%synergy
Gauntlet of Power
6.2%inclusion30 decks481 decks
3%synergy
Throne of Eldraine
6.0%inclusion29 decks481 decks
-3%synergy
Nyx Lotus
6.0%inclusion29 decks481 decks
0%synergy
Firdoch Core
5.3%inclusion1 decks19 decks
5%synergy
Phyrexian Atlas
5.2%inclusion25 decks481 decks
5%synergy
Lands
Swamp
96%inclusion462 decks481 decks
1%synergy
Path of Ancestry
27%inclusion131 decks481 decks
22%synergy
Cavern of Souls
21%inclusion99 decks481 decks
14%synergy
Myriad Landscape
17%inclusion82 decks481 decks
-8%synergy
Big Apple, 3 a.m.
14%inclusion2 decks14 decks
12%synergy
Command Tower
12%inclusion57 decks481 decks
6%synergy
Malakir Rebirth
8.3%inclusion40 decks481 decks
-15%synergy
Fell the Profane
7.1%inclusion34 decks481 decks
-12%synergy
Evolving Wilds
5.4%inclusion26 decks481 decks
2%synergy
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